Yes, a variable resistor could be used to enable
selecting different frequencies. Your biggest problem
would be in calibrating the settings, which would
require frequency measuring device(s) One thing to
note, however, the oscillator circuits you refer to
are rather crude forms without a high level of
frequency stability, so the feasability would depend
on the accuracy you want. Also, you would probably
have to switch capacitors as well in
order to get a large variation in frequency. To get a
large variation in frequency without changing
capacitors as well as resistance could be very
difficult to set.

--- jkollingnl <innergy222@...> wrote:

> I wanted to ask you all, since the Beck or Clark
> devices seem to work
> at certain Hz frequencies, and these frequencies are
> set with
> resistors, would it be possible too, to have a
> potentiometer for
> dialing in different kinds of frequencies? my
> electronics knowledge is
> not specifically high at this moment as you can
> abvisouly make out. :)
> Thanks! Joel
>
> Example: say i want to be able to dial in any
> frequency from 1 to
> 30.000 Hz, or some other configuration of range.
>
>
>
>


__________________________________________________
Do You Yahoo!?
Tired of spam? Yahoo! Mail has the best spam protection around
http://mail.yahoo.com