125B · 2 knobs
From the vendor
Boss PH-1 Phaser with a simple mod to combat volume drop. Requires a quad of matched JFETS in order to phase.
Buy either the bare pcb or have it bundled with a matched quad of “Jay-Fetz” 5457’s. Either will come with a complimentary 3pdt footswitch pcb, assuming they’re in stock at the time of purchase.
For a limited time- when you buy the matched quad, you’ll get the pcb for the very low price of $3.
But wait, there’s more! OK, not really. I’ve just always wanted to say that!
Schematic
The schematic is in the vendor's build document. Open the build document. No KiCad fragment has been drawn for this circuit yet.
Parts list 59 rows
Report a wrong parse| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 32 | ||||
| R1 | 1k | 1k | ||
| R2 | 470k | 470k | ||
| R3 | 1k5 | 1.5k | ||
| R4 | 1k5 | 1.5k | ||
| R5 | 10k | 10k | ||
| R6 | 100k | 100k | ||
| R7 | 10k | 10k | ||
| R8 | 10k | 10k | ||
| R9 | 100k | 100k | ||
| R10 | 10k | 10k | ||
| R11 | 10k | 10k | ||
| R12 | 100k | 100k | ||
| R13 | 10k | 10k | ||
| R14 | 10k | 10k | ||
| R15 | 100k | 100k | ||
| R16 | 10k | 10k | ||
| R17 | 10k | 10k | ||
| R18 | 2M2 | 2.2M | ||
| R19 | 1M | 1M | ||
| R20 | 47k | 47k | ||
| R21 | 22k | 22k | ||
| R22 | 470R | 470 | ||
| R23 | 100k | 100k | ||
| R24 | 1k8 | 1.8k | ||
| R25 | 150k | 150k | ||
| R26 | 470k | 470k | ||
| R27 | 150k | 150k | ||
| R28 | 4k7 | 4.7k | ||
| R29 | 68k | 68k | ||
| R30 | 10k | 10k | ||
| R31 | 3M3 | 3.3M | ||
| R32 | 22k | 22k | ||
| Capacitors 13 | ||||
| C1 | 47n | 47n | ||
| C2 | 10n | 10n | ||
| C3 | 10n | 10n | ||
| C4 | 10n | 10n | ||
| C5 | 10n | 10n | ||
| C6 | 47u | 47u | ||
| C7 | 100u | 100u | ||
| C8 | 47p | 47p | ||
| C9 | 1u | 1u | ||
| C10 | 15u | 15u | ||
| C11 | 100n | 100n | ||
| C12 | 10n | 10n | ||
| C13 | 100n | 100n | ||
| Diodes 3 | ||||
| D1 | 1n5817 | 1N5817 | ||
| D2 | Zener | ZENER | ||
| D3 | 1n4148 | 1N4148 | ||
| Transistors 4 | ||||
| Q1 | 2N5457 | 2N5457 | ||
| Q2 | 2N5457 | 2N5457 | ||
| Q3 | 2N5457 | 2N5457 | ||
| Q4 | 2N5457 | 2N5457 | ||
| ICs 3 | ||||
| IC1 | NJM4558 | NJM4558 | ||
| IC2 | TL074 | TL074 | ||
| IC3 | LM358 | LM358 | ||
| Potentiometers 2 | ||||
| RATE | 1MC | C1M | Potentiometer | |
| DEPTH | 100KB | B100k | Potentiometer | |
| Trimmers 2 | ||||
| LEVEL | 10K | 10k | Trimmer | |
| BIAS | 100K | 100k | Trimmer | |