This is a library of perfboard and single-sided PCB effect layouts for guitar and bass. I'm not an electrical engineer by any stretch of the imagination, just a DIY'er who likes drawing layouts. It is meant for the hobbyist (so commercial use of any of these layout is not allowed without permission) and as a way to give back to the online DIY community.

Tuesday, April 16, 2019

Craig Anderton Tremolo

To say Craig Anderton's body of work is vast is probably an understatement. But within that body are several DIY classics, and this tremolo is no exception. This is a modified/updated version, specifically in the power section with a +/- 9v charge pump. The vactrol in the original is VTL5C1, but some combination of home rolled LDR/LED combo will probably work (you'll just have to experiment a bit). Schematic here. It'll be snug, but it should fit in a 1590B.


  1. Nice project. Thank you! Just realized this uses 3 inverters form the 4049 and Anterton's Tube Sound Fuzz uses 2. Maybe a fuzz tremolo...

    1. It's a cool idea, but I would try it on breadboard first. Since the 4049 in the trem is being used as the LFO, there might be some LFO leak into the remaining 2 inverters. YMMV

  2. David, There is wrong pins with 4049 Ube. Absolut no the same with that schem...1,2,3,4,5 legs go wrong, 1 have to go 9!I see we can change places 5,4 & 3,2 but 1 have to go 9

  3. verified, just connect 1 to 9 lug ube!

  4. Thanks, David, its realy good optical tremolo!