1
\$\begingroup\$

I want design a dimmer circuit that have output voltage of 0-380V(rms). I didnt see any application about 380 V dimmer circuits and there is no information about 380V application in MOC series opto datasheets. But some optotriacs allow application for 380 V such that VO3062 or IL410 in their datasheets.

The 380 V (single phase) is produced from 220 to 380V transformer in my application. I have designed a dimmer circuit for 0-220V before and it worked perfectly. This circuit is below. I want use again these components and this circuit.

enter image description here

But now I want control 0-380 V output and I dont know what will be resistors of circuits. I think they will not change because of resistor value is related with input voltage of MOC3061 (VCC is 5V and current must be 15 mA for MOC3061 series ). Can I use again MOC3061 and BT137 for control of 0-380 V dimmer circuit?

\$\endgroup\$
1
  • \$\begingroup\$ I would rather switch to HV opto triac without trying with MOC rated for 240VAC. \$\endgroup\$
    – Marko Buršič
    Commented Apr 26, 2016 at 11:30

1 Answer 1

Reset to default
2
\$\begingroup\$

The resistors don't look like their values are all that important, really, as long as the parts can take the extra voltage (and any surges or spikes which could occur) it's probably ok, just test it with a small load to make sure it's working ok first

\$\endgroup\$

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service and acknowledge you have read our privacy policy.

Not the answer you're looking for? Browse other questions tagged or ask your own question.