dual unipolar comparator logic

CMP is a utility module comparing two voltages. Dual channel. It performs the logic operation A>B=C in a unipolar fashion, thus giving about 0-11V outputs. A is your main input, B is normalled to +12V, and run through the attenuator knob, to set a threshold voltage where the output goes high.

This sort of logical operation can translate a saw or triangle VCO into a square wave with variable pulse-width. An LFO into a gate pattern, or a random CV sequence into a random gate pattern. Put in two LFOs and you get a swing clock pattern. Two VCOs and you get that metallic twang as they phase around.

It’s through-hole construction is very easy for DIY soldering. The opamp specified is a LM358, which is the cheapest way to get a 0V pushed output. Does not use the -12V rail, we’re clamped to 0 and +12V.

https://karltron.com/cmp/

• 5 mA +12V
• ? mA -12V
• ? mA 5V
• 20 mm Depth

Available as an assembled Module and as a DIY project.

This Module is currently available.