MATRIXSYNTH: Noise Reap Swiss Army Mixer ~ Eurorack Module ~ Attenuator/Inverter/Diff amp

Wednesday, May 25, 2016

Noise Reap Swiss Army Mixer ~ Eurorack Module ~ Attenuator/Inverter/Diff amp


via this auction

"DC coupled Inputs 1-4 are summed and sent to the mix out. If a cable is plugged into outs 1-3, that respective channel will be pulled from the mix and become buffered attenuator.

There are three differential amplifiers outputs at the bottom of the module. A simple formula for the differential outputs is this: [diff output] = [ input 1 voltage ] + [ - input 2 voltage ]. Notice that the inputs are added together but the second input is also inverted. As an example, a 5 volt gate at both inputs 1 & 2 will equal 0 volts out of the diff output. Diff 3-4 works the same way, with input 4 being the inverted input. The diff outputs can also be used as simple inverters for channels 2 & 4.

The "diff-diff" is a differential amplifier for the two diff outputs (diff 1-2 is the inverted input to the diff-diff).

Specifications:

Euroroack 8hp
20mA @ +12V
20mA @ -12V
skiff friendly
List of basic functions:

mixer/summer
voltage offseting
linear attenuators
inverter
differntial amplifier"

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