[Amps] How do you measure HV with reasonable accuracy?

Jim Barber audioguy at charter.net
Fri Aug 7 10:56:18 PDT 2009


Great tip, thanks!
Just clicked the clicker and bought 2 sets. (I have a friend with 
similar interests)

73,
Jim, N7CXI

Mike McCarthy, W1NR wrote:
> On the e-place there is a company that has a quantity of Fluke 27/FM
> multimeters w/ 80K6 HV probes for $65. I bought one some time ago and am
> very pleased with it. They are ex military, comes with carry case and
> the one I got hardly looks like it was used.
> 
> Mike, W1NR
> 
> 
> Jim Barber wrote:
>> I need a HV probe with reasonable accuracy for working on this growing 
>> stack of hamplifiers. I have a Simpson 260 and know some of those 
>> pitfalls, and a 40KV CRT chicken stick that's probably +,- 20% on a good 
>> day.
>>
>> How about:
>> (1) Five hand-selected 1M, 2-watt in series on a PCB or perfboard
>>
>> (2) Bring out two HV connectors from the "bottom-most" resistor in the 
>> chain and then use a precision 1KV FET meter or VTVM, reading it as "x5" 
>> (I already have the meters)
>>
>> Any better ideas? It probably won't see much over 4KV.
>>
>> Thanks,
>> Jim, N7CXI
>>
>>
>>   
> 
> 



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