[ARC5] Dear Vibrating Smart People....

Kenneth G. Gordon kgordon2006 at frontier.com
Thu Dec 6 13:41:44 EST 2012


On 7 Dec 2012 at 7:29, Neil wrote:

> > Thank you to everyone for the good info and suggestions.
> >
> > The snubber overheats with or without load.
> 
> Is the 10K resistor the original unit? I don't see its rated
> dissipation specified on the circuit diagram, so if not, what
> made you choose a 1/2 Watt unit?

1/2 watt?!?!?!?

Gee.... I would never use a 1/2 watter in such service.

That is the first thing I would change: try a 10 watter.

Look at the P-P voltage with a scope and figure out the total wattage. I'll bet 
you will find it to be 3 to 5 watts. No wonder your 1/2 watter is getting hot.

Ken W7EKB


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