hi all,
rich wrote...
> If your amplifier arced mysteriously, it might be interesting to measure
> the resistance of the VHF parasitic suppressor resistor.
it is perhaps important to note that an increase in the resistance of
a composition resistor (or a film resistor, too) can increase when
the resistor gets too hot. (rich has said this, too.) it doesn't
have to be so hot that it bakes the color bands to new colors. the
point i want to convey is that it doesn't *have* to be a parasitic
oscillation that causes this change. i've seen resistors in dc power
supplies increase by a factor of 3 or 4 by chronic overheating, but no
smoke was emitted.
73,
George T. Daughters, K6GT
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