I Built and Used My First Incandescent Bulb Current-Limiter
Paul wrote:
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It's not clear to me that a thermistor would prevent a fuse from
blowing in a guitar amp, or any other circuit, that has a short
to ground. Because while the resistance may be high initially, while
the thermistor is cold, the resistance will go low as it heats up,
allowing the fuse to blow.
** Under a short circuit condition , NTC thermistors *explode*
like a fire cracker spreading debris all over the place.
Remember a light bulb in series with the AC line, is mainly a
trouble-shooting tool.
** Of course, a very primitive one that works only sometimes.
Tube radios and tube amps are the main use.
May SS amps will refuse to work with a lamp in series.
..... Phil
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