On Fri, 9 Sep 2011 22:44:35 -0500, Don Cunningham wrote:

>I am trying a thermistor from Mouser on my 516F2 power supply for the KWM2A 
>at the suggestion of a friend.  I don't notice the "thump" on the 
>transformer anymore, so it may just be enough of a delay to help protect 
>switches, transformers, etc. 

I've salvaged NTC thermistors out of dead PC power supplies, they usually seem
appropriatly sized for linear loads up to a few hundred watts. Have one in my
PS-7 and one in an AC-4. It tames the thumps nicely, and anyone who has a PS-7
knows that it has a monster thump.

See here:

http://zerobeat.net/drakelist/smf/index.php/topic,252.0.html

73,

-Jim




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