Push-pull amplifiers and phase-splitters therefor (H03F3/26)

Power amplifier of sound frequency // 2635270
FIELD: electricity.SUBSTANCE: amplifier consists of a level matching board, two or more identical output matching boards, a sound amplification module that consists of two or more identical audio frequency power amplifiers connected in parallel and made on integrated microcircuits with an input impedance (Rin) from 10 to 500 kΩ and an output peak current (Ioutmax) from 4 to 30 A, and the number of output matching boards is equal to the number of audio power amplifiers of the sound amplification module.EFFECT: increased level of the output power of the audio frequency when using a low-resistance load, with improving the quality of the audio signal and increasing the bandwidth of the audio frequency.6 dwg

Pull-push amplifier with inductive inphase decoupling // 2538320
FIELD: electricity.SUBSTANCE: invention is related to pull-push current amplifiers. The pull-push amplifier contains the first and second amplifying elements (1, 1') having a current emission electrode (2, 2'), a current collecting electrode (3, 3') and current control electrode (4, 4'). The current collecting electrodes (3, 3') are connected through the respective inductance supply coil (7, 7') with common feed voltage (V+). The current emission electrodes (2, 2') of the amplifying elements (1, 1') through the respective capacitor (8, 8') are connected to the current colleting electrode (3, 3') of the other respective amplifying element (1', 1). The current emission electrodes (2, 2') through the respective output inductance coil (10, 10') are connected to the reference potential. The inductance supply coils (7, 7') of the amplifying elements (1, 1') are coupled inductively to input inductance coils (5, 5') and output inductance coils (10, 10') of the other respective amplifying element (1', 1).EFFECT: increase of amplification factor.8 cl, 2 dwg

Quick-acting source voltage repeater // 2530263
FIELD: radio engineering, communication.SUBSTANCE: quick-acting source voltage repeater contains the first (1) input field transistor, the gate of which is connected to input (2) of the device, the sink of which is connected to the first (3) power supply bus, and the source is connected to the second (4) power supply bus through current-stabilising bipole (5) and to the output of device (6), parasitic load capacitance (7) connected as to alternating current between the output of device (6) and a common bus of power sources (8). The circuit includes additional non-inverting voltage amplifier (9), the input of which is connected to the output of device (6), and the output is connected to the source of the first (1) input field transistor through additional capacitor (10).EFFECT: enlarging the range of working frequencies of a source voltage repeater at available capacity at the output C"н", reducing the time for establishment of a transient process at pulse change of input voltage.2 cl, 6 dwg

Class av two-step amplifier // 2527185
FIELD: radio engineering, communication.SUBSTANCE: class AV two-step amplifier includes a bias voltage controller and a stabilisation module which includes two branch current meters and an adder, wherein the output of the stabilisation module is connected to the input of the bias voltage controller, and a detector of the minimum value of the sum of the branch currents, the output of which is the output of the stabilisation module.EFFECT: reduced distortions in a wide signal current range while maintaining high temperature stability and stability during possible dispersion or drift of transistor parameters.2 dwg

Buffer amplifier // 2446553
FIELD: electricity.SUBSTANCE: finally it expands the range of the device linear operation. The buffer amplifier comprises the first (1) and second (2) input transistors, bases of which are connected to an input (3) of the device, the emitter of the first (1) input transistor is connected to the base of the first (4) output transistor and the collector of the input transistor (5) of the first controlled source of current, the emitter of the second (2) input transistor is connected to the base of the second (6) output transistor and the collector of the input transistor (7) of the second source of current, besides, the emitter of the first (4) and second (6) output transistors are connected to the output (8) of the device, the first (9) source of supply voltage, to which the emitter of the input transistor (5) of the controlled source of current and the collector of the first (4) output transistor, the second (10) source of supply voltage, to which the emitter of the input transistor (7) of the second controlled source of current and the collector of the second (6) output transistor are connected. The circuit includes the first (11) and the second (12) additional transistors, bases of which are connected to the input (3) of the device, the collector of the first (11) additional transistor is connected to the base of the input transistor (5) of the first controlled source of current, and its emitter is connected to the collector of the first (1) input transistor and the first (13) additional current-stabilising dipole, the collector of the second (12) additional transistor is connected to the base of the input transistor (7) of the second controlled source of current, and its emitter is connected to the collector of the second (12) input transistor and the second (14) additional current-stabilising dipole.EFFECT: increased maximum possible current in a low-resistance load at low current values consumed by a buffer amplifier from sources of supply in a static mode.9 dwg

Complementary buffer amplifier // 2444115
FIELD: radio engineering.SUBSTANCE: complementary buffer amplifier comprises the first and second input transistors, the first and second additional transistors, the first and second output transistors, the first and second current-stabilising dipoles, the first and second additional current-stabilising dipoles, the first and second additional current mirrors.EFFECT: higher input resistance of the buffer amplifier at low-resistance load.7 dwg

Operational amplifier with low-resistance load // 2444114
FIELD: electricity.SUBSTANCE: operational amplifier with a low-resistance load comprises an input complementary differential cascade, the first and second current mirrors, the first and second additional transistors, the first and second output transistors, the first and second p-n transitions, the first and second auxiliary dipoles.EFFECT: higher amplification ratio by OA voltage using comparatively low-resistance load dipoles.7 dwg

Integral operational amplifier with current feedback // 2436224
FIELD: electricity.SUBSTANCE: operational amplifier (OA) comprises an input chain of level shift (1), the input of which is connected to a non-inverting input (2) of OA, the first output is connected to a base of the first n-p-n transistor (T) (3), and the second output - to a base of the first p-n-p T (4) and to the first output of the first current source (CS) (5), the second output of which is connected to a negative supply bus (SS) (6) and to a terminal of supply of the first current mirror (CM) (7), the input of which is connected to a collector of T (4), the emitter of which is connected to an inverting input (8) of OA and to the emitter of T (3), the collector of which is connected to the input of the second CM (9), the terminal of supply of which is connected to the bus of the positive SS (10) of OA and to the first output of the second SS (11), the second output of which is connected to the base of T (3), the first output of CM (7) is connected to the first output of CM (9) and to the first input of the buffer (12), the output of which is connected to the output (13) of OA, the second input is connected to the second output of CM (7), and the third input - to the second output of CM (9). The following components are introduced: the second n-p-n T (14), the base of which is connected to the base of T (3); the second p-n-p T (15), the base of which is connected to the base of T (4), and the emitter is connected to the emitter of T (14); the third CM (16), the supply terminal of which is connected to the SS bus (6), and the first input - to the collector of T (15); an additional buffer (17), the first input of which is connected to the first output of CM (16), and the second input is connected to the second output of CM (16); the fourth CM (18), the supply terminal of which is connected to the SS bus (10), the input is connected to the collector of T (14), the first output is connected to the first output of CM (16), and the second output is connected to the third input of the buffer (17); the third and fourth n-p-n T (19) and T (20), accordingly, emitters of which are connected to the third output of CM (16), and bases are connected to the output of the buffer (17), the collector of T (19) is connected to the input of control of CM (18), and the collector of T (20) is connected to the input of control of CM (9); the fifth and the sixth n-p-n T (21) and T (22), collectors of which are connected to the SS bus (10), bases are connected to the output of the buffer (12), and emitters are connected to the third output of CM (16); the third and the fourth p-n-p T (23) and T (24), bases of which are connected to the output of the buffer (17), the emitters are connected to the third output of CM (18), the collector of T (23) is connected to the input of control of CM (16), and the collector of T (24) - to the control input of CM (7); the fifth and the sixth p-n-p T (25) and T (26), the emitters of which are connected to the third output of CM (18), the bases are connected to the output of the buffer (12), and the collectors are connected to the bus of the negative SS (6).EFFECT: improved accuracy.7 dwg

Precision operational amplifier // 2411643
FIELD: radio engineering.SUBSTANCE: operational amplifier (OA) comprises input differential cascade (DC) (1) with the first (2) and second (3) current outputs, matched accordingly with bus of positive (4) and negative (5) sources of supply, the first (6) and second (7) input transistors (T) of buffer cascade with combined bases, the first (8) and second (9) output T of buffer cascade, combined emitters of which are connected to output (10) of OA, the first (11) current-stabilising dipole (CD), connected to emitter of T (7) and base of T (8), the second CD (12), connected to emitter of T (6) and basis of T (9). Circuit includes the first (13) and second (14) additional T, collectors of which are connected to bases T (6) and T (7), emitter T (13) is connected to the first (2) current output of DC (1), emitter T (14) is connected to the second (3) current output of DC (1), and bases of T (13) and T (14) are connected with output (10) of OA.EFFECT: reduced voltage of zero shift under conditions of spread of transistor base current amplification ratio, their temperature and radiation dependence.7 dwg

Buffer amplifier // 2409889
FIELD: radio engineering.SUBSTANCE: buffer amplifier includes the first (1) and the second (2) input transistors (T) the bases of which are connected to input (3) of the device; emitter of the first T (1) is connected to the base of the first output T (4) and collector of T (5) of the first controlled current source (CCS); emitter of the second input T (2) is connected to the base of the second output T (6) and collector of T (7) of the second CCS; at that, emitters of T (4) and T (6) are connected to output (8) of the device. To the scheme there introduced is the first T (9) and the second T (10), the bases of which are connected to output (8) of the device; collector of T (9) is connected to base of T (5) of the first CCS; emitter of T (9) is connected to collector of T (1) and to the first (11) additional current-stabilising bipole; collector of T (10) is connected to base of T (7) of the second CCS, and emitter of T (10) is connected to collector of T (2) and the second (12) additional current-stabilising bipole.EFFECT: amplification of quickly changing analogue signals as to power, in structure of input cascades of analogue microchips of various functional purpose.8 dwg

Buffer amplifier // 2401509
FIELD: radio engineering.SUBSTANCE: invention can be used as output device to amplify discontinuous analog signal power (buffer amplifier) in input stages of various-purpose analog microcircuits, for example operating amplifiers. Buffer amplifier comprises first (1) and second (2) input transistors with their bases connected to BA input (3). Transistor emitter is connected to the base of first output transistor (4) and collector of the first input transistor (5) of the first controlled power supply. Emitter of transistor (2) is connected to the base of second output transistor (6) and collector of second transistor (7) of the second controlled current source. Note here that emitters of transistors (4) and (6) are connected with DA output (8). DA circuit comprises additionally first (9) and second (10) transistors. Base of transistor (9) is connected to emitter of transistor (2), base of transistor (10) is connected to emitter of transistor (1), collector of transistor (9) is connected with base of transistor T (5) of the first controlled current source. Emitter of transistor (9) is connected with collector of transistor (1) and first (11) additional current-stabilising bipolar transistor (10) is connected to base of transistor (7) of the second controlled current source. Emitter (10) is connected with collector of transistor (2) and second additional current-stabilising bipolar transistor (12).EFFECT: expanded range of linear operation.5 dwg

Buffer amplifier with low zero-shift voltage // 2401505
FIELD: radio engineering.SUBSTANCE: invention can be used as buffer amplifier incorporated with various-purpose analog microcircuits (for example, precision transponders, communication line drivers, etc.). Buffer amplifier (BA) comprises first (1) and second (2) input transistors (T) with their bases connected to BA input (3), first (4) and second(5) output with their emitters connected to BA output (6), first (7) current-stabilising bipolar transistor (BT) connected to the base of first (4) output transistor, second (8) BT connected to the base of second (5) output transistor T. Emitter of first (1) input transistor is connected with the base of first (4) of output transistor via first (9) potential shift circuit and is connected to first (10) additional BT. Emitter of second (2) input transistor is connected with the base of second (5) output transistor via second (11) potential shift circuit and is connected to second (12) additional BT.EFFECT: lower zero-shift voltage and temperature and/or radiation dependence.4 cl, 9 dwg

Radiation resistant buffer amplifier // 2393625
FIELD: radio engineering.SUBSTANCE: radiation resistant buffer amplifier comprises the first (1) and second (2) input transistors (T), bases of which are connected to input (3) of device, and emitters are connected to bases of the first (4) and second (5) output T and through the first (6) and second (7) current-stabilising dipoles are connected to the first (8) and second (9) buses of supply sources, besides emitters of the first (4) and second (5) outout T are joined to output (10) of device. The circuit includes the first (11) and second (12) additional T, emitters of which are connected to the first (8) and second (9) buses of supply sources via the first (13) and second (14) additional current-stabilising dipoles, bases are connected to emitters of the first (1) and second (2) input T, and collectors are connected to input (3) of device.EFFECT: reduced input current and increased stability.2 cl, 10 dwg

Quick-acting buffer amplifier // 2390910
FIELD: radio engineering.SUBSTANCE: invention may be used as output device for amplification of fast-varying analogue signals by power (buffer amplifier - BA), in structure of input cascades of analogue microchips of various functional purpose, for instance operational amplifiers, drivers of communication lines. BA comprises the first n-p-n (1) and second p-n-p (2) input transistors (T), with combines bases joined to inlet (3) of BA, at the same time emitter T (1) is connected to collector of the first (4) auxiliary n-p-n T and base of the first (5) output p-n-p T, emitter T (2) is connected to collector of the second (6) auxiliary p-n-p T and base of the second (7) outlet n-p-n T, and emitters T (5) and T (7) are connected to load (8); emitter T (4) is connected to bus of the first (9) source of supply (SS) via the first additional dipole (10), and base is connected to the first (11) shift supply source (SSS), emitter T (6) is connected to bus of the second (12) SS via the second (13) additional dipole, and base T (6) is connected to SSS (14). The circuit comprises the first (15) emitter repeater (ER) of voltage at n-p-n T, besides inlet (3) of BA is connected to inlet of ER (15), and outlet of ER (15) - via the first (16) additional capacitor (C) is connected to emitter T (6); the second (17) ER to p-n-p T, besides inlet (3) of BA is connected to inlet of the second (17) ER, and outlet of ER (17) - via the second (18) additional C is connected to emitter T (4).EFFECT: improved efficiency.3 cl, 9 dwg

Two-cycle buffer amplifier // 2390909
FIELD: radio engineering.SUBSTANCE: invention may be used as buffer amplifier of analogue microchips of various functional purpose (for instance, repeaters of signals with high efficiency factor and increased loop amplification, drivers of communication lines, etc.). Two-cycle buffer amplifier (TBA) comprises input differential cascade (DC) with the first (2) and second (3) current leads. Output composite transistor (4), base (5) of which is connected to the first (2) current lead of DC (1), and emitter (6) is connected to outlet (7) of DBA. Differential circuit of potentials matching (DC) (8), having non-inverting (9) and inverting (10) inlets. Outlet inverting cascade of amplification (11), inlet of which (12) is connected to outlet (13) of DC (8), and outlet (14) is connected to outlet (7) of DBA, the first (15) current-stabilising dipole (CD) connected to the first (2) current lead of DC (1), the second CD (16). Non-inverting inlet (9) of DC (8) is connected to the second (3) current lead of DC (1), and the second CD (16), and inverting input (10) of DC is connected to outlet (7) of DBA.EFFECT: improved coefficient of amplification by voltage and reduction of transmission error.2 cl, 19 dwg

Complementary push-pull cascode differential amplifier // 2370879
FIELD: radio engineering.SUBSTANCE: invention relates to radio engineering and communication hardware, and serves to amplify analog signals. Proposed device comprises first (1) and second (2) input p-n-p common-base transistors (T) with their emitters connected, via appropriate first (3) and second (4) current stabilising dipoles (DP), to bus (5) of positive power supply (PS). It comprises also first (8) and second (9) input n-p-n common base transistors with their emitters connected, via appropriate third (10) and fourth (11) DP, with bus (12) of negative PS, first (15) output p-n-p T with emitter connected with PS bus (5) via fifth (16) DP, while its base is connected to collectors of T (2) and T (9). It includes second (17) output n-p-n T with its emitter connected with PS bus (12) via sixth DP (18) and its base connected to T base (15). Third (19) output n-p-n T has its base connected to T emitter (15). Fourth (20) output p-n-p T has its base connected with T emitter (17), and its emitter connected with that of T (19) and output (21) of CDA. Proposed circuit comprises additionally first (23) n-p-n and second (24) p-n-p additional transistors. Emitter of transistor T (23) is connected with collector T (1). Collector T (23) is connected with bases of T (1) and T (2), while base of T (23) is connected to emitter of T (15). Emitter of T (24) is connected with collector T (8). Collector T (24) is connected with integrated bases T (8) and T (9). Base T (24) is connected with emitter T (17). Note here that seventh DP (22) represents a resistor connected in between emitters T (23) and T (24).EFFECT: increased coefficient of attenuation of input in-phase signals provided for due to automatic setting of static mode without using standard sources of reference current.2 cl, 14 dwg

Two-stroke cascode differential amplifier // 2337469
FIELD: physics, radio.SUBSTANCE: cascode differential amplifier (CDA) includes first (1) and second (2) input transistors (T) with their bases connected to first (3) and second (4) static mode circuits, first (5) and second (6) current stabilising impedors connected to respective emitters T (1) and T (2) and to first (7) and second (8) CDA inputs, first (9) and second (10) output current amplifiers (CA) with their main outputs (11) and (12) connected to each other and to CDA output (13), so that CA (10) input (14) is connected to T (1) collector, while CA (9) input (15) is connected to T (2) collector. First CA (9) and second CA (10) feature additional outputs (16) and (17), additional CDA (9) output (16) is connected to T (2) emitter via first nonlinear current splitter (NCS) (18), and additional CA (10) output (17) is connected to T (1) emitter via second NCS (19).EFFECT: enhanced stability of static mode in double-stroke cascode differential amplifier.5 cl, 10 dwg

Two-cycle cascode differential amplifier // 2321161
FIELD: radio engineering and communications, possible use as device for amplification of analog signals, in the structure of analog microchips of varying functional purposes (for example, in operational amplifiers).SUBSTANCE: two-cycle cascode differential amplifier contains first and second differential cascades (1) and (6) based on n-p-n and p-n-p transistors respectively, bases of which are connected to inputs (2) and (3) of two-cycle cascode differential amplifier, and emitters are connected to collector of output transistor, of respectively first and second supplies of support current (4) and (7), which are matched, respectively, with bus (5) of negative and bus (8) of positive power supplies, bases of output p-n-p transistors (9) and (10) are combined and connected to positive supply of shifting voltage (11), bases of output n-p-n transistors (12) and 13 are combined and connected to negative shifting voltage supply (14), while emitters of transistors (9) and (10) through current-stabilizing dipoles (16) and (18) are respectively connected to bus (8) of power supply, and also to current outputs (15) and (17) of cascade (1), emitters of transistors (12) and (13) are connected respectively to first (19) and second (21) current outputs of cascade (6) and, respectively, through third (20) and fourth (22) current-stabilizing dipoles are connected to bus (5) of power supply, collectors of transistors (10) and (13) are connected to output (23) of two-cycle cascode differential amplifier. Collector of p-n-p transistor (9) is connected to base of output transistor of first (4) supporting current supply, and collector of first n-p-n transistor (12) is connected to base of output transistor of second supporting current supply (7).EFFECT: increased coefficient of weakening of input cophased signals.5 dwg

Balanced differential amplifier // 2319289
FIELD: radio engineering and communications, possible use as device for amplification of difference of two signals in structure of analog microchips of various functional purposes (for example, operational amplifiers, comparators).SUBSTANCE: balanced differential amplifier contains first (1) and second (5) input parallel-balanced cascades on n-p-n (2) and (3), p-n-p (6) and (7) transistors, and first (4) and second (8) current-stabilizing dipoles in their common emitter circuit, where cophased inputs of first (1) and second (5) parallel-balanced cascades are connected to each other and are inputs (9) and (10) of balanced differential amplifier, output (11) is connected to first input (12) of output cascade (13), output (15) is connected to input (16) of output cascade (13). Output (11) is connected to first input (12) of output cascade (13) through first additional non-inverting current amplifier (18), second contact of second current-stabilizing dipole (8) is connected to input (12) of output cascade (13), output (15) is connected to input (16) of output cascade (13) through second additional non-inverting current amplifier (19), and second contact of first current-stabilizing dipole (4) is connected to input (16) of output cascade (13).EFFECT: increased weakening coefficient of input cophased signals.4 cl, 7 dwg

Sectionalized current amplifier // 2318292
FIELD: radio engineering, applicable in high-gain audio-frequency amplifiers.SUBSTANCE: use is made of three push-pull emitter followers with a circuit of successive control of each other and local interpenetrating negative feedback of a different band and power. The amplifier consists of structure-uniform mutually-supplementing push-pull sections which form the local successive negative feedback and operate in harmony for a common load. It may be any quantity of sections depending on the requirements of the development engineer, but the optimal number is four. It is this modification that is given in the claim.EFFECT: obtained the maximum high amplifier linearity coefficient at a low no-load current and maximum damping coefficient.1 dwg

Two-cycle amplifier // 2316891
FIELD: radio engineering, possible use in sound frequency power amplifiers.SUBSTANCE: two-cycle amplifier makes it possible to achieve high linearity at low saturation voltage due to "short" chain of signal passage with low phase delay in working range of frequencies. In suggested circuit currents of all cascades are limited, resulting in increased reliability of amplifier during overload.EFFECT: invention ensures high qualitative parameters of amplifier when used in output two-cycle cascade of field MDS transistors of same conductivity.1 dwg

Output cascade of power amplifier // 2313899
FIELD: radio engineering and communications, possible use as output buffer device for amplifying quickly changing analog signals power-wise, in structure of output cascades of analog microchips of various functional purposes, for example, in operational amplifiers.SUBSTANCE: output cascade of power amplifier contains output transistors (1,2) of different conductivity type with combined collectors, which are connected to load (3), supply of supporting current (4), current repeater (5), output of which (6) is combined with base of output transistor (1) and auxiliary load (7), coupled in parallel to emitter-base transition of output transistor (1), where input (8) of current repeater (5) is connected to collector of first input transistor (9), and base of input transistor (9) is connected to base of output transistor (2). Introduced into circuit are first (10) and second (11) additional transistors of different types of conductivity, emitters of which are connected to each other and connected to supply of supporting current (4), where base of transistor (10) is connected to source of shifting voltage (12), and base of transistor (11) is connected to base (13) of transistor (9).EFFECT: increased symmetry of positive and negative values of output current.3 cl, 7 dwg

Output cascade of operational amplifier // 2311729
FIELD: structure of analog microchips of varying functional purpose.SUBSTANCE: output cascade of operational amplifier, containing input p-n-p (1) and n-p-n (2) transistors, bases of which are connected to each other, emitters are connected to first (3) and second (4) current sources and bases of output n-p-n (5) and p-n-p (6) transistors, where emitters of output (5) and (6) transistors are connected to load (7), which is different because circuit additionally contains first (8) p-n-p transistor based and second (9) n-p-n transistor based current mirrors, collector of output transistor (5) is connected to collector output of first current mirror (8), collector of output transistor (6) is connected to collector output of second current mirror (9), where aforementioned output transistors (5) and (6) are connected via corresponding first (8) and second (9) current mirrors to power buses, input (10) of first current mirror (8) is connected to output of first source of support current (11), and input (12) of second current mirror (9) is connected to output of second source of support current (13).EFFECT: ensured load current protection.10 cl, 12 dwg

Rapid action operational amplifier // 2307457
FIELD: radio engineering and communications, possible use as device for amplifying impulse signals in structure of analog interfaces of varying functional purpose.SUBSTANCE: operational amplifier (dwg.2) contains input cascade (1) with expanded range of active operation, having first output (2), synchronized with bus of positive power source (4), second output (5), synchronized with bus of negative power source (6), two-clock output cascade (7), having first input (8), synchronized with bus of positive power source (4), second input (9), synchronized with bus of negative power supply (6). First output (2) of input cascade (1) is connected to collector output of first additional current mirror (10), emitter output of which is connected to first input (8) of two-clock output cascade (7), second output (5) of input cascade (1) is connected to collector output of second additional current mirror (11), emitter output of which is connected to second input (9) of two-clock output cascade (7), while input (12) of first current mirror (10) is connected to first support current supply (13), and input (14) of second current mirror (11) is connected to second support current supply (15).EFFECT: increased reliability of operation with preserved maximal possible speed of operation for linear operation modes.2 cl, 9 dwg

Output cascade for rapid action operational amplifier // 2307456
FIELD: radio engineering and communications for usage as output device for amplification of analog signals power (buffer amplifier).SUBSTANCE: output cascade (dwg. 2) contains first n-p-n (1) and second p-n-p (2) input transistors with combined bases, while emitter of first input n-p-n (1) transistor is connected to collector output of first current mirror (3) and to base of first output p-n-p transistor (4), emitter of second input p-n-p transistor (2) is connected to collector output of second current mirror (5) and to base of second output n-p-n transistor (6), and emitters of first (4) and second (6) output transistors are connected to load (7). Additionally introduced are first p-n-p (8) and second n-p-n (9) auxiliary transistors, while emitter of first auxiliary p-n-p transistor (8) is connected to additional support current supply (11), its base is connected to emitter of second (2) input p-n-p transistor, and collector - to input of first current mirror (3), emitter of first auxiliary n-p-n transistor (9) is connected to second correcting capacitor (12) and to second additional support current supply (13), and collector is connected to input of first current mirror (5).EFFECT: increased speed of operation.2 cl, 7 dwg

Output cascade of operational amplifier // 2307455
FIELD: radio engineering and communications, for usage as output device (buffer amplifier) for amplification of analog signals in structure of analog microchips of various functional purpose.SUBSTANCE: output cascade of operational amplifier contains input p-n-p (1) and n-p-n (2) transistors, bases of which are connected to each other, emitters are connected to first (3) and second (4) current sources and bases of output n-p-n (5) and p-n-p (6) transistors, while emitters of output n-p-n (5) and p-n-p (6) transistors are connected to load (7), and their collectors are connected to corresponding power buses (8) and (9). Emitters of output n-p-n (5) and p-n-p (6) transistors are connected to load (7) through first (10) and second (11) current mirrors, controlling current inputs of which (12) and (13) are connected to outputs of first (14) and second (15) sources of supporting current.EFFECT: limitation of output current on achievement of given current, value of which may be set by change of certain supporting current.6 cl, 11 dwg

High efficiency amplifier // 2307454
FIELD: radio engineering, possible use in sound frequency amplifiers.SUBSTANCE: in the amplifier, two linear channels are working for the load. First channel works directly for the load and has high speed of output signal growth and wide frequency band. Second, low frequency, channel, is controlled by first channel and has "floating" power from two key channels. Second channel consists of control circuit and output cascade. Therefore, when signals with steep front or "sinks" on load are received at input of signals amplifier, i.e. in zone where key channels are not fast enough to track the signal, current load is taken by first channel. And with low frequency signal current load is tracked by second channel, which has low tracking power from key channels. Non-suppressed interferences from impulse power of output cascade are additionally suppressed by first channel, improving quality of output signal. In working mode the current of the first channel is low and mainly output cascade current passes through the load, wherein dispersed heat power is sharply decreased due to tracking power, resulting in high efficiency.EFFECT: increased efficiency with preserved high qualitative parameters of output signal.1 dwg

Push-pull power amplifier // 2298282
FIELD: radio engineering for use as an output stage of high-precision (linearity) amplifiers.SUBSTANCE: the amplifier (Fig.5) is made in the form of series-connected stages with a common emitter icing transistors (VT2, VT3, VT4, VT5) and resistors (R1, R2, R3, R4, swinged by the source of the signal current on transistor (VT1), whose collector includes the bias voltage source (U bias) and the dynamic load-current generator (I0). Diodes (VD1, VD2) provide for switching of arms, and the current sources (I1, I2) - prevent a cut-off of the arms currents at amplifier operation in condition AB.EFFECT: reduced switching distortions arising at a change-over of the amplifier arms.3 cl, 9 dwg

Integral voltage repeater // 2289199
FIELD: electronics; voltage repeaters for current amplifying and converting impedance in chains of electronic device, implemented using integral technology.SUBSTANCE: device (pic.1) consist of first-third n-p-n transistor (T) (1,4,12), first-third p-n-p T (2,5,10), resistors (R) (9,11,13), collector burdens (14,15). Increased performance is the result of increased rate of rise because of decreased time constants of chains of spurious capacitance charge due to introduced T (10) and T (12), inserted in common base circuit and ensuring its current rating mode P (9,11,13). Increased accuracy is the result of decreased bias due to the smoothing of collector-emitter voltage of input T (1,2) and output T (4,5) because of introduced T (10,12), P (9,11,13), collector burdens (14,15), and also chain of current mode setting (16).EFFECT: increased performance and accuracy.2 dwg

Power amplifier with protection // 2286004
FIELD: radio engineering for use in transistor amplifying devices.SUBSTANCE: amplifier contains two identical amplifier channels 1,2, each consisting of input 3, intermediate 4, pre-end 5 and end 6 cascades, check connection circuits 7, circuit for protection from overload during enabling 8. introduced into end cascades 6 are "volt adding" circuits 16, connected through bidirectional electronic key 15, controlling input of which through serially connected threshold device 14 and rectifier 13 is connected to output of adder 12 of signals, inputs of which through filters of upper frequencies 10,11 are connected to outputs of amplification channels.EFFECT: increased efficiency and protection from penetration of through current in end cascade in mode of limiting output signal.1 dwg

Power amplifier output stage // 2275736
FIELD: radio and communications engineering.SUBSTANCE: proposed output stage that can be used in broadband and pulsed signal amplifying devices incorporated in multipurpose analog interface structures and voltage regulators at low supply voltages has main input 1 coupled with base of input transistor 3 whose emitter is connected on ac end to bus of power supply 4 and collector, to base of first output transistor 5; it also has second output transistor 6 whose conductivity is same as that of input transistor 3 and reverse to that of first output transistor 5; collector of second output transistor 6 is connected to emitter of first output transistor 5 and to main output 2, its emitter is connected on ac end to bus of power supply 4. Collector of first output transistor 6 is connected to bus of power supply 4 and main input 1 is coupled with base of second output transistor 6 which enhances maximal output voltage by approximately 0.7 V.EFFECT: enhanced output voltage maximum.3 cl, 16 dwg

ethod for regulating voltage across drain-source electrodes of output-stage transistors in broadband power amplifier and output stage implementing it // 2261526
FIELD: broadband power amplifiers.SUBSTANCE: proposed method for regulating output voltage across drain-source electrodes of output-stage transistors incorporated in broadband power amplifier operating in B mode using complementary transistors connected in common-drain circuit includes maintenance of stable voltage across transistor drain relative to its source that reduces impact of complex dynamic load, as well as connection of transistor drains in stage side through current supply on current-setting resistor thereby affording dispersion of drain-source capacity of first cut-off transistor through current-setting resistor by second-follower current.EFFECT: reduced nonlinear distortions.2 cl, 1 dwg

Differential amplifier // 2255417
FIELD: radio engineering; high-linearity voltage-current converters designed for active operation in wide range.SUBSTANCE: proposed differential amplifier is designed for operation in miscellaneous analog integrated circuits (for instance, in high-speed operational amplifiers, analog signal multipliers, and the like), within a wide range of 50 to 60 mV up to units of Volts in nonlinear modes limited by final speed of differential amplifier. Speed of the latter rises due to dynamic growth of recharge currents through correcting capacitor at maximal rate of output voltage rise comparable with its speed in linear modes. Differential amplifier has input transistors 1, 3, reference current supplies 2, 4, auxiliary resistor 5 inserted between emitters of transistors 1, 3, and load circuit connected to collectors of transistors 1, 3. Newly introduced are transistors 8, 9 of different structure whose emitters are connected through additional resistors 10, 11 to emitters of transistors 3 and 1, respectively. Bases of transistors 8, 9 are connected to those of transistors 3, 1, respectively.EFFECT: enlarged active operating range of differential amplifier.4 cl, 5 dwg

The alternator // 2235415
The invention relates to a measuring technique for dignostic and control of electrical quantities

The amplifier circuit radio circuit of the radio frequency mixer and containing radio // 2217862
The invention relates to a structure oriented on the radio, in particular, to the structure of the CMOS circuits for digital radio transceiver

Push-pull operational amplifier // 2193273
The invention relates to electronic devices, in particular to amplifiers, and can be used to build integrated circuits

Dual channel class-d amplifier // 2188498
The invention relates to the field of amplifier and generator technology and can be used in wideband transmission paths of the audio range of frequencies for broadcasting and communication zvukoprovodnost

Low-noise broadband amplifier dc oleksenko, kolesnikova // 2178235
The invention relates to electronics, instrumentation, automation, in particular for low-noise precision amplifier current in the integrated design, and can be used in the preliminary stages of devices linear current amplification

Low-noise broadband amplifier dc // 2176850
The invention relates to electronics, instrumentation, automation and can be used in the preliminary stages of devices linear current amplification

High frequency broadband push-pull power amplifier // 2157585
The invention relates to electrical engineering and can be used in high-frequency broadband push-pull power amplifiers included in a transmitting devices

A device for converting pulses // 2123759
The invention relates to a pulse technique, and more particularly to devices for converting pulses with reduced steepness of the front, and can be used to reduce distortion of the pulses while maintaining high conversion efficiency voltage current, as well as to reduce the DC component of the current output device

Push-pull current amplifier // 2115225
The invention relates to electronics and can be used as a powerful output stage in the composition of the low frequency amplifier, DC, video amplifier, various transducers, measurement equipment, output or grooms cascades transmitting devices in the range up to 10 MHz

The power amplifier audio frequency // 2115224
The invention relates to electronics, and more specifically to amplifiers audio-frequency

Two-stroke key amplification cascade // 2097907
The invention relates to electrical engineering and can be used in the Converter equipment

The output of the amplifier // 2094942
The invention relates to analog computing, and may find application in discrete-analog signal converters, the readers of the output signals of integrated circuits with charging connection, and broadband devices power amplification

Push-pull current amplifier // 2060579
The invention relates to electrical engineering and can be used in analog integrated amplifier devices, in particular in low-voltage push-pull power amplifiers in integrated circuits

Power amplifier // 2017324
The invention relates to electrical engineering and can be used to create cost-effective electronic amplifying devices
 
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