These are my build notes for the Nonlinear Circuits Diff-rect
Its a eurorack 1U tile format module.
My body is a temple.
Its a super simple circuit to build ... a 072 op-amp, two diodes, etc.
This circuit is a hybrid of two basic op amp ‘building blocks’ – a difference circuit and a rectifier.
A rectifier converts alternating current (AC), to direct current (DC). ... thus the diodes in the circuit.
The difference circuit is a voltage subtractor.. It uses a Op-amp to produce an output voltage proportional to the voltage difference of two input signals
Links
+ wiki
+ BOM
It is great for mixing audio and/or CV signals to get all kinds of unexpected and interesting results.
It has 2 inputs & 2 outs.
You can use it in lots of ways ... as a complex audio waveshaper, a gate or pulse generator, a CV shaper or to generally mess things up.
Those that build a lot of NLC modules will know this is one of Andrew's favorite circuits.
The diff-rect has appeared on the Neuron,
1050 mix/sequencer, triple Sloth, GENiE and 8 of them make up the Let's Splosh.
Here are Andrew's original notes from 2012/13
Opamps & diodes 1st
I'm using a 10R resistor for power protection
Using a 4.7K resistor for LED protection
Jacks
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You can find more NLC builds here.
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