This is a collection of stuff that I did a long time ago. It is going to take a while to fill this in, because as I found out this first night, scanning documents is not easy.
This is a circuit that I
had originally wanted to sell as a kit. Problem was, by the time
I finally got around to finalizing it, around 1983, I found out that
had discontinued the 4700 series synth, which took the wind out of my
real fast. It never went beyound a breadboard test unit that I
I should still have that around here someplace. If I find it, I
post a photo of that too.
Using the Ideal Diode
Analysis of CA3280
Distortion comparison 3280 vs 3080
Gm as a function of Diode Bias Current
Maximum Input Voltage vs Id for constant distortion
Current Sources for the CA3280
Voltage Controlled Amplifier
Voltage Controlled Glide
Sample and Hold Circuit
This first one is a memory/IO expander. I used to sell these. It was my biggest mover (which isn't saying much, I sold about 16 of these). It has 1K of extra RAM plus two 6522 VIA's for I/O and timer functions. As of this posting, I have two blank boards left. They are up for grabs.
Memory Expander for
8700 micro computer.
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