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DISTORTIONFILTERVOLUME

Enclosure not stated · 3 knobs

Effects Layouts (blog)

ProCo RAT ProjectVerified

Based on the ProCo RAT· 41 other boards clone it

Category
Distortion
Controls
Distortion · Filter · Volume
Build
Perfboard
Layout
Verified · Effects Layouts (blog) marks it as built and working
Tags
Distortion, ProCo, Project
Open the layout at Effects Layouts (blog) SchematicCody

From the post

Here's the classic RAT distortion with on-board pots. All the ProCo RATs are essentially the same circuit, just with a few value changes over the years. For this project, the board can be used to make 4 different versions of this great distortion box: The original RAT, the RAT 2, the Turbo RAT, and the You Dirty RAT. Here's the basic schematic:

The component names from the above schematic follow those in the layout drawing below.

The project file with a full BOM, scaled transfer images, and drilling template can be found here.

Thanks to Cody for verifying this ahead of time for me. You sir, are a scholar and a gentleman.

Schematic

This is a board layout, a drawing of where each part goes, and the post may link the schematic it was drawn from. Open the layout at Effects Layouts (blog). No KiCad fragment has been drawn for this circuit yet.

Parts list 35 rows

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RefValueNormalizedTypeNotes
Resistors 14
R1??value not given; read from the layout by eye
R2??value not given; read from the layout by eye
R3??value not given; read from the layout by eye
R4??value not given; read from the layout by eye
R5??value not given; read from the layout by eye
R6??value not given; read from the layout by eye
R7??value not given; read from the layout by eye
R8??value not given; read from the layout by eye
R9??value not given; read from the layout by eye
R10??value not given; read from the layout by eye
R11??value not given; read from the layout by eye
R12??value not given; read from the layout by eye
R13??value not given; read from the layout by eye
R14??value not given; read from the layout by eye
Capacitors 13
C1??electrolytic, value not given; read from the layout by eye
C2??electrolytic, value not given; read from the layout by eye
C3??value not given; read from the layout by eye
C4??value not given; read from the layout by eye
C5??value not given; read from the layout by eye
C6??electrolytic, value not given; read from the layout by eye
C7??electrolytic, value not given; read from the layout by eye
C8??value not given; read from the layout by eye
C9??electrolytic, value not given; read from the layout by eye
C10??value not given; read from the layout by eye
C11??value not given; read from the layout by eye
C12??value not given; read from the layout by eye
C13??electrolytic, value not given; read from the layout by eye
Diodes 3
D1??value not given; read from the layout by eye
D2??value not given; read from the layout by eye
D3??value not given; read from the layout by eye
Transistors 1
Q1??JFET (pins marked D S G), value not given; read from the layout by eye
ICs 1
IC1??8-pin DIP, value not given; read from the layout by eye
Potentiometers 3
Distortion??Potentiometervalue not given; read from the layout by eye
Filter??Potentiometervalue not given; read from the layout by eye
Volume??Potentiometervalue not given; read from the layout by eye

Other boards based on the ProCo RAT