[sdiy] TB303 Slide

Harry Bissell harrybissell at wowway.com
Fri Jun 8 19:36:36 CEST 2012

Lies, Damn Lies, and SPICE simulations   :^)


H^) harry

----- Original Message -----
From: Dave Manley <dlmanley at sonic.net>
To: tim102 at timstinchcombe.co.uk
Cc: 'Synth DIY' <synth-diy at dropmix.xs4all.nl>
Sent: Fri, 08 Jun 2012 12:05:10 -0400 (EDT)
Subject: Re: [sdiy] TB303 Slide

Simulations, Tim? 


We don't need facts - we want to argue about what we 'know' to be true.



-------- Original Message --------
 From: Tim Stinchcombe <tim102 at timstinchcombe.co.uk>
 Sent: Fri, Jun 8, 2012 08:56 AM
 To: 'Mattias Rickardsson' <mr at analogue.org>
 CC: 'Synth DIY' <synth-diy at dropmix.xs4all.nl>
 Subject: Re: [sdiy] TB303 Slide

>> How would it know that it came from 0 V and not 1 V?
>Because the initial step was *two* volts and not one, and it has been
>charging for 15ms, starting from 0V.
>> No, they both follow the same curve from 1 V on - the 
>> exponential curve of the RC time constant in question. :-)
>Here is simulation output of the two curves:
>As noted before, at any given time the gradient of the 1-2 curve (red) is
>always less than (actually half) that of the 0-2 curve (green) - you simply
>cannot 'drop' one on top of the other!!!
>Tim Stinchcombe 
>Cheltenham, Glos, UK
>email: tim102 at timstinchcombe.co.uk
>Synth-diy mailing list
>Synth-diy at dropmix.xs4all.nl
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Harry Bissell & Nora Abdullah 4eva

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