Enclosure not stated · 4 knobs
Catalinbread Epoch BiasVerified
Based on the Catalinbread Epoch Bias· 2 other boards clone it
From the post
Schematic is avaiable HERE.
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 Dirtbox Layouts. No KiCad fragment has been drawn for this circuit yet.
Parts list 33 rows
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Check before you build · 1 value the reader of this layout was not sure of
- 27uF electrolytic at column 7, rows D-F: printed clearly, unusual value
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 12 | ||||
| ×5 | 100K | 100k | read from the layout by eye | |
| ×1 | 820Ω | 820 | read from the layout by eye | |
| ×1 | 1M | 1M | read from the layout by eye | |
| ×2 | 100Ω | 100 | read from the layout by eye | |
| ×3 | 2.2M | 2.2M | read from the layout by eye | |
| ×2 | 22K | 22k | read from the layout by eye | |
| ×1 | 47K | 47k | read from the layout by eye | |
| ×1 | 510Ω | 510 | read from the layout by eye | |
| ×1 | 300K | 300k | read from the layout by eye | |
| ×1 | 39K | 39k | read from the layout by eye | |
| ×1 | 5.1K | 5.1k | read from the layout by eye | |
| ×1 | 68K | 68k | read from the layout by eye | |
| Capacitors 11 | ||||
| ×1 | 15pF | 15p | read from the layout by eye | |
| ×1 | 220pF | 220p | read from the layout by eye | |
| ×1 | 470pF | 470p | read from the layout by eye | |
| ×1 | 1nF | 1n | read from the layout by eye | |
| ×1 | 22nF | 22n | read from the layout by eye | |
| ×1 | 33nF | 33n | read from the layout by eye | |
| ×3 | 100nF | 100n | read from the layout by eye | |
| ×5 | 10uF | 10u | electrolytic; read from the layout by eye | |
| ×1 | 27uF | 27u | electrolytic; read from the layout by eye | |
| ×1 | 47uF | 47u | electrolytic; read from the layout by eye | |
| ×1 | 220uF | 220u | electrolytic; read from the layout by eye | |
| Diodes 3 | ||||
| ×4 | BAT46 | BAT46 | D1-D4; read from the layout by eye | |
| D5 | 1N4748A | 1N4748A / 22V | 22v Zener; read from the layout by eye | |
| D6 | 1N5817 | 1N5817 | read from the layout by eye | |
| Transistors 2 | ||||
| Q1 | 2N5457 | 2N5457 | JFET; read from the layout by eye | |
| Q2 | MPSA18 | MPSA18 | read from the layout by eye | |
| ICs 1 | ||||
| IC1 | LT1054 | LT1054 | read from the layout by eye | |
| Potentiometers 4 | ||||
| Boost | C10K | C10k | Potentiometer | read from the layout by eye |
| Bias | C5K | C5k | Potentiometer | read from the layout by eye |
| Filter | B25K | B25k | Potentiometer | read from the layout by eye |
| Preamp | A500K | A500k | Potentiometer | read from the layout by eye |
Other boards based on the Catalinbread Epoch Bias
- Epoch Bias PCBWay: Glory to Ukraine
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