Enclosure not stated · 4 knobs
Epoch Bias
Based on the Catalinbread Epoch Bias· 2 other boards clone it
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- Tags
- Catalinbread, Catalinbread, Epoch Bias
Schematic
The schematic image is on the project page. Open it at PCBWay.
Parts list 34 rows
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Check before you build · 1 value the reader of this schematic was not sure of
- Filter and Preamp could be trimmers rather than panel knobs
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 13 | ||||
| ×5 | 100k | 100k | read from the schematic by eye | |
| ×3 | 2M2 | 2.2M | read from the schematic by eye | |
| ×2 | 22k | 22k | read from the schematic by eye | |
| ×2 | 100 | 100 | read from the schematic by eye | |
| ×1 | 1M | 1M | read from the schematic by eye | |
| ×1 | 820 | 820 | read from the schematic by eye | |
| ×1 | 510 | 510 | read from the schematic by eye | |
| ×1 | 47k | 47k | read from the schematic by eye | |
| ×1 | 39k | 39k | read from the schematic by eye | |
| ×1 | 300k | 300k | read from the schematic by eye | |
| ×1 | 68k | 68k | read from the schematic by eye | |
| ×1 | 5k1 | 5.1k | read from the schematic by eye | |
| ×1 | 4k7 | 4.7k | read from the schematic by eye | |
| Capacitors 11 | ||||
| ×3 | 100n | 100n | read from the schematic by eye | |
| ×5 | 10u | 10u | four in the LT1054 charge pump, one at the output; read from the schematic by eye | |
| ×1 | 220p | 220p | read from the schematic by eye | |
| ×1 | 22n | 22n | read from the schematic by eye | |
| ×1 | 27u | 27u | read from the schematic by eye | |
| ×1 | 1n | 1n | read from the schematic by eye | |
| ×1 | 33n | 33n | read from the schematic by eye | |
| ×1 | 470p | 470p | read from the schematic by eye | |
| ×1 | 15p | 15p | read from the schematic by eye | |
| ×1 | 220u | 220u | read from the schematic by eye | |
| ×1 | 47u | 47u | read from the schematic by eye | |
| Diodes 3 | ||||
| ×4 | BAT46 | BAT46 | read from the schematic by eye | |
| ×1 | 1N5817 | 1N5817 | read from the schematic by eye | |
| ×1 | 1N4748 | 1N4748 / 22V | zener on the pumped supply; read from the schematic by eye | |
| Transistors 2 | ||||
| ×1 | 2N5457 | 2N5457 | read from the schematic by eye | |
| ×1 | MPSA18 | MPSA18 | read from the schematic by eye | |
| ICs 1 | ||||
| ×1 | LT1054 | LT1054 | read from the schematic by eye | |
| Potentiometers 4 | ||||
| Bias | C5k | C5k | Potentiometer | read from the schematic by eye |
| Boost | C10k | C10k | Potentiometer | read from the schematic by eye |
| Filter | B25k | B25k | Potentiometer | may be an internal trimmer on the original; drawn as a named pot; read from the schematic by eye |
| Preamp | A500k | A500k | Potentiometer | may be an internal trimmer on the original; drawn as a named pot; read from the schematic by eye |
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