Modular Synth Panels

On 3/1/08, Scott Deyo put forth:
>I'm planning on a panel, too.
>I'll take a look at Jan's FPE file.
>Are we wanting a double 'Bug (doppelbug?) w/ ring mod outputs? I forget...
>Or shall we stick to singles, to make assembly easiest, and people
>can do external ring mod if they wish?

I have no idea, since I'm on a Mac and cannot read FPE files.

Also, I think Stooge Moe drew up an MOTM panel for a wogglebug, bitd.
You might want to ask him about it.

More also, while I'm typing, are there any panels for an envelope
follower??  I'm looking for somethimng simple.  While I can use the
rectifier wavetable in my mini-wave, and run that output through an
MOTM-820, I would rather not tie up two awesome modules for such a
basic function.  I also added an env out to my modded time machine,
but it's not adjustable, and ties up the TM.

On 3/1/08, xamboldt put forth:
>I'm no expert, but isn't that an inverting voltage follower, not a
>comparator? I thought comparators have either no feedback, or a tiny
>amount (hysteresis).

An inverting voltage follower uses the inverting input and negative feedback.

While, afaik, an ideal op-amp without feedback or any noise at its
inputs should act like a comparator.  Since that situation does not
exist in reality, positive feedback is added.  If a resistor is
added, a voltage divider creates two threshold voltages, resulting in
hysteresis.

On 3/1/08, Grant Richter put forth:
>
>I do NOT have a Wogglebug #3 board to test this on. But a quick and
>non-binding guess would be:
>
>To convert to 0-5 CV out and +/-5 V audio out. Do the following.
>
>Removing R30 should change J1, J4 and J7 to 0-5 volts.
>
>Place a 1uF non-polarized cap in series with J2, J5 and J6 (Mouser
>PT# 140-NPRL50V1.0-RC
>is an example) to produce +/- 5 V audio.
>
>J3 can stay the same with less range than in a 0-10V system.

Thanks :)