My friend ask me for creating of printed circuit board for a guitar booster. It is not my construction but circuit is from some old journal Amaterske radio. Unfortunately I didn't know author of this construction. Original circuit use germanium and silicon transistors from TESLA production. Circuit is designed for built-in to the guitar.
Printed circuit board is single-sided without any wire-wrap. It can be created in amateur condition, but if is not used solder-mask, that soldering of wires is a little complicated around ground planes.
Transistors KC507 can be replaced with BC546. With a replacement of germanium transistor OC or GC I am not sure if will be satisfying silicon transistor BC556. Other components are commonly available.
|name||value and type||quantity|
|P1||50k/N linear potentiometer||1x|
|P2||50k/G logarithmic potentiometer||1x|
|P3||1M trimmer type 64Y||1x|
|C1||100nF/63V foil RM5||1x|
|C2||33nF/63V foil RM5||1x|
|C3, C4||220nF/63V foil RM7.5||2x|
|C5||1nF/63V foil RM5||1x|
|C6||10uF/50V electrolytic RM2||1x|
|C7||47uF/50V electrolytic RM2.5||1x|
|Q1, Q2||KC507 or similar (BC546) silicone transistor||2x|
|Q3||OC..., GC... germanium transistor||1x|
|J1-J6||Faston in to the PCB||6x|
Until now I haven't information how circuit works.