MOC3041 doesn't cut power

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MOC3041 doesn't cut power

Postby Domange » Sat Dec 10, 2016 7:37 pm

Hello,

I have a simple circuit to power on and off a heater with a command line using mains, only fews 10mA is necessary.

My cicrcuit is based on a Fairchild MOC3041 commanded by a transistor and directly connected to the command line of the heater.

When switched on the triac in the MOC3041 is never off even I don't send anymore current in the command diode.
When I disconnect the load, the triac is switched off and I can switch on it but it is not possible to switch off whithout disconnecting the load.

I also try with a 50W lamp, it is the same problem.

Is anybody can help me?

Thank you
Last edited by Domange on Sun Dec 11, 2016 12:26 pm, edited 1 time in total.
Domange
 
Posts: 4
Joined: Fri Dec 09, 2016 2:17 pm

Re: MOC3041 doesn't cut power

Postby Domange » Sun Dec 11, 2016 12:25 pm

Hello,

I found the fix.

The MOC3041 is not intended to command directly a load but only another Triac. :cry:

so it necesary to have a "real" tric behind the MOC

I try it with a BTA12-600B and all works fine
Domange
 
Posts: 4
Joined: Fri Dec 09, 2016 2:17 pm


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