Cgs synth

Hi Larry,

Yes, I want to use the 100n to lessen the droop. Isn't the LF356 better
here than a TL071? I am looking at the LF356 data sheet, and one of the
features is extremely fast settling time. Must be a reason Ken picked it
over the TL071. I socket all my CGS boards, because they are
experimental, so I can play around with different chips.

-Richard

Larry Hendry wrote:

>The stardard recommended cap is the 47nF IIRC. I used that one, and
>the stock op amp and I am less than satisfied with the droop. I plan
>to change the S&H op amp to a FET input amp TL071 and probably change
>the cap to a 100n. So, I think this you list below may be a good
>choice.
>Larry
>
>--- Richard Brewster <pugix@...> wrote:
>
>
>>I'm ordering parts for the ASR. Found this mouser part:
>>505-MKP20.1/250/5. WIMA metallized polypropylene film. It even
>>says,
>>"suited for sample & hold circuits." I think this is the right
>>type of
>>capacitor, yes? Now this is a 100nf part. There is a discussion
>>on
>>Ken's web page about this capacitor, which is specified to be
>>anywhere
>>from 47nf to 470nf. You may need to add series resistors from the
>>4052
>>outputs into these caps to protect the chip. So my second question
>>is
>>what values have folks used here and did they need to add
>>resistors?
>>Details appreciated.
>>
>>Thanks,
>>
>>-Richard Brewster
>>
>>
>>
>>
>>See the following URLS for the CGS Modular Synth home page:
>>Main: http://www.cgs.synth.net/
>>Secondary: http://otherunicorn.0catch.com/synth/
>>Yahoo! Groups Links
>>
>>
>>
>>
>>
>>
>>
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>
>See the following URLS for the CGS Modular Synth home page:
>Main: http://www.cgs.synth.net/
>Secondary: http://otherunicorn.0catch.com/synth/
>Yahoo! Groups Links
>
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