[sdiy] Reducing maximum current through analog switches in ASM-2ADSR

[harrybissell at wowway.com]

Jumping in late on thread...

My thoughts would be to scale the resistor values up and make the
cap smaller...

or add a secondary method (switchable) to boost the current in
attack mode only...

Remove any resistance in series with the pot, and count on the
100 or so ohms to limit the current in the analog switch. I agree with
some previous comments that the peak current will be so short in duration that
it will not cause significant heating and cause the device to die.  The
resistance is non-linear with applied voltage, but who cares...

Maybe make a "short attack" mode that uses a smaller cap (can you say PAiA
2720-4 ? :^)

H^) harry






On Mon, 24 Nov 2008 16:43:36 +0000, Tom Wiltshire wrote
> On 24 Nov 2008, at 16:14, Barry Klein wrote:
> 
> > How about putting 2 switches in parallel?
> 
> Simple but brilliant.
> 
> Reduces on resistance and increases current handling. Perfect.
> 
> T.
> 
> PS: Has anyone ever seen an ASM2 ADSR die because of this problem?
> 
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Harry Bissell & Nora Abdullah 4eva