Enclosure not stated · 3 knobs
Misc phaser
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Schematic
The schematic is the archived file. Open it at Experimentalists Anonymous, or browse its folder.
Parts list 25 rows
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Check before you build · 2 values the reader of this schematic was not sure of
- Phase stages: drawing shows 3 stages plus '3 more identical stages'; counted 6 stages, consistent with two TL074s (6 stages + 2 mixers)
- 15pF/30pF: printed with a µ-like glyph but are compensation caps in pF
| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 9 | ||||
| ×19 | 10K | 10k | 3 per phase stage x6, plus 5534 feedback; read from the schematic by eye | |
| ×7 | 1K | 1k | 1 per phase stage x6, plus LFO; read from the schematic by eye | |
| ×13 | 100K | 100k | 2 per phase stage x6, plus Manual bias to -V; read from the schematic by eye | |
| ×3 | 33K | 33k | input, and two on the LFO offset trim; read from the schematic by eye | |
| ×5 | 47K | 47k | four in the A/B output mixers, one in the LFO; read from the schematic by eye | |
| ×4 | 150K | 150k | three in the output mixers, one LFO integrator input; read from the schematic by eye | |
| ×2 | 150Ω | 150 | A and B outputs; read from the schematic by eye | |
| ×1 | 330Ω | 330 | below Rate pot; read from the schematic by eye | |
| ×1 | 1.5K | 1.5k | 1/2W, LED dropper; read from the schematic by eye | |
| Capacitors 5 | ||||
| ×3 | 15pF | 15p | drawn '15µf', clearly pF: 5534 and both output mixer feedback; read from the schematic by eye | |
| ×1 | 30pF | 30p | drawn '30µf', 5534 compensation pF; read from the schematic by eye | |
| ×18 | .1uF | 100n | 2 per phase stage x6, plus 6 supply decoupling discs; read from the schematic by eye | |
| ×1 | 10uF | 10u | non-polar, LFO integrator, drawn '10 NP'; read from the schematic by eye | |
| ×2 | 1000uF | 1m | 25V, supply filter; read from the schematic by eye | |
| Diodes 1 | ||||
| ×1 | bridge rectifier | BRIDGE RECTIFIER | full wave bridge, no part number given; read from the schematic by eye | |
| Transistors 1 | ||||
| ×6 | 2N5457 | 2N5457 | JFET, one per phase stage (2 drawn plus 3 more identical stages plus final stage); read from the schematic by eye | |
| ICs 3 | ||||
| ×1 | 5534 | 5534 | input stage; read from the schematic by eye | |
| ×2 | TL074 | TL074 | six phase stages and two output mixers; read from the schematic by eye | |
| ×1 | 1458 | 1458 | LFO (Schmitt and integrator); read from the schematic by eye | |
| Potentiometers 3 | ||||
| Depth | B10K | B10k | Potentiometer | drawn 10K LIN; read from the schematic by eye |
| Rate | A10K | A10k | Potentiometer | drawn 10K LOG; read from the schematic by eye |
| Manual | B10K | B10k | Potentiometer | drawn 10K LIN; read from the schematic by eye |
| Trimmers 1 | ||||
| ×1 | 10K | 10k | LFO offset trim; read from the schematic by eye | |
| Switches 1 | ||||
| ×1 | SPDT | SPDT | Auto/Man; read from the schematic by eye | |
| LEDs 1 | ||||
| ×1 | LED | LED | power indicator; read from the schematic by eye | |