Adjustable lighting device

 

(57) Abstract:

Usage: lighting apparatus and installations as a switch with a smooth change in the luminous flux. The inventive adjustable lighting device comprises an incandescent lamp, placed in the AC current through the filter against radio interference and triac controlled through mostowy rectifier from the energy of the capacitor connected to the input of the bridge rectifier and the cathode of the triac, a current limiting resistor connected to the anode of the triac. Introduced forcing the capacitor in parallel to the bounding resistor, and combined with a variable resistor switch that lets you use the device as a switch with the possibility of increasing the service life of incandescent lamps due to eliminating current surges during switching and smooth change of the light flux at the elimination of hysteresis. 1 Il.

The invention relates to electrical engineering and can be used in lighting devices and installations as a switch with a smooth change in the luminous flux.

Known adjustable lighting device [1] contains the bulb, one turn is the Torah of different conductivity, the base of each of which is connected to the collector of the other transistor, a voltage divider connected to the output diagonal of the rectifier, and the average output of the voltage divider is connected to the base of transistor p-n-p-conductivity.

The disadvantages of this device are large dimensions due to the use of powerful rectifying diodes, the use of a complicated circuit on-off incandescent bulbs.

Closest to the invention is adjustable lighting device [2] contains the bulb, one output connected with the first output for the network connection, and a second output for connection to the network is connected to the cathode of the triac, the anode is connected through a filter to a different conclusion incandescent lamp, a current limiting resistor connected to one of the conclusions from the anode of the triac, the first storage capacitor connected to the first output to the cathode of the triac, single-phase bridge rectifier, one of the input output of which is connected to a control electrode of the triac, variable resistor, the threshold element included in the diagonal of the bridge rectifier.

The disadvantages of this device are the hysteresis, the use of more than monlevade.

The purpose of the invention improve the reliability of the device.

The goal is achieved that the device was introduced forcing a capacitor connected in parallel bounding resistor, switch, combined with a variable resistor and connected between the other output limiting resistor and the second output of the first storage capacitor connected to the other input the output of the rectifier, the second storage capacitor and a thyristor connected to the output diagonal of the rectifier, the first output of the variable resistor is connected to the anode of the thyristor, and the second with the emitter of the transistor p-n-p-type conductivity and a second storage capacitor with the cathode of the thyristor, a control electrode which is connected to the emitter of the transistor n-p-n conductivity.

Elimination of hysteresis, increasing reliability while reducing the size of the device for the control of lighting is achieved by introducing a forcing of the capacitor, a low power switch, combined with a variable resistor that allows very controlled lighting ustroystv to smoothly change the brightness to maximum and turn off when the minimum brightness value.

Bulb 1 bulb is designed to create the necessary lighting. The first 2 and second 3 conclusions for network connectivity required to connect to the mains supply. Triac 4 is designed for switching incandescent lamps. Filter 5 performs the suppression of radio interference. A current limiting resistor 6 limits the supply voltage. Storage capacitor 7 is designed for accumulation of energy required for firing the triac 4. Bridge rectifier 8 rectifies the alternating voltage. Variable resistor 9 determines the angle regulation unlock. The transistors 10 and 11 define the threshold for firing of the thyristor 16. The divider 12 voltage determines the threshold of the thyristor 16. Forcing the capacitor 13 accelerates the time of the charge storage capacitor 7. The switch 14 is structurally designed in conjunction with the variable resistor 9 and is required for on-off device. Storage capacitor 15 is designed to accumulate the energy required for firing of the thyristor 16. The thyristor 16 switches the triac 4.

Adjustable lighting device operates as follows.

When enabled, the adjustable lighting device the resistance of the variable resistor 9 is increased, the charging time of the second storage capacitor 15 increases, the lamp 1 bulb glows in accordance with the position of the slider of the variable resistor 9 and after the switch 14, the lamp goes out after a power management scheme similarissue switch, that increases the service life of incandescent lamps due to eliminating current surges during switching, as well as establishing the intensity of the light flux to the required size.

Adjustable lighting device developed at the Gusev plant lighting fixtures and in particular the implementation contains the following items: lamp, incandescent 300 watt, leads for network connectivity, triac COG, the filter capacitor 0,047 µf, 300, inductor, resistor 150 kω, 0.5 W, condenser 0,047 µf, 63 V, bridgeable four rectifier diode KDA forcing the capacitor 0.1 μf, 300, switch, combined with a variable resistor SP3-4 150 ohms, the voltage divider of two resistors 7.5 kω, 0.25 W, the thyristor KUA, storage capacitor 0,047 µf, 63 V, the transistor CTE and the transistor CTE.

ADJUSTABLE LIGHTING DEVICE containing an incandescent lamp, one output connected to the first output for the network connection, the second output line is connected to the cathode of the triac, the anode is connected through a filter to the second output of the incandescent lamp, a current limiting resistor connected to one of the conclusions from the anode of the triac, the first storage capacitor, Saedinenie with a control electrode of the triac, variable resistors, two transistors of different conductivity, the base of each of which is connected to the collector of the other transistor, a voltage divider connected to the output diagonal of the rectifier, the average output of the voltage divider is connected to the base of transistor p-n-p-conductivity, characterized in that it introduced forcing a capacitor connected in parallel bounding resistor, switch, combined with a variable resistor and connected between the other output limiting resistor and the second output of the first storage capacitor connected to the other input the output of the rectifier, the second storage capacitor and a thyristor connected to the output diagonal of the rectifier, the first output of the variable resistor is connected to the anode of the thyristor, and the second with the emitter of the transistor p-n-p-type conductivity and a second storage capacitor with the cathode of the thyristor, the control electrode of which is connected to the emitter of transistor p-n-p-conductivity.

 

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