Enclosure not stated · 2 knobs
Jen KPS-900 Phase Shifter
Based on the Jen KPS-900 Phase Shifter
- Category
- Vibrato / Chorus
- Build
- Vero· 21×22· 25 cuts, 12 links
- Layout
- Unverified · no build reported at Dirtbox Layouts yet
- Tags
- Jen, Modulation, Phaser
From the post
Similar to MXR 45 phaser but the pesky J FETs is replaced by a CD4007 chip so no transistor matching is required. Schematic 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 20 rows
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Check before you build · 2 values the reader of this layout was not sure of
- R3 (column 6, rows B-E): no value on the part; entered as 220K from the legend line '220k is stock value', which follows the R3 note but could be read as referring to the 220K trimmer
- Speed pot: legend prints '500k (C?)', the taper is the layout author's guess
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 8 | ||||
| ×9 | 10K | 10k | read from the layout by eye | |
| ×4 | 150K | 150k | read from the layout by eye | |
| ×4 | 470K | 470k | read from the layout by eye | |
| ×2 | 15K | 15k | read from the layout by eye | |
| ×2 | 1M | 1M | read from the layout by eye | |
| ×1 | 1K | 1k | read from the layout by eye | |
| ×1 | 100K | 100k | read from the layout by eye | |
| R3 | 220K | 220k | value not printed on the part; legend: Try 15k for more output, 220k is stock value; read from the layout by eye | |
| Capacitors 5 | ||||
| ×3 | 10nF | 10n | read from the layout by eye | |
| ×3 | 47nF | 47n | read from the layout by eye | |
| ×1 | 4.7uF | 4.7u | electrolytic; 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 2 | ||||
| D1 | 4.7V Zener | 4V7 | read from the layout by eye | |
| D2 | 1N5817 | 1N5817 | read from the layout by eye | |
| ICs 2 | ||||
| IC1 | MC3404 | MC3404 | Try LM324, LM348 etc.; read from the layout by eye | |
| IC2 | CD4007 | CD4007 | read from the layout by eye | |
| Potentiometers 2 | ||||
| Speed | C500K | C500k | Potentiometer | legend: 500k (C?); read from the layout by eye |
| Intensity | B1M | B1M | Potentiometer | read from the layout by eye |
| Trimmers 1 | ||||
| ×1 | 220K | 220k | read from the layout by eye | |