Ring Mod - nlc build notes

 These are some build notes for the Ring Mod module by Nonlinear circuits

 

This is a really easy module to build.

Great for a beginner.

Links

+ Wiki

+ BOM

This module was developed from a paper by Tom Oberheim, presented at the 

Audio Engineering Society 1970 convention – A “Ring Modulator” 

Device for the Performing Musician.

The paper discusses the various types of ring modulators and states the transformers 

in the well-known diode ring modulator

 can be replaced with transistors. From pg.2 – The transistors serve as phase inverters 

for driving opposite sides of the ring. 

The differential amplifier amplifies the sum and difference frequencies while 

rejecting the signal and the carrier.

schottky

opamps

transistors

resistors

 caps - just 2

Such a simple circuit !!!

four LL 4148

100k pots

all linear

kobiconn style sockets

You're done

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