MOTM

Wow! It worked perfect first time! Need to adjust 1 resistor, and the
correct caps are arriving Wednesday
(special dielectric for low drift and low dissapation factor).

Low end without a "driving" CV (just turning the panel pot) is about 1 cycle
in 6 minutes. High end
is about 12Hz.

You "drive" it much lower and higer with external CV (over about a 12 octave
range). The low end
will be determined by the cap, but probably on the order of 1 cycle in 20
minutes (!!?!). The high end is about
2Khz.

It is 1V/oct *untrimmed*. But is is temperature compensated.

Although it has a zillion parts (80 resistors, 14 transistors, 7 ICs) it
seemed to go rather quickly. PCB
stuffing was about 2 hours.

SSM2040 clone 4-pole LPF is in transit from JH. Will report when it arrives
in about 1 week. SPICE plots look promising.
And we added a neat feature that needs study, but will add a switchable
"PHATTNESS" to it if it will work.

Paul S.

OK I messed up the silkscreen on 1 op amp (labelled 4556, it really is a
OP275).

But that is because I noticed the 4556 not drive the saw output when the
power supply
came up slower than the LFO rate! The OP-275 works like a charm.

Analog real-world weirdness strikes again!

Paul S.