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Sheepylove· PCB002

DS78R - Rattus rattus

Based on the ProCo RAT· 41 other boards clone it

Category
Distortion
Price
€10.00in stock
Tags
Distortion
Buy the PCB at Sheepylove Build document2026-02-15

From the vendor

The Rat which launched 1,000 bands.. the ProCo Rat is one of the originals, often cloned, seldom beaten.

The original used an LM308 but these are becoming un-obtainium, and modern releases use the OP07. Other single op-amps can add different flavours, TL071 for example.

Experiment if you like that kinda thing, or just use an OP07 like I do.

Schematic

The schematic is in the vendor's build document, page 4. Open the build document. No KiCad fragment has been drawn for this circuit yet.

Parts list 32 rows

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Got parts in a drawer? See what you can build with them.

RefValueNormalizedTypeNotes
Resistors 11
R21M1M
R51M1M
R111M1M
R3100k100k
R4100k100k
R61k1k
R91k1k
R74747
R8560560
R101k51.5k
R1210k10k
Capacitors 12
C1100u100u
C21u1u
C121u1u
C322n22n
C1122n22n
C41n1n
C530p30pCompensation cap. Omit for OP07
C6100p100p
C72u22.2u
C84u74.7u
C94u74.7u
C103n33.3n
Diodes 3
D11N58171N5817
D31N9141N914
D41N9141N914
Transistors 1
Q12N54582N5458MMBF5457 is an alternative.
ICs 1
U1OP07OP07Original uses LM308
Potentiometers 3
POT1A100kA100k
POT2A100kA100k
POT3A100kA100k
LEDs 1
D2LEDLED

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