This module consists of four triangle frequency doubling circuits. The circuit board normalizes the output of each doubling circuit to the input of the next so that it can easily be used to multiply frequency by 4, 8 or 16.

Other waveforms can be used instead of triangles but there will be more significant alterations of the output.

Demos, build documentation, drill guide, are available here.

Unfinished panels are drilled by hand in my garage, they are bare aluminum that may be scratched.  They are intended to be painted, etched or otherwise finished later.

Pre-Assembled Modules are built after the order comes in.  Build time can be a few days or a few weeks depending on what parts I have on hand.  When ordering, please leave a comment at checkout if you have preferences on what color(s) the panel is painted.