Building Tubescreamer. Layout/Schematic Help.

[Seraphblood]

Doing my own TS808 as a project for my EE Associates Program at school. I've basically got everything done here, I just wanted some more experienced eyes to look at my schematic/layout and verify I wired everything up correctly. My main question is the wiring of the DC Jack in regard to the Input and the Battery. Thanks.

Also, I can provide the .sch and .brd files if needed.


By null at 2011-01-26


By null at 2011-02-05

[PRR]

If you do the cheap-cheat of using the input jack as a power "switch", the jack MUST be Tip-Ring-Sleeve, not Tip-Sleeve.

(Unless you do something more complicated than classic pedals do.)

[Fender3D]

you should check the diodes area over the first op-amp. 

[Seraphblood]

In regard to the Input jack area, how could I set it up differently? This is my first time laying everything out myself, so if I did it wrong, or there is some way I can do it differently, I would really appreciate any advice I can get.

As far as the diodes I put a germanium 1N60 diode as the third one on that lattice, and I put the SPST so I can toggle it and throw the other 5 1N60s into series with that third one, to affect the clipping of the waveform. Just a small mod I read about.

[Fender3D]

Either the first or the 3rd diode, from ic, is useless.
Diodes will clip your signal according to their Vf, so whichever diode has the lower Vf will clip first, those with higher Vf won't have anything to clip... 
The same will apply with the switched set of diodes, the 2nd diode from ic will bypass them