1590B · 3 knobs
MXR Phase 45 moddedVerified
Based on the MXR Phase 45· 12 other boards clone it
From the post
Now Miro has verified the original, here's a modded version of the Phase 45 and offering a few useful addition such as external Bias and a Mix control, Phase 45 / Univibe 10:1 Ratio switch and a Rate LED. The switch is 2 position 4PDT but you could also split it and use 2 x 2 position DPDT which will then allow you to select the caps individually offering a little bit more versatility.
I actually managed to get this 2 columns smaller because of the removal of some components and others going on the switch instead of the board, so it will easily fit in a 1590B.
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 Tagboard Effects. No KiCad fragment has been drawn for this circuit yet.
Parts list 21 rows
Report a wrong parseGot parts in a drawer? See what you can build with them.
Check before you build · 1 value the reader of this layout was not sure of
- 4K1 lower right of the board (next to the 150K resistors): printed clearly, unusual value
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 9 | ||||
| ×11 | 10K | 10k | read from the layout by eye | |
| ×2 | 47K | 47k | read from the layout by eye | |
| ×5 | 150K | 150k | read from the layout by eye | |
| ×1 | 22K | 22k | read from the layout by eye | |
| ×3 | 470K | 470k | read from the layout by eye | |
| ×1 | 2K4 | 2.4k | read from the layout by eye | |
| ×2 | 1M | 1M | read from the layout by eye | |
| ×1 | 3M9 | 3.9M | read from the layout by eye | |
| ×1 | 4K1 | 4.1k | read from the layout by eye | |
| Capacitors 4 | ||||
| ×4 | 47n | 47n | 2 on the board, 2 on the switch; read from the layout by eye | |
| ×5 | 10n | 10n | 4 on the board, 1 on the switch; read from the layout by eye | |
| ×1 | 100n | 100n | on the switch; read from the layout by eye | |
| ×3 | 10u | 10u | electrolytic; read from the layout by eye | |
| Diodes 1 | ||||
| D1 | 5V1 zener | 5V1 | read from the layout by eye | |
| Transistors 2 | ||||
| Q1 | 2N5458 | 2N5458 | JFET; read from the layout by eye | |
| Q2 | 2N5458 | 2N5458 | JFET; read from the layout by eye | |
| ICs 1 | ||||
| ×2 | NE5532 | NE5532 | read from the layout by eye | |
| Potentiometers 3 | ||||
| Speed | B500K | B500k | Potentiometer | read from the layout by eye |
| Bias | B100K | B100k | Potentiometer | read from the layout by eye |
| Mix | B22K | B22k | Potentiometer | read from the layout by eye |
| Switches 1 | ||||
| Phase 45 / Univibe | 4PDT | 4PDT | 2 position; read from the layout by eye | |
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