1590B
Fuzz Dog· FatPig
Fat Pig
Based on the Plexi Drive· 1 other board clones it
- Category
- Overdrive· OD/Dist/Preamp
- Difficulty
- Medium
- Price
- £38.40
- Tags
- od-distortion
From the vendor
Big fat tube-like drive.
Cascading CMOS gain/clipping stages, much like the Red Llama, give a warm breakup across a range of gains. Bluesy grit through to almost too much saturation, with a MORE toggle to push it that little bit further. Tweak the tone with the variable low-pass filter and you've got yourself a winner.
Power with 9-18V, though honestly it sounds great with just the 9.
The kit is supplied with vertical-mount pots which have round shafts, so you'll need set-screw fitting knobs.
You will need a multimeter to tune this circuit. You *could* do it by ear but it's not recommended.
If you want the PCB without parts there's a link for that at the bottom of the page.
Partial kit: PCB, all board-mounted components, 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 only available with full kits, and will not take a battery. Knobs are not included.
Inspired by: Plexi Drive
Difficulty: Medium
PCB size: 50 x 50mm
Knobs required: 3
Enclosure: 1590B
Power and Signal pads match the Direct Connect 3PDT Daughterboard
Check Specials for powder-coated enclosure availability.
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 38 rows
Report a wrong parse| Ref | Value | Normalized | Type | Notes |
|---|---|---|---|---|
| Resistors 20 | ||||
| R1 | 10M | 10M | ||
| R2 | 10K | 10k | ||
| R3 | 1M | 1M | ||
| R4 | 2M2 | 2.2M | ||
| R5 | 100K | 100k | ||
| R7 | 1K5 | 1.5k | ||
| R8 | 62K | 62k | ||
| R9 | 47K | 47k | ||
| R10 | 130K | 130k | ||
| R11 | 100K | 100k | ||
| R12 | 130K | 130k | ||
| R13 | 100K | 100k | ||
| R14 | 130K | 130k | ||
| R15 | 100K | 100k | ||
| R16 | 130K | 130k | ||
| R17 | 2M2 | 2.2M | ||
| R18 | 560K | 560k | ||
| R19 | 560K | 560k | ||
| R20 | 1M | 1M | ||
| R21 | 150R | 150 | ||
| Capacitors 13 | ||||
| C1 | 10n | 10n | ||
| C2 | 100n | 100n | ||
| C3 | 100p | 100p | ||
| C4 | 82n | 82n | ||
| C5 | 1u | 1u | Electrolytic capacitor | |
| C6 | 27n | 27n | ||
| C7 | 100p | 100p | ||
| C8 | 27n | 27n | ||
| C9 | 220n | 220n | ||
| C10 | 1u | 1u | Electrolytic capacitor | |
| C11 | 10u | 10u | Electrolytic capacitor | |
| C12 | 100n | 100n | ||
| C13 | 100u | 100u | Electrolytic capacitor | |
| Diodes 2 | ||||
| D1 | 1N5817 | 1N5817 | ||
| D2-3 | 1N4147 | 1N4147 | ||
| ICs 2 | ||||
| IC1 | TL072 | TL072 | ||
| IC2 | CD4049UBE | CD4049UBE | ||
| Switches 1 | ||||
| SW | SPDT ON-ON | SPDT ON-ON | ||
Other boards based on the Plexi Drive
- Pixel Drive Fuzz Dog · 1590B · £38.40