[sdiy] Poor man's EMC testing?

[Barry Klein]

We bought this sniffer probe kit that came with a little preamplifier box.
I unknowingly touched the contact probe to a circuit more than it could 
handle
and fried it.  Before that it worked fine with my LeCroy scope to see much
of what a more dedicated spectrum analyzer would care to see.  I opened
up the box and found a little regulator circuit and single amplifier part. 
I called
the manufacturer...  New box $400.  No replacement parts.  So....
I bought a Mini-Circuits part for seven bucks, added a 78L08 regulator and 
12V
power adapter - and wa la... works better than the original.  Make your own.

Barry



>>
>> The input sensitivity of oscilloscopes and dynamic range is significantly
>> worse than spectrum analyzers.
>>
>> A suitable spectrum analyzer should not be too expensive, but it may take
>> some time to find out what to search for.
>>
>> Cheers,
>> Magnus
>>
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