[sdiy] Tunnel-diode like waveshaper (new student project video)

David G. Dixon dixon at interchange.ubc.ca
Sun May 2 10:03:26 CEST 2010


Good stuff, Aaron!  Congrats to the student for a cool idea.

(Shouldn't you be in bed?  It's 1 am, for cryin' out loud!)

> The student wanted to try making a waveshaper based on tunnel diodes, but
> these seem hard to come by in a useful form, so he used a combination of
> JFETs and diodes and op amps to emulate the tunnel diode curve:
> 
> http://www.youtube.com/watch?v=CT9bYidL71A
> 
> There's a "wavefold" on the positive and negative sides, and the location
> of each one is separately adjustable with separate control voltages.
> 
> This was probably the most original project out of the bunch.
> 
> - Aaron
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