Well, I plan to leave the original 2 I built stock. I am building 2
more. I think I'll use the cap you have listed below (thanks). Like
you, on this one I intend to socket the chips so I can compare. Once
I know what I want, I'll go back and change the originals.
Now, here is another question. I plan to add internal clocks for my
2nd dual ASR. I see no reason in many cases to tie up an external
osc or clock for the job. I do intend to normal that to the jacks so
I can still jack in an external clock.
I am trying to decide what I think the useful range of the internal
clock shoudl be. I want to scale the clock frequency control to only
include the useful range. Since I am not an experianced ASR user,
any input would be apprecited.
Larry
--- Richard Brewster <pugix@...> wrote:
Do you Yahoo!?
Yahoo! Domains � Claim yours for only $14.70/year
http://smallbusiness.promotions.yahoo.com/offer
more. I think I'll use the cap you have listed below (thanks). Like
you, on this one I intend to socket the chips so I can compare. Once
I know what I want, I'll go back and change the originals.
Now, here is another question. I plan to add internal clocks for my
2nd dual ASR. I see no reason in many cases to tie up an external
osc or clock for the job. I do intend to normal that to the jacks so
I can still jack in an external clock.
I am trying to decide what I think the useful range of the internal
clock shoudl be. I want to scale the clock frequency control to only
include the useful range. Since I am not an experianced ASR user,
any input would be apprecited.
Larry
--- Richard Brewster <pugix@...> wrote:
> 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
> >>
> >>
> >>
> >>
> >>
> >>
> >>
> >
> >
> >
> >
> >
> >__________________________________
> >Do you Yahoo!?
> >Yahoo! Domains � Claim yours for only $14.70/year
> >http://smallbusiness.promotions.yahoo.com/offer
> >
> >
> >
> >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
> >
> >
> >
> >
> >
> >
> >
> >
>
>
>
> ------------------------ Yahoo! Groups Sponsor
>
> 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
>
>
>
>
>
Do you Yahoo!?
Yahoo! Domains � Claim yours for only $14.70/year
http://smallbusiness.promotions.yahoo.com/offer