Enclosure not stated · 3 knobs
Roger Mayer Voodoo-1
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- Fuzz· Fuzz and Fuzzy Noisemakers
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- Fuzz and Fuzzy Noisemakers
Schematic
The schematic is the archived file. Open it at Experimentalists Anonymous, or browse its folder.
Parts list 27 rows
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Check before you build · 2 values the reader of this schematic was not sure of
- 70k: unusual value, glyph could be 10k in this bitmap font
- 100 caps: no unit drawn, likely 100nF but could be pF
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 15 | ||||
| ×1 | 150 | 150 | no designator; supply series resistor; read from the schematic by eye | |
| ×1 | 1.6M | 1.6M | no designator; input bias from output feedback line; read from the schematic by eye | |
| ×3 | 2.2M | 2.2M | no designators; input pulldown, Q1 base bias, output pulldown; read from the schematic by eye | |
| ×1 | 680k | 680k | no designator; Q1 base to ground; read from the schematic by eye | |
| ×2 | 47k | 47k | no designators; Q1 collector/bias divider; read from the schematic by eye | |
| ×1 | 22k | 22k | no designator; Q1 emitter; read from the schematic by eye | |
| ×1 | 150k | 150k | no designator; op amp feedback; read from the schematic by eye | |
| ×1 | 39 | 39 | no designator; gain leg in series with Gain pot; read from the schematic by eye | |
| ×1 | 70k | 70k | no designator; after op amp output cap; read from the schematic by eye | |
| ×1 | 1.5k | 1.5k | no designator; read from the schematic by eye | |
| ×2 | 39k | 39k | no designators; tone network; read from the schematic by eye | |
| ×1 | 12k | 12k | no designator; tone network; read from the schematic by eye | |
| ×1 | 820k | 820k | no designator; Q2 base bias; read from the schematic by eye | |
| ×1 | 1M | 1M | no designator; Q2 base to ground; read from the schematic by eye | |
| ×1 | 10k | 10k | no designator; Q2 emitter; read from the schematic by eye | |
| Capacitors 5 | ||||
| ×3 | 0.1uF | 100n | no designators; drawn '0.1': input, output-stage input and output coupling; read from the schematic by eye | |
| ×2 | 22uF | 22u | no designators; drawn '22', electrolytic: supply filter and bias filter; read from the schematic by eye | |
| ×1 | 22pf | 22p | no designator; LM308 compensation pins 1-8; read from the schematic by eye | |
| ×2 | 2.2uF | 2.2u | no designators; drawn '2.2', electrolytic: op amp output coupling and gain leg; read from the schematic by eye | |
| ×3 | ? | ? | drawn '100' with no unit; no designators; drawn '100' with no unit (series tone cap, shunt cap, cap under 12k); likely nF; read from the schematic by eye | |
| Diodes 2 | ||||
| ×1 | Diode | DIODE | no part number given; supply polarity protection; read from the schematic by eye | |
| ×4 | Diode | DIODE | no part number given; clipping diodes, two series pairs anti-parallel to ground; read from the schematic by eye | |
| Transistors 1 | ||||
| ×2 | BC549C | BC549C | NPN; marked 'C549C PH21' (probably BC549); input and output transistor; read from the schematic by eye | |
| ICs 1 | ||||
| ×1 | LM308N | LM308N | op amp; read from the schematic by eye | |
| Potentiometers 3 | ||||
| Gain | ? | ? | Potentiometer | pot values unknown per drawing; read from the schematic by eye |
| Tone | ? | ? | Potentiometer | pot values unknown per drawing; read from the schematic by eye |
| Output | ? | ? | Potentiometer | pot values unknown per drawing; read from the schematic by eye |