Cgs synth

These caps are critical. I used Mouser 23PS222, Polystyrene Film
Capacitors. Same capacitor as in the CGS VCO.

http://www.mouser.com

-Richard Brewster

josh summitt wrote:

>Still not getting it. I have been tracing my input though the circuit and i
>loose it entirely at the 2.2nF Capacitors. so i have no input into the base
>of the 2n2222. I have no idea what is wrong unless i have the wrong
>capacitors. Does it matter here what type of capacitor that you use. I am
>useing Polyethylene Metalized Film capacitors. I can not imagine that this
>would cause any problems. What kinda of caps are you guys using that got the
>filter to work?
>Josh
>
>On 3/30/06, josh summitt <ascetik@...> wrote:
>
>
>>Well thanks, i'm going to hash out whats wrong with them tonight. I love
>>the samples of this filter and cannot wait to get it finished.
>>Josh
>>
>>
>>On 3/30/06, Richard Brewster <pugix@...> wrote:
>>
>>
>>> For reference:
>>>
>>>http://www.pugix.com/bottom-cabinet-lower.htm#synthacon
>>>
>>>Click the schematic link to get the GIF.
>>>
>>>BTW, it is not exactly 1 volt/octave, but it is in the ballpark. Both
>>>of my filters work fine. I beta-matched the transistors to get a
>>>similar response in both filters.
>>>
>>>-Richard Brewster
>>>
>>>
>>>The Alison Project wrote:
>>>
>>>
>>>
>>>>I have also built the Steiner VCF and implemented John Loffink and
>>>>
>>>>
>>>Richard
>>>
>>>
>>>>Brewsters mods for 1V/oct as well as adding a second FM and FM pots as
>>>>
>>>>
>>>per
>>>
>>>
>>>>the schematic on Richard Brewster's webpage and it works perfectly,
>>>>
>>>>
>>>great
>>>
>>>
>>>>module...
>>>>
>>>>I believe the Elec Caps on the newer boards are correct...
>>>>
>>>>I am still very new to this and don't understand much besides reading
>>>>instructions, so far all the CGS items I've built work great (knock on
>>>>
>>>>
>>>wood
>>>
>>>
>>>>as I am working on another 4 right now)...
>>>>
>>>>
>>>>----- Original Message -----
>>>>From: "Louis van Dompselaar" <louis@...>
>>>>To: <cgs_synth@yahoogroups.com>
>>>>Sent: Thursday, March 30, 2006 3:13 PM
>>>>Subject: Re: [cgs_synth] steiner filter problems
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>>josh summitt wrote:
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>>Has anyone been able to get this filter to work?
>>>>>>
>>>>>>
>>>>>>
>>>>>>
>>>>>Yes, mine is working fine and has been from the moment it was built.
>>>>>Made no changes. Just built it according to Ken's web page (and
>>>>>on Ken's PCB as well).
>>>>>
>>>>>Louis
>>>>>
>>>>>
>>>>>
>>>>>The CGS Modular Synth home page: http://www.cgs.synth.net/
>>>>>
>>>>>Yahoo! Groups Links
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>
>>>>The CGS Modular Synth home page: http://www.cgs.synth.net/
>>>>
>>>>Yahoo! Groups Links
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>>
>>>
>>>
>>> The CGS Modular Synth home page: http://www.cgs.synth.net/
>>>
>>>
>>>
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>>>
>>>
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>>>
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>>> ------------------------------
>>>
>>>
>>>
>>
>>
>
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>The CGS Modular Synth home page: http://www.cgs.synth.net/
>
>Yahoo! Groups Links
>
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