Automatic illumination device for tripping operation
A lighting and automatic technology, applied in the direction of lighting devices, lighting and heating equipment, parts of lighting devices, etc., can solve inconvenience and other problems, and achieve the effects of energy saving, small size, simple and practical circuit structure
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
Method used
Image
Examples
Embodiment Construction
[0011] figure 1 It is the circuit schematic diagram of the present invention, the power supply of the illuminating lamp L is provided by the primary stage of the switch QF, R1, D, C provide the trigger current for the thyristor VT, DZ can limit the voltage of the trigger terminal of the thyristor VT, and has a certain effect on the thyristor VT Protective function, the LED D is also used as a power indicator light. When the switch is turned on normally, the secondary of the switch supplies power to the LED in the optocoupler IC through the current limiting resistor R2 to make it glow, and the triode inside the optocoupler is turned on. Through the switch K, the trigger current of the thyristor is discharged, the thyristor is cut off, and the lighting lamp does not emit light. When the secondary of the switch loses the electrical signal due to tripping, the light-emitting diode in the optocoupler does not emit light due to power loss, and the internal triode At the end, the thy...
PUM
Login to View More Abstract
Description
Claims
Application Information
Login to View More 