[sdiy] PPG Wave SSM2044 filter

[Antti Huovilainen]

On Fri, 22 Jan 2010, Colin f wrote:

> But do we think PPG were after a subtle change in filter response ?
> Or was it simply that a 620p cap was 2 pfennig cheaper than 820p ?

That or an alternative way to affect the gain needed for self oscillation 
(although I can't really think why they'd want to).

Antti

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