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I need help with my project. I can't make it work on my breadboard and my supervisor ask me to use a battery instead of power supply to test it and using a LED so if anybody here could help and suggest some things for me to start? please.....**broken link removed**
It won't test with a battery, but it would test safely with a 24 volt transformer or ac wall wart. You might need to play with C1 R1 to get the supply voltage right.
It won't test with a battery, but it would test safely with a 24 volt transformer or ac wall wart. You might need to play with C1 R1 to get the supply voltage right.
I'd kick out C1 and D1 through D3 and use a DC power supply of 9 to 12V instead.
Also kick out the triac and use an NPN-transistor instead (e.g BC547 or BC337).
Use a base resistor of 6.8K to 10K and connect the LED via a current limiting resistor from the collector to +VDD. Connect the transistor emitter to ground.
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