Replacing a tube oscillator with a FET.

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ampgeek
Posts: 1009
Joined: Sun Oct 15, 2006 1:31 am

Re: Replacing a tube oscillator with a FET.

Post by ampgeek »

Thank you Masco!

That approach includes a speed control function that I didn't see on the RG Keene circuit.

I suspect that one could be easily added to the Keene circuit with a pot on the oscillator gate.

Thanks again to you both for providing some direction!

Cheers,
Dave O.
Mark
Posts: 3271
Joined: Sat Jan 15, 2005 8:10 am
Location: Sydney Australia

Re: Replacing a tube oscillator with a FET.

Post by Mark »

The R.G. Keen circuit looks as if it would drop right into the 18 watters tremolo circuit.

Thanks for all the good suggestions.
Yours Sincerely

Mark Abbott
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Masco
Posts: 251
Joined: Thu Nov 29, 2007 8:36 pm
Location: Maryland

Re: Replacing a tube oscillator with a FET.

Post by Masco »

ampgeek wrote:Thank you Masco!

That approach includes a speed control function that I didn't see on the RG Keene circuit.

I suspect that one could be easily added to the Keene circuit with a pot on the oscillator gate.

Thanks again to you both for providing some direction!

Cheers,
Dave O.
R.G.'s does have speed control. Look at the 3M rev log at feedback network of oscillator.
ampgeek
Posts: 1009
Joined: Sun Oct 15, 2006 1:31 am

Re: Replacing a tube oscillator with a FET.

Post by ampgeek »

Doh!! I missed that.
Thanks again,
Dave O.
User avatar
Kagliostro
Posts: 549
Joined: Wed Dec 30, 2009 12:09 am
Location: Italy

Re: Replacing a tube oscillator with a FET.

Post by Kagliostro »

May be here you find something of interesting

http://www.blueguitar.org/new/schem/ele ... kede30.pdf

K
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