Re: EOL's

["Al Colombo" <securitymission@xxxxxxxxxx>]

> No, Al.  The percentage of deviation is a manufacturing issue.
> The resistor will remain at whatever it was when it was made for
> time immemorial.  Tolerance is not an indicator of the resistor's
> propensity to change value over time (as you originally stated).

How much experience do you really have at servicing electronic systems,
Robert? I was trained as an associate engineer in electronics, the man
between the engineers and the manufacturing floor.  My experience also
includes the manufacturing and repair of X-ray equipment as well as all
kinds of analogue and digital electronic systems.  I worked as a NuTone
Service Center as well as other manufacturers.

Your assessment of the "resistor" is not practical but rather
theoretical.  Humidity and temperature most definitely play a major
part in the stability of carbon in a resistor.  This is one of the most
fundamental facts taught in electronic school in lab.  It's also one of
the facts you are bound to discover when servicing electronic systems
on the work bench.  Exposure to lightning is also another factor, but
only because of the heat that such an intense current will cause inside
the carbon of a resistor component.

Al


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