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Cgs synth

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Message

Re: Sequential Switch Help Needed

2003-06-10 by sasami@hotkey.net.au

>First off, what would be the best way to incorporate pots at the
>inputs? What pot values would work best & what's the best way to wire
>each pot into the switch?

Input jack goes to CW end of pot (50k to 100k lin). CCW end of pot goes to
0V/gnd. Center of pot goes to input on PCB.

>Second, would it make sense to build the switch so that one had the
>option of routing in external signals to each of the inputs? If so,
>would it be possible to use the pots to set CV's if no jack was
>inserted, but adjust the input level when a jack was inserted?

Yes. Connect a positive voltage to the normalized connection of each jack.
Put at least 1k resistance between the +15V and the normalized connection.
You will probably get better control if you use a 100k resistor here if you
are using 100k pots. You will be sacrificing 1/2 of your range, but voltages
over 7.5 won't be much use anyway. Not this will only affect the normalized
connection. Full range will be possible when you plug something in.

>What's the Inhibit input do?

It disconnects ALL inputs for mthe output, sending the output to 0 volts.

>Also, I haven't seen a panel for this - I'll try to put one together.
>Here are the panel items I've identified:
>
>Inputs:
>Reset - Momentary Switch
>Reset In - jack
>Up/Down - Toggle
>Clock In - jack
>Inhibit - jack
>Mix In - jack
>In 1-8 - jacks
>Levels 1-8 - pots

>Output Jacks:
>Out
>Inverted Out
>Gate 1-8
>
>Flashy Lights
>Gate 1-8
>
>Any comments or suggestions on this?

also Up/Down jack.

Ken
_______________________________________________________________________
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/>

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