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(no email)
Date: Sat Dec 11 2004 - 21:43:03 EST
Hello Michael,
I respond as follows:
"Same applies to electrically-operated air horns (yuc yuc)."
Want to name me an electrically-operated air horn? Not an
electrically-operated compressor powering an air horn but an
electrically-operated air horn.
All the electricity does in the so called electrically-operated air horn is
drive the compressor. Maybe operate a solenoid valve.
The air horn itself doesn't have to have electricity at all to work. They do
just fine on air compressed from an engine driven compressor or from a bottle
of compressed nitrogen or even Freon except they freeze up if you blow them
too long. The air horns on most 18 wheelers never see electricity in any of
their system. The valves are manually operated by pulling a chain or cord and
of course the air is compressed by a compressor driven by the truck's engine.
"guess by your definition the only electric horn would be a tone-generator
much like in some loud-hailers, but I don't think that's really what you're
asking about is it?"
No, my definition of an electric horn is one that doesn't need a source of
compressed air to make it work but works on electricity alone. (A CD player is
a tone-generator. It reads the bits on a disk and generates a lot of tones
including that of an air horn if so recorded.)
"Of course the vibration produces air pressure which produces the noise, so
are they really electric horns or are they air horns???"
The answer may be since the same principle applies to audio speakers, are they
air speakers?
Or since the exhaust I hear from my car engine is really produced by air
pressure, is that an air engine? I think not since I have to put $2 a gal.
gasoline in it. :=)
Have fun?
I intend to try.
Bill
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