[Elecraft] K3: Power puzzlement

[David Christ]

It certainly would be simple enough to get some resistors, measure 
them and the voltage.  Put the voltage across various combinations 
and see how calculated current using ohms law compares to the meter 
reading.  You could probably use a 50 ohm dummy load.  That would be 
around 250 to 300 ma.  Only about 3 to 5 watts.  You will at least 
get an idea it the unit measures under 1 amp reasonably well.

Or even simpler, find someone with a Simpson model 260 VOM.  It 
measures DC up to 10 amps.

David K0LUM

At 9:54 AM -0800 1/18/11, N5NA wrote:
>I have the Model 101 Super Whatt Meter so I hooked mine up to see what it
>reads.  I'm showing 0.0A with the switch off and 1.6A with the switch on and
>the P3 on.
>
>Mine is an older model and measures the current on the negative side.  If
>yours is the same I wonder if the current you're seeing could be ground
>related.
>
>73,  Alan  N5NA
>
>
>
>Ralph Parker wrote:
>>
>>  I thought I'd check to see how much current my K3/100 draws under various
>>  operating condx (for battery powered QRP portable operation, etc.).
>>
>>  What the heck is drawing 1.7 amps when the front panel power switch is
>>  off?
>>
>>  VE7XF
>>
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