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Steiner questionne

2004-02-07 by Krimo

Hi all,

Doing Oakley SVF and CGS Steiner VCF this weekend. Got a few questions
about the notes/modifications, mainly because I can't figure out
difference between "Rev 1" and "first and second run" (I think second
run isn't necessarily the same as Rev1?)

-Is it correct that input elec's polarities are all correct on the rev 1
pcb?

-Is it correct that the 10 uF elec between output transistors and input
of the op amp buffer still has to be installed backwards on the rev 1
pcb?

-Is it correct that all the changes suggested by Nyle Steiner are
processed on the rev 1 pcb and that I can just "stuff away" except for
last question?

Thanks in advance,

Krimo

[Non-text portions of this message have been removed]

Re: Steiner questionne

2004-02-07 by John Loffink

You should check the archives for my Steiner VCF notes. It is not a matter
of simply "stuffing" the PCB irrespective of the revision.

John Loffink
The Microtonal Synthesis Web Site
http://www.microtonal-synthesis.com
The Wavemakers Synthesizer Web Site
http://www.wavemakers-synth.com

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> -----Original Message-----
> From: Krimo [mailto:krimo@...]
> Sent: Saturday, February 07, 2004 5:13 AM
>
> Hi all,
>
> Doing Oakley SVF and CGS Steiner VCF this weekend. Got a few questions
> about the notes/modifications, mainly because I can't figure out
> difference between "Rev 1" and "first and second run" (I think second
> run isn't necessarily the same as Rev1?)
>
> -Is it correct that input elec's polarities are all correct on the rev 1
> pcb?
>
> -Is it correct that the 10 uF elec between output transistors and input
> of the op amp buffer still has to be installed backwards on the rev 1
> pcb?
>
> -Is it correct that all the changes suggested by Nyle Steiner are
> processed on the rev 1 pcb and that I can just "stuff away" except for
> last question?
>
> Thanks in advance,
>
> Krimo
>
>

Re: Steiner questionne

2004-02-07 by sasami@hotkey.net.au

You can stuff the Rev 1 board exactly as it is. It is correct.

Show quoted textHide quoted text

>> Doing Oakley SVF and CGS Steiner VCF this weekend. Got a few questions
>> about the notes/modifications, mainly because I can't figure out
>> difference between "Rev 1" and "first and second run" (I think second
>> run isn't necessarily the same as Rev1?)

The first run was the prototype run - only 10 boards. The second run dealt
with some minor errors. Not many of these were made either. Rev 1 covered
more errors and Nyle's suggestions, and is the bulk of the PCBs that have
been made.

>> -Is it correct that input elec's polarities are all correct on the rev 1
>> pcb?

yes.

>> -Is it correct that the 10 uF elec between output transistors and input
>> of the op amp buffer still has to be installed backwards on the rev 1
>> pcb?

No. The 10 uF in question was replaced by a 1uF in Nyle's revision. The 1uF
is the correct way on the PCB.

>> -Is it correct that all the changes suggested by Nyle Steiner are
>> processed on the rev 1 pcb and that I can just "stuff away" except for
>> last question?

Re: Steiner questionne

2004-02-07 by Krimo

"To stuff or not to stuff. that is the question", or was it: "Stuff
first ask questions later" :-)

Thanx for the answers John and Ken!

I'll first try the original design and if I find any pot range trouble
I'll try Johns adaptions.

Just found out my Wima 2n2's don't fit next to each other, bummer.

Will let everyone know how it works out.

Krimo

-----Original Message-----
From: sasami@... [mailto:sasami@...]
Sent: zaterdag 7 februari 2004 22:45
To: cgs_synth@yahoogroups.com
Subject: RE: [cgs_synth] Steiner questionne

You can stuff the Rev 1 board exactly as it is. It is correct.

Show quoted textHide quoted text

>> Doing Oakley SVF and CGS Steiner VCF this weekend. Got a few

questions

>> about the notes/modifications, mainly because I can't figure out
>> difference between "Rev 1" and "first and second run" (I think second
>> run isn't necessarily the same as Rev1?)

The first run was the prototype run - only 10 boards. The second run
dealt
with some minor errors. Not many of these were made either. Rev 1
covered
more errors and Nyle's suggestions, and is the bulk of the PCBs that
have
been made.

>> -Is it correct that input elec's polarities are all correct on the

rev 1

>> pcb?

yes.

>> -Is it correct that the 10 uF elec between output transistors and

input

>> of the op amp buffer still has to be installed backwards on the rev 1
>> pcb?

No. The 10 uF in question was replaced by a 1uF in Nyle's revision. The
1uF
is the correct way on the PCB.

>> -Is it correct that all the changes suggested by Nyle Steiner are
>> processed on the rev 1 pcb and that I can just "stuff away" except

for

>> last question?

just stuff away.

_______________________________________________________________________
Ken Stone sasami@...
Modular Synth PCBs for sale <http://www.blaze.net.au/~sasami/synth/>
Australian Miniature Horses & Ponies <http://www.blaze.net.au/~sasami/>

See the following URLS for the CGS Modular Synth home page:
Main: http://www.cgs.synth.net/
Secondary: http://otherunicorn.0catch.com/synth/

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Steiner questionne

Steiner questionne

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