[sdiy] Harry LFO trick on Ray wilson's Minisynth

[Harry Bissell Jr]

Harry's reply :^P

The square wave will turn into a very narrow pulse.
This is normal (side effect of the ramp generation)

You can use the pulse to trigger envelopes etc but
it is no longer usefula as a modulation source

H^) harry



--- Frédéric Bourgeais <fred at upian.com> wrote:

> Re-Sorry for previous mail, this the same question
> with object,
> 
> I have a little question:
> I modified my EFM VClfo (3080 + tl074, square and
> tri output ONLY ), to 
> obtain ramp LFO.
> 
> I used the Harry trick on the Ray wilson's Minisynth
> , using 2 reversed 
> diodes near of Triangle capacitor. It's really nice
> and work fine, but 
> only on tri/ramp output. If the switch is in "Ramp"
> position, the 
> square output don't works !
> 
> Is normal ? ( that's why EFM VcLFO use 1/2 TL074 to
> provide Ramp signal 
> ? )
> Or reversing diodes, or something else could raise
> the square ?
> 
> Thanks
> ++Fred
> 
>