Enclosure not stated · 3 knobs
The Photon BuzzardVerified
Based on the Photon Buzzard
From the post
I stumbled across this over on DIYstompboxes. It was designed by David Edgar and it's kind of based on the Fuzz Face circuit, but with a lot of tweaks. Below is his schematic and notes on biasing and transistor selection. I've added the usual polarity protection and power filtering and drawn the layout for on-board pots if you so choose.
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 Effects Layouts (blog). No KiCad fragment has been drawn for this circuit yet.
Parts list 18 rows
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Check before you build · 2 values the reader of this layout was not sure of
- Q1, Q2 and D1: the legend gives only a type (high gain NPN silicon; NPN germanium or silicon; germanium), no part number
- Phase pot 20K Lin: printed clearly, unusual value
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 6 | ||||
| ×2 | 10K | 10k | read from the layout by eye | |
| ×1 | 1K | 1k | read from the layout by eye | |
| ×1 | 12K | 12k | read from the layout by eye | |
| ×1 | 22K | 22k | read from the layout by eye | |
| ×1 | 1M | 1M | read from the layout by eye | |
| ×1 | 100Ω | 100 | read from the layout by eye | |
| Capacitors 4 | ||||
| ×1 | 220nF | 220n | read from the layout by eye | |
| ×1 | 6.8nF | 6.8n | read from the layout by eye | |
| ×2 | 47uF | 47u | electrolytic; read from the layout by eye | |
| ×1 | 1uF | 1u | electrolytic; read from the layout by eye | |
| Diodes 2 | ||||
| D1 | ? | ? | value not given; legend: Germanium; read from the layout by eye | |
| D2 | 1N4001 | 1N4001 | read from the layout by eye | |
| Transistors 2 | ||||
| Q1 | ? | ? | value not given; legend: High gain NPN Silicon; read from the layout by eye | |
| Q2 | ? | ? | value not given; legend: NPN Germanium or Silicon; read from the layout by eye | |
| Potentiometers 3 | ||||
| Shape | B10K | B10k | Potentiometer | read from the layout by eye |
| Phase | B20K | B20k | Potentiometer | read from the layout by eye |
| Volume | A100K | A100k | Potentiometer | read from the layout by eye |
| Trimmers 1 | ||||
| ×1 | 100K | 100k | read from the layout by eye | |