RE: my digital tc tuner

["Tesla list" <tesla@xxxxxxxxxx>]

Original poster: "CajunCoiler" <cajuncoiler@xxxxxxxxxxx>


10-turn pots are good.
10-turn pots can be our friend. :)


> -----Original Message-----
> From: Tesla list [mailto:tesla@xxxxxxxxxx]
> Sent: Friday, April 27, 2007 10:14 PM
> To: tesla@xxxxxxxxxx
> Subject: Re: my digital tc tuner
>
>
> Original poster: "claudio masetto" <claudmas@xxxxxxxxxxxxxxx>
>
> I did the same thing a while back. Works great. Use a 10 turn pot for
> easier adjustment.
>
> Claude.
> ----- Original Message ----- From: "Tesla list" <tesla@xxxxxxxxxx>
> To: <tesla@xxxxxxxxxx>
> Sent: Friday, April 27, 2007 2:30 PM
> Subject: my digital tc tuner
>
>
> >Original poster: Ben Buxton <bb@xxxxxxxxxx>
> >
> >
> >Until now, I have been tuning my coil with Terry's TCT and a
> >multimeter to accurately measure the resulting resonant frequency. I
> >decided I wanted to make something a little more self contained so I
> >decided to combine it with a PIC based frequency counter.
> >
> >This is my resulting device:
> >
> >http://au.cactii.net/~bb/tesla/dtct.jpg
> >
> >So now I just adjust the dial until the LED goes bright (sec) or dim
> >(pri), then I can read the frequency off the display for < ~1KHz accuracy.
> >
> >I used this frequency counter circuit (variant 1):
> >
> >http://www.qsl.net/dl4yhf/freq_counter/freq_counter.html
> >
> >Chosen mostly because it uses an LED display - goes much better
> >aesthetically with a TC than LCD IMHO. :)
> >
> >The main concept involves having both circuits on the one board,
> >then just joining the output of the TC oscillator to the input of
> >the PIC (via a 2k resistor).
> >
> >It's built on prototyping board, so no neat layout, but if anyone
> >wants more details, just ask.
> >
> >Ben
> >
> >
> >
> >
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