Saturday, 18 July 2015

Kilpatrick Phenol & NLC Divine CMOS

This circuit uses some good old CMOS 4000 chips. To be specific they are 4070s although
the logic chip can also be a 4081, 4077 or a 4001.
[The CD4070 contain four independent (XOR) Exclusive-OR gates].
I understand that Andrew F is a fan of  "Lunetta Synths".

The module takes two input signals and divides them down by /2, /4, /8 & /16.

It also ring modulates the two signals and all of their divisions (similar to the ring mods in the Korg MS-20 and ARP Odyssey). All of these signals can then be mixed to create the output waveform.

This is a early video of one in action with some Serge gear:

There is a Euro version of this and I think Andrew F of NLC is still selling DIY PCBs for this module.

Below are some videos of the Divine CMOS with a Phenol from Kilpatrick.
I'm dividing the harmonics from VCOs 1 & 2.

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