SergeModular

Here's how you make a toggle flip-flop. You just need an ASR and an
inverter.

toggle signal -> ASR pulse in
ASR output 2 -> inverter in
inverter out -> ASR sample in

Then any ASR output is your toggled output. (They alternate parity.)

However, as I posted before, you don't need a flip-flop in the first
place to turn a SEQ8 into a SEQ16!

The cool thing about this toggle flip-flop is that you can chain
multiple ones together to make a binary counter. With a dual ASR and a
BLOG, you can make a two-bit counter, and use it to turn, say, a
7-stage programmer into a 28-stage sequencer. However, it seems you
would also need three ACPRs - one to select A/B, one for C/D, and one
for (A/B) / (C/D). Or is there some other way to select cv signals?

Also, to make a conventional set-reset flip-flop, the module you really
want is the dual Schmitt trigger. Maybe there's some clever way to do
it without one, though, I don't know.

- Bob


--- In SergeModular@yahoogroups.com, "James R. Coplin" <moog@q...>
wrote:

> The bigger question in your mind is probably, "Why do I want a couple

of

> NAND gates anyhow?" The reason is that you can construct a flip-flop

from 2

> NAND gates. By feeding the outputs of the NAND gates into the input

of each

> other, a basic memory module is created. In particular I would like

to make

> a toggle flip-flop. This is a flip flop that when pulsed outputs a

constant

> voltage (high or low, 1 or 0) until it is pulsed again. If the steady

state

> is high then pulsing it makes it low. The usefulness is that it

*stays* high

> or low until pulsed again. If I can't figure out how to wire one of

these

> up, I'll have to get out the soldering iron and make a bunch of these

as I'm

> constantly wanting one for complex sequencer work!

---------------------------------------------
Robert A. Hearn
rah@...
http://www.swiss.ai.mit.edu/~bob/