Hi everyone ;

I've been working on a dimmer circuit in order to use / dim an incandescent lamp . I'm using the same exact Triac Driver circuit below .. And here is my problem ,

When I power up my circuit the lamp is triggered transiently , for a very short time ... (Like a flash effect) .. How can I prevent this happening to the lamp ?

This happens when I only power up the TRIAC side of the circuit .. So it doesn't have anything to do with PIC MCU ...

Any suggestions ?



http://i.stack.imgur.com/puXQb.png