> Recently, Somebody Somewhere wrote these words
>> Are those resistors carbon-composite types from the 1960's?
>>
>> In that case I wouldn't be so sure that you can eliminate them. We had
>> couple of those in a student lab I was teaching. Every once in a while
>> we found 5.6kohm devices with roughly 200ohms and/or vice versa.
>>
>> These were unused resistors which were still in their original
>> package, not exposed to anything which might be considered harmful for
>> a resistor during the 30+ years of their shelf life...
> Being a complete lazy ass, I checked all these resistors with Analogue
> Signature Analysis, using two flying probes with a variable (frequency
> and magnitude) sinewave. The display shows Voltage on X axis, and
> current on Y axis, so a reesistor looks like a diagonal line. They came
> up pretty similar. It's not rocket science, but it is testing under
> realistic conditions.
> Anyhow, _I_ eliminated the resistors, I didn't take them for granted.
Hi Declan,
I didn't test our broken, unused carbon-composites with a curve
tracer, but they behaved like resistors even if broken. The only
problem was that their resistance was more than a factor 10x off from
the nominal value...
Uwe.
--
Author: Uwe Zimmermann
INET: [EMAIL PROTECTED]
Fat City Hosting, San Diego, California -- http://www.fatcity.com
---------------------------------------------------------------------
To REMOVE yourself from this mailing list, send an E-Mail message
to: [EMAIL PROTECTED] (note EXACT spelling of 'ListGuru') and in
the message BODY, include a line containing: UNSUB CHIPDIR-L
(or the name of mailing list you want to be removed from). You may
also send the HELP command for other information (like subscribing).
