Dual four-quadrant multiplier with VC Offset

This unit does an analog multiplication of two signal (A and B) and add an offset (C).

Signal B has a attenuverter that will multiply by -2 to 2 while Offset has a -1 to 1 attenuverter (unity gain).
B and C inputs are normalized to 5v and 10v so A input can be processed just using the potentiometers.

The output of first block is normalized to second one so second output can act as master, to get (A1B1+C1) + (A2B2+C2)

It can act as a dual voltage controlled attenvuerter, dual ring modulator, dual VCA or four channel mixer.


  • 40 mA +12V
  • 40 mA -12V
  • 0 mA 5V
  • 30 mm deep
  • Ø 4.75 (4 Votes) Average Rating

Available as an assembled Module and as a DIY project.

This Module is currently available.

$157 submitted Feb 21st 2016, 08:36 by grahambrot | last Change Jun 1st 2017, 11:26 by FG-Modular

Date Region Description Price Seller
USAThe overall condition of this *Befaco A*B+C* is *like new* Fresh DIY build...$90.00sceledra View

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