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Re: Listening to TC?
Original poster: "Malcolm Watts by way of Terry Fritz <teslalist@qwest.net>" <m.j.watts@massey.ac.nz>
Hi Matt,
> Original poster: "by way of Terry Fritz <teslalist@qwest.net>"
<Mddeming@aol.com>
>
> Hi Malcolm,
>
> I don't think it does drop off. I think that coils should have many
> interesting "sounds" beyond human hearing range, which is why I'm trying to
> find the devices/references/parts to transform them into the audible range.
> The trick is to do it on limited income with home-brew equipment.
>
> Matt D.
My remark was made with tongue-in-cheek of course :). In essence,
direct down-conversion. An outline of a solution would be to use a
balanced modulator with a simple variable (tuning) oscillator for the
carrier and maybe a low pass filter to get rid of the upper sideband.
The MC1496 (?) balanced modulator springs to mind. The carrier osc
could be a simple 555 circuit.
Malcolm