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previous: SpeedRacer FWIW on the slower issue - ... -- 10/16/2000 1:58 AM

Re: Fender Brownface "Harmonic Vibrato" (6G12A)

10/16/2000 3:52 PM
Scott Swartz	Re: Fender Brownface "Harmonic Vibrato" (6G12A) I think you mean Intersil ICL8038 or Exar XR2206, both function generators chips, just add a timing cap and a few resistors. I've used the ICL8038 and it works well, and it has a CV in port for hookup to a speed pedal. These chips generate a wave that is a fairly small percentage of the rail voltage (max +/- 15V), so you will need some additional voltage gain. I submitted a tube based Univibe for publication to Vacuum Tube Valley magazine and they said it would be published in 2000. I need to email them and check on it. Magazines have a very long delay between when the article is accepted and when its actually out, as much as a year or more! Its the same thing at Glass Audio. Anyway, when its out you guys might be interested in checking it out....

10/16/2000 3:52 PM

Scott Swartz

Re: Fender Brownface "Harmonic Vibrato" (6G12A)

I think you mean Intersil ICL8038 or Exar XR2206, both function generators chips, just add a timing cap and a few resistors. I've used the ICL8038 and it works well, and it has a CV in port for hookup to a speed pedal. These chips generate a wave that is a fairly small percentage of the rail voltage (max +/- 15V), so you will need some additional voltage gain.

I submitted a tube based Univibe for publication to Vacuum Tube Valley magazine and they said it would be published in 2000. I need to email them and check on it. Magazines have a very long delay between when the article is accepted and when its actually out, as much as a year or more! Its the same thing at Glass Audio. Anyway, when its out you guys might be interested in checking it out....