1590B · 3 knobs
Crowther Audio '03 Hot CakeVerified
Based on the Crowther '03 Hot Cake· 1 other board clones it
From the post
I laid out the original 1977 Hot Cake a while back, but never got around to doing the modern one that came out in 2003. So here's the newer one. I ignored the original relay bypass switch and the polarity protection diode could be replaced with a 1N4001 or similar. The original 1N5238 is an 8.2v zener. It's laid out for board mounted pots as usual, and should be an easy fit in a 1590B. Here's the schematic for reference. There's also now a fabricated board for this circuit available in the store—the Crempog.
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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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 6 | ||||
| ×2 | 220Ω | 220 | read from the layout by eye | |
| ×1 | 1K | 1k | read from the layout by eye | |
| ×3 | 10K | 10k | read from the layout by eye | |
| ×1 | 82K | 82k | read from the layout by eye | |
| ×2 | 100K | 100k | read from the layout by eye | |
| ×2 | 1M | 1M | read from the layout by eye | |
| Capacitors 7 | ||||
| ×1 | 470pF | 470p | read from the layout by eye | |
| ×1 | 10nF | 10n | read from the layout by eye | |
| ×1 | 22nF | 22n | read from the layout by eye | |
| ×1 | 56nF | 56n | read from the layout by eye | |
| ×1 | 82nF | 82n | read from the layout by eye | |
| ×2 | 10uF | 10u | electrolytic; read from the layout by eye | |
| ×1 | 100uF | 100u | electrolytic; read from the layout by eye | |
| Diodes 1 | ||||
| ×1 | 1N5238 | 1N5238 / 8V7 | printed 5238; zener; read from the layout by eye | |
| ICs 1 | ||||
| ×1 | TL071 | TL071 | read from the layout by eye | |
| Potentiometers 3 | ||||
| Drive | C50K | C50k | Potentiometer | read from the layout by eye |
| Presence | B25K | B25k | Potentiometer | legend: B25k or B50k; labelled Tone on the perfboard view; read from the layout by eye |
| Level | A50K | A50k | Potentiometer | read from the layout by eye |
Other boards based on the Crowther '03 Hot Cake
- Hot Waffle PCB Guitar Mania · 1590B · €9.90