[Boatanchors] One more point 120 vac Variac

Jim Wilhite w5jo at brightok.net
Tue Jun 14 11:48:55 EDT 2011


Hi Mac,

That is how I found the figures I quoted Mac.  I took an AC cord and 
plugged it into the output then put my meter across it (digital).  Those 
are the figures I measured.

Jim/W5JO


----- Original Message ----- 



>
> Hi, Jim.
>
> I'd suspect that the voltage meter that
> is on that device is not very accurate!
>
> Use an accurate digital multimeter and
> see what the ACTUAL output voltage is
> compared with the input voltage from the
> power line.
>
> * * * * * * * * * * *
> * 73 - Mac, K2GKK/5 *
> * (Since 30 Nov 53) *
> * Oklahoma City, OK *
> * USAF, Ret (61-81) *
> * * * * * * * * * * *
>
>
>
> ----------------------------------------
>>
>>
>> I have a large unit that is sold by KRM. It has a voltage meter on it
>> and the scale under the knob is marked VOLTS. However, as I check it
>> with my meter, at 95 the meter reads 110 and so does the my meter 
>> across
>> the output. At 110 the meter reads ~120. This is more like a % scale
>> rather than a voltage readout on the scale. At full scale it is 130 
>> and
>> the voltage reads that on both scales.
>>
>> Jim/W5JO
>>
>>
>>
>> > ----- Original Message -----
>>
>> >
>> > Not according to the General Radio catalogues. The dials
>> > are calibrated in _volts_. There are two scales on most, one
>> > on each side, for the two ranges. For 115V nominal Variacs
>> > the ranges are 0-115 and 0-140V on the overvoltage side. >
>> >
>>



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