Trotsky Drive Guitar Pedal

Trotsky Drive  Overdrive Pedal

Trotsky Drive
Overdrive Pedal

I completed my first Guitar Pedal based on a popular circuit called the Trotsky Drive. It is a single transistor Overdrive circuit to boost the output of the guitar signal into the clipping region for some distortion. The circuit initially uses a Vintage Transistor from Russia called a KT312 which is a NPN transistor. I did not have this transistor but I did have a 2N3566 button head transistor that works very nicely. I tried some traditional 2N2222 but was not impressed, so I left the 2N3566 in. I have a transistor base that you can take out and plug in other transistors to experiment. Initially I struggled with the wiring for the pedal switch as I was wiring it backwards to the jacks but one I got that sorted out the rest was successful. Certainly my pedal is less refined than the ones found in this site, but for a first attempt at a pedal project I was happy.

IMG_20151127_180207 IMG_20151127_175615   IMG_20151127_180138One aspect of this pedal is the main transistor socket that is in the center of this image. I can interchange transistors to get different natures in gain.





In this image, a button headIMG_20151127_175719transiIMG_20151127_180119stor is installed.

The switch on the side is a bright switch and this really has an effect that makes the tone quite a bit more crisp.




Here is a image of the transistor that I am using. A 2N3566. Looks like a little alien space ship.





I have the hood to the LED off and above that the gain and tone controls.






Another image of the 2N3566 but any number of transistors can be used.

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