addac system addac208 comparator & rectifiers price : $175.00

a comparator is an electronic circuit that compares two voltages and switches its output to indicate which is larger. the comparator operates between -10 or +10v. the output is always -10v if below threshold and +10v if above threshold.

a rectifier is an electronic circuit that is used to transform ac signals to an equivalent dc signal while removing one of it's polarities, i.e. positive rectification excludes negative signals and vice-versa.

both sections can be used to change the shape of any waveform as well as it's harmonic content.

frontpanel:
1 comparator threshold knob
1 comparator jack output
2 comparator monitor led1 common signal jack input
4 rectificated outputs

features:
4hp totally analog module.
comparator with threshold knob
4 precision rectificated outputs:
positive half rectification
positive full rectification
negative half rectification
negative full rectification

extra features/ applications:
comparator can be used with vco's to create a square wave with pwm control
comparator can also be used with complex audio signals for a "fuzz" effect.
full rectification can be used to double a vco frequency.

specifications:
mechanical:
format: eurorack
width: 4 hp
depth: 2.5 cm

control voltage i/o:
cv inputs: ±10v
cv outputs: ±10v

electrical:
max current: 30ma
compatible with ±12v and ±15v power supplies
bus board cable: 8 × 2 idc (doepfer style) connector

download the users guide here.