Light interruption detector


Posted on Nov 25, 2012

When the light incident on the LASCR is interrupted, the voltage at the anode to the 2N4990 unilateral switch goes positive on the next positive cycle of the power which in turn triggers the switch and the C230 SCR when the switching voltage of the unilateral switch is reached


Light interruption detector
Click here to download the full size of the above Circuit.

This will cause the load to be energized for as long as light is not incident on the LASCR.




Leave Comment

characters left:

New Circuits

.

 


Popular Circuits

What should I take in account when using a more powerful triac
Power Supply Control Circuit
Light circuit diagram: 0-300V Variable High Voltage Power Supply
Simple Audio Amplifier Circuit Using LM386 PCB
automatic dual output display circuit diagram
Process-Control
Salt bath resistance furnace temperature control circuit
Basic circuit diagram connection of signal and power ISOll3
Digital pressure measuring circuit



Top