Re: resistor values--wattage and tolerance
- From: "mc" <look@xxxxxxxxxxxxxxxxxxxxxxxxxx>
- Date: Wed, 21 Dec 2005 00:59:28 -0500
<antonlamont45@xxxxxxxxx> wrote in message
news:1135142927.495740.191820@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
> sorry, it is obvious (after reading up on definitions of tolerance and
> watts..total newbie here)
>
> sometimes things that seem obvious are not always so, (maybe not in
> electronics but definitely in other facets of life). in this case i
> guess that adage doesn't apply. if only everything else were that
> simple : )
I understand. Also, you have a perfect right to wonder whether any
"non-ideal" properties of a resistor are involved. For example, in
high-frequency circuits, the inductance of the resistor (which is normally
of no concern at all) might be different for a 1/4-watt than for a 1/2-watt
resistor, and I can imagine designing a circuit that performs differently
with one than with the other. Inductance is a "non-ideal" property of
resistors since a perfect resistor wouldn't have any.
Also, a more familiar example is electrolytic capacitors, which are rated
for a maximum voltage, but they don't work very well if the actual voltage
is too far below the maximum (like a 100-volt capacitor in a 1-volt
circuit).
.
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