Zero Crossing Detector

[syedaban]

Hi
I am working on a zero cross detector circuit using PC817 for a dimmer circuit.
But the problem is that it needs a 12V ac input from a step down transformer,
which makes the circuit bulky and unviable.

Please help me find a circuit/IC that can work directly on a 230V ac.

Thanks in advance.

Syed

 

[ud23]

https://www.edaboard.com/threads/46823/
https://www.edaboard.com/threads/68556/
**broken link removed**

 

[syedaban]

Thanks for ur reply.
The image is not clear,can you please explain it

 

[bubulescu]

Check the links ud23 provided. You will see there all you need.