SU1368824A1 - Device for automatic check and replacement of lamp filament - Google Patents

Abstract

This invention relates to instrumentation technology. The device for automatic control and change of the burnt filament of the lamp contains diodes 1, 13-15, thyristor 2, threads 3, 4 of the glow of the test object 19, terminals 5, 6 for connecting an alternating voltage source, resistors 7, 9, 10, 18, the actuator 8, capacitors 11, 12, the LED 16, the photo thyristor 17 of the thyristor optocoupler. The device reduces the level of interference by connecting the backup filament at the zero phase of the supply voltage and improves the performance by reducing the loss of energy dissipated by the resistors. 1 il.

Description

with

05 00 00 ND 4

 13688242

The invention relates to the control circuit: terminal 6, thread 3, resistor 10, but the measuring technique and can be a diode 15, a capacitor 12, terminal 5

Used for monitoring and changing burnt out lamps or filaments of a single lamp.

The aim of the invention is to reduce the level of interference by connecting the backup filament at the zero phase of the supply voltage and improving performance by reducing the loss of energy dissipated by resistors (increasing efficiency).

The drawing shows the circuit diagram of the proposed 15 photo-thyristor 17 and resistor 9. In-device, the thyristor 2 is positive

The device contains a diode 1 and a type of half-cycle of the supply voltage of the switch 2, which cannot be connected in series, and the thread 4 is not excited from the first 3 and the second 4 threads of filament are given. When the filament 3 of the monitoring component is respectively broken between the 2A capacitor 12, it cannot charge, the first 5 and the second 6 terminals for connecting an alternating voltage source, the first resistor 7, the first terminal of which is connected to the control electrode of the thyristor 2, is an executive (signal) the body 8 connected in parallel to the filament 4, the second 9 and the third 10 resistors, capacitors 11 and 12, diodes 13-15, LED 16 and

The diode 16 is not energized and the photo thyristor 17 is not turned on. The capacitor 11 in the negative half-period of the voltage after the transition of the voltage 25 through the amplitude value starts to discharge along the circuit: the bottom plate of the capacitor 11, the resistor 7, the control transition of the thyristor 2, the thread 4, the resistor 9, the top plate of the thermometer 17 of the thyristor optron, capacitor 11. As a result, in the fourth resistor 18, the object 19 of the control (lamp).

A diode 13 is connected in series with a resistor 9 between terminals 6 and 5, the connection point of diode 13 and resistor 9 is connected via capacitor 11 to a second terminal of resistor 7 connected to terminal 5 via diode 14, which is bridged by photo-thyristor 17. Condenser 12 is connected in parallel to diode 1 through serial diode 15 and resistor 10 are connected, and LED 16 is parallel to capacitor 12 through resistor 18. In this case, diode 1, thyristor 2 and photo thyristor 17 are connected in one, and diodes 13-15 and LED 16 in the opposite direction relative to the power supply for example zheniyu.

The device works as follows.

When alternating voltage is applied to terminals 5 and 6 to connect an alternating voltage source in the positive half-period, through the thread 3 and diode 1 a rectified (one-half-period) current flows, and the lamp 19 periodically lights up. In the negative half period or good thread 3 by

35

40

45

50

55

The solid half-period of the supply voltage after its transition through the zero value turns on the thyristor 2, connects the filament 4 to the terminals 6 and 5, and the lamp 19 continues to periodically slow down. In this case, the executive (signaling) body 8 is activated.

Thus, when the first filament 3 is blown, the second filament 4 is instantly automatically excited and the lamp 19 continues to glow.

Claims (1)

Invention Formula A device for automatic control and change of a burnt lamp filament, containing a first diode, a thyristor, three resistors, terminals for connecting an alternating voltage source, an actuator, terminals for connecting a test object, the first of which is connected to the first terminal for connecting an alternating voltage source and with the anode of the thyristor, the second with the cathode of the thyristor and with the first output of the actuator, the second output of which is connected to the second terminal for connecting the source of The capacitor 12 is charged, and the circuit: terminal 6, diode 13, capacitor 11, diode 14, terminal 5 - capacitor 11. In this case, the discharge circuit of the capacitor 12 is chosen such that the LED is excited in the positive half-period of the supply voltage 16. Due to this, in the positive half-period of the supply voltage, the full discharge of the capacitor 11 is provided through The diode 16 is not energized and the photo thyristor 17 is not turned on. The capacitor 11 in the negative half-period of the voltage after the transition of the voltage 25 through the amplitude value starts to discharge in the circuit: the bottom plate of the capacitor 11, the resistor 7, the control transition of the thyristor 2, the thread 4, the resistor 9, the top plate of the end 5 0 five 0 five The solid half-period of the supply voltage after its transition through the zero value turns on the thyristor 2, connects the filament 4 to the terminals 6 and 5, and the lamp 19 continues to periodically slow down. In this case, the executive (signaling) body 8 is activated. Thus, when the first filament 3 is blown, the second filament 4 is instantly automatically excited and the lamp 19 continues to glow. Invention Formula A device for automatic control and change of a burnt lamp filament, containing a first diode, a thyristor, three resistors, terminals for connecting an alternating voltage source, an actuator, terminals for connecting a test object, the first of which is connected to the first terminal for connecting an alternating voltage source and with the anode of the thyristor, the second with the cathode of the thyristor and with the first output of the actuator, the second output of which is connected to the second terminal for connecting the source of j1368824 the voltage of the control object, with the thyristor cathode connected through the first house of the second diode and the second terminal of the resistor to the cathode of the first diode, to connect the source of the variable-anode of the second diode the purpose of reducing the level of interference and is connected to the fourth terminal to increase performance, the first and second capacitors are inserted into the non-switches of the test object and the first and second capacitors are connected to the first, the second, third and fourth diodes are a cathode optocoupler and a fourth resistive third diode are connected to the cathode, the anode of which is a connector, the first output of which is through the lightning to the second output of the fourth thyristor optocoupler, and a second resistor, the first output of the second capacitor connected to the cathode of the first connected to the second terminal for the sub-diode, the second output to the second output of the AC source 15Dom of the second resistor and to the anode of the quadruple, the anode of the first diode of the connected diode, the cathode of which is connected to the first output wto th rezis-yen to the anode of the thyristor, fototi- torus anode to the cathode fototiristory Tiris variable resistor thyristor optocoupler connected iterated photocoupler, a third klemmoys cathode of the first diode.