125B · 2 knobs
Big Clang
Based on the Interfax Harmonic Percolator· 22 other boards clone it
From the vendor
The Big Clang Is an all silicon harmonic percolation device. An easy and relatively flexible build.
The parts list shows the first of several variant specs in the build document.
This project is based upon the Harmonic Percolator. The Big Clang was born out of my General distain of finicky Germanium Transistors. The original uses a germanium PNP transistor and a silicon NPN transistor. Not having proper testing equipment and not knowing other all silicon versions existed, I created the Big Clang. A relatively Small Parts count with Maximum Rock and roll. For best use with aluminum neck guitars.
Schematic
The schematic is in the vendor's build document. Open the build document. No KiCad fragment has been drawn for this circuit yet.
Parts list 22 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 7 | ||||
| R1 | 1M | 1M | ||
| R2 | 1k | 1k | ||
| R3 | 91k | 91k | ||
| R4 | 750k | 750k | ||
| R5 | 220k | 220k | ||
| R6 | 91k | 91k | ||
| R7 | 4k7 | 4.7k | ||
| Capacitors 6 | ||||
| C1 | 100p | 100p | Silver Mica | |
| C2 | 47n | 47n | Mylar | |
| C3 | 100n | 100n | ||
| C4 | 100n | 100n | Mylar | |
| C5 | 47uf | 47u | Tantalum | |
| C6 | 100uF | 100u | ||
| Diodes 5 | ||||
| D1 | Ge | GE | ||
| D2 | Ge | GE | ||
| D3 | Si | SI | ||
| D4 | Si | SI | ||
| D5 | 1n4001 | 1N4001 | ||
| Transistors 2 | ||||
| Q1 | 2n5088 | 2N5088 | ||
| Q2 | 2n5087 | 2N5087 | ||
| Potentiometers 2 | ||||
| HARMONIC | A50k | A50k | ||
| BALANCE | A50k | A50k | ||
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