Hello !
I build this Transistor-triggered photogate circuit from a website and it doesn't seem to work. When the light between the emitter and detector diodes is interrupted it should trigger the SCR and a turn on a led, can someone tell me where to connect a light led in order to test it ?
http://hiviz.com/tools/triggers/triggers3.htm
PLEASE i need first the modified schematic posted here and after maybe some explications, and be sure about it .
I build this Transistor-triggered photogate circuit from a website and it doesn't seem to work. When the light between the emitter and detector diodes is interrupted it should trigger the SCR and a turn on a led, can someone tell me where to connect a light led in order to test it ?
http://hiviz.com/tools/triggers/triggers3.htm
PLEASE i need first the modified schematic posted here and after maybe some explications, and be sure about it .