[Amps] SAFETY WITH HIGH VOLTAGE

[R.Measures]

On Aug 23, 2004, at 8:49 AM, Harold B. Mandel wrote:

> Dear Peter,
>
> On very close examination of the wirewound that measures fifty some odd
> ohms,
> there IS a pinhole through the ceramic, about midway on the body of the
> resistor!
>
- -  Autopsy time.

> Thank you.
>
> Hal Mandel
> KA1XO
>
>> I'd agree that the 53 ohm one sounds suspiciously low: I suppose
>> it's
>> possible it arced from turn to turn and fused that way. can you see
>> anything wrong with it on a visual inspection? The usual reason for
>> open
>> circuits in wirewounds is, I was told by a manufacturer,
>> frequently
>> corrosion where the coating has a pinhole.
>>
>> These days, I use two bleeders in parallel, and even then, I don't
>> trust
>> them!
>>
>> 73
>>
>> Peter G3RZP
>>
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>
Richard L. Measures, AG6K, 805.386.3734.  www.somis.org