[ARC5] Need Help with Variac Diagnosis

Bill Cromwell wrcromwell at gmail.com
Thu Feb 19 17:24:45 EST 2015


Thankfully my Variac is puny at about one amp. I only intend to use it 
for a variable power supply to tickle something akin to a megger and 
maybe for a curve tracer. For radios I like bucking transformers to 
knock down the excessive voltage.

73,

Bill  KU8H


On 02/19/2015 05:08 PM, Robert Nickels wrote:
> On 2/19/2015 3:05 PM, Kenneth G. Gordon wrote:
>>   what happened with mine: about 1/3 to 1/2 the time.
>
> My experience is the same.   And since my variac is connected to a 
> master switch along with all the other test equipment, the exact ratio 
> depended on how much and what kind of other loads were present.    I 
> also seem to have a knack for sensing zero crossing ;-)
>
> Turning the variac box off separately solves the problem.  Until I 
> forget to.
>
> 73, Bob W9RAN
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