1Ж24Б

Revisiting the CGS65 -- it has never really worked properly...

Resonant Filter Module

Part of the Elektor Resonant Filter Module... Got the wrong Pot's... So close to actually going and now it will be another week or so!

Not Teenagers Anymore...

Looking to build a complete metal can VCO in the not to distant future!

DSP coding

Started down the track of getting a VCO going. It has all sorts of strange modes that I have picked up from the Buchula 259 investigation that I started a while ago. Has some extra weirdness as well!

Moog 921B

Well here we go; my layout of a Moog 921B VCO is into the stuffing phase... There are rather a lot of wire links... there are also a LOT of trim pots on the board... what was Bob thinking? I think that a lot of them are really there to adjust the controls on the front panel so they agree with the readings on the knobs...

Eye Candy

Have this new (ancient) display for Forbin... it came from a B53 bomber via Texas...

Through the Zero Plane

Some excitement when I got the En129 (ElectroNotes TZVCO) to work. I had a few problems etching the board (see previous posts) and then I had a few problems getting it to work. I then found a few missing resistors from the schematic when I had copied it into the PCB program. Anyway now all is good except for a couple of resistors mounted on the bottom!

Here is the board:
The layout is reasonably tight but there are a few more links that I would have liked. I probably could have juggled around the opamps between the packages to get rid of a few but I was getting a bit fed up with it all by that stage...

This is the result of some very simplistic testing. Looks a bit like some of the photographs that I have seen for the scope outputs from the Teezer and the ZeroOscillator.

Might ask Bernie Hutchins if I can post the layout for press'n'peel to electro-music or somewhere...