Enclosure not stated · 2 knobs
Harmonic PercolatorVerified
Based on the Interfax Harmonic Percolator· 22 other boards clone it
Schematic
This is a board layout, a drawing of where each part goes, and the post may link the schematic it was drawn from. Open the layout at Tagboard Effects. No KiCad fragment has been drawn for this circuit yet.
Parts list 15 rows
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Check before you build · 2 values the reader of this layout was not sure of
- Blue three-lug off-board part at the right is unlabelled; entered as an SPDT toggle on its appearance
- 100p at the top left is drawn faint/translucent, value reads 100p
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 5 | ||||
| ×1 | 220K | 220k | read from the layout by eye | |
| ×1 | 20K | 20k | read from the layout by eye | |
| ×1 | 4K7 | 4.7k | read from the layout by eye | |
| ×1 | 750K | 750k | read from the layout by eye | |
| ×1 | 91K | 91k | read from the layout by eye | |
| Capacitors 4 | ||||
| ×1 | 47nF | 47n | read from the layout by eye | |
| ×2 | 100nF | 100n | read from the layout by eye | |
| ×1 | 100p | 100p | read from the layout by eye | |
| ×1 | 47uF | 47u | electrolytic; read from the layout by eye | |
| Diodes 1 | ||||
| ×2 | Ge | GE | germanium, type not given; read from the layout by eye | |
| Transistors 2 | ||||
| Q1 | 2N404A | 2N404A | PNP germanium; read from the layout by eye | |
| Q2 | 2N3565 | 2N3565 | NPN silicon; read from the layout by eye | |
| Potentiometers 2 | ||||
| Balance | A50K | A50k | Potentiometer | read from the layout by eye |
| Harmonics | A100K | A100k | Potentiometer | read from the layout by eye |
| Switches 1 | ||||
| Switch | SPDT | SPDT | toggle, unlabelled in the drawing; read from the layout by eye | |
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