1590B
Fuzz Dog· Phase 90
Phase 90
Based on the MXR Phase 90· 14 other boards clone it
- Category
- Phaser· Delay/Mod/Filter
- Difficulty
- Medium-hard
- Price
- £42.00
- Tags
- delay-mod-filter
From the vendor
Want phase? We got phase. 90 degrees of it. We've kept it simple in this new version of the PCB. We like it that way. The option to have a trimmer for adjustable feedback is still there - a nice set-and-forget feature. Other than that it's just a case of setting the bias voltage and off you go. Matched FETs are optional, as we had lots of requests to supply the kit without them in the past. The PCB is designed for DSG pinout FETs, such as 2N5457, so you'll have to check yours if using something else. If the product options aren't showing any matched sets available, that's the case. They take time to sort. Whether you get them from us or not, you NEED FETS for this circuit to work. The kit is supplied with a vertical-mount pot which has a round shaft, so you'll need set-screw fitting knob. Partial kit: PCB, all board-mounted components (not footswitch), pots. Full kit: As above, plus footswitch and appropriate daughterboard/components for your selected bypass type (see Downloads section for details of those), jack sockets, DC socket, battery snap, hook-up wire, LED. Enclosure (pre-drilled) is available as an option with partial kits, and will not take a battery. Knobs are not included. Inspired by: Phase 90 Difficulty: Medium-hard PCB size: 50 x 50mm Knobs required: 1 Enclosure: 1590B Download INSTRUCTION PDF
Schematic
The schematic is in the vendor's build document, page 3. Open the build document. No KiCad fragment has been drawn for this circuit yet.
Parts list 50 rows
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| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 28 | ||||
| R1 | 10K | 10k | ||
| R22 | 150K | 150k | ||
| R2 | 470K | 470k | ||
| R23 | 4K7 | 4.7k | ||
| R3 | 150K | 150k | ||
| R24 | 470K | 470k | ||
| R4 | 150K | 150k | ||
| R25 | 150K | 150k | ||
| R5 | 56K | 56k | ||
| R26 | 47R | 47 | ||
| R6 | 150K | 150k | ||
| R27 | 10K | 10k | ||
| R7 | 10K | 10k | ||
| R28 | 1M | 1M | ||
| R8 | 10K | 10k | ||
| R30 | 1M | 1M | ||
| R9 | 22K | 22k | ||
| R10 | 10K | 10k | ||
| R11 | 10K | 10k | ||
| R12 | 22K | 22k | ||
| R13 | 10K | 10k | ||
| R14 | 10K | 10k | ||
| R15 | 22K | 22k | ||
| R16 | 10K | 10k | ||
| R17 | 10K | 10k | ||
| R18 | 22K | 22k | ||
| R20 | 150K | 150k | ||
| R21 | 3M9 | 3.9M | ||
| Capacitors 12 | ||||
| C1 | 10n | 10n | ||
| C2 | 47n | 47n | ||
| C3 | 47n | 47n | ||
| C4 | 47n | 47n | ||
| C5 | 47n | 47n | ||
| C6 | 47n | 47n | ||
| C7 | 47n | 47n | ||
| C8 | 10n | 10n | ||
| C9 | 15u | 15u | elec | |
| C10 | 100u | 100u | elec | |
| C11 | 100n | 100n | ||
| C12 | 22u | 22u | ||
| Diodes 2 | ||||
| D1 | 5.1v zener | 5V1 | ||
| D2 | 1N4001 | 1N4001 | ||
| Transistors 5 | ||||
| Q2 | Matched FETs* | MATCHED FETS | ||
| Q3 | Matched FETs* | MATCHED FETS | ||
| Q4 | Matched FETs* | MATCHED FETS | ||
| Q5 | Matched FETs* | MATCHED FETS | ||
| Q1 | 2N5087 | 2N5087 | ||
| ICs 2 | ||||
| IC1 | TL072 | TL072 | ||
| IC2 | TL074 | TL074 | ||
| LEDs 1 | ||||
| D3 | LED | LED | ||
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