Wouter,

On Tue, 16 Sep 2003 12:59:15 +0200, Wouter van Ooijen wrote:

> > Rather depends what you mean by "military" - most (old)
> > UK military headsets that I've seen (typically used by
> > ATC) have carbon-granule microphones, like old telephone
> > handsets, so you'd need some sort of amplifier to use
> > with a "normal" audio input.
>
> Rather: an attenuator, because a carbon mic (at its nominal current)
> outputs a much larger voltage than a dynamic mic or a electret (with
> build-in amplifier).

OK, my "some sort of amplifier" would have a gain of less than one!  :-)

I didn't really mean amplifier as such, but a circuit to supply the current through the mic, then to pass on
only the AC component at the right level for the audio input.  I think this is a "little knowledge is a
dangerous thing" item for me so I'll quit while I'm only a little behind!

Cheers,

Howard

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