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

[Ken Stone]

Check out my Utility LFO circuit. It shows how I derive a square wave
irrespective of the shape of the tri/saw wave. Perhaps this can be done on
your LFO too?

http://www.cgs.synth.net/modules/cgs58_lfo.html

Ken

>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
>> 
>> 
>
>
_______________________________________________________________________
Ken Stone   sasami at hotkey.net.au or sasami at cgs.synth.net
Modular Synth PCBs for sale <http://www.blaze.net.au/~sasami/synth/>
Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>