Scribd
Upload
461 views3 pages

Rat Datasheet

The document provides a parts list and assembly instructions for building a replica of the PROCO RAT distortion pedal using an LM308N op-amp. It lists the required electronic components including capacitors, diodes, transistors, resistors, and potentiometers, as well as their values and packages. Instructions are included to modify the design to create a "turbo" version by changing a few component values and adding a resistor.

Uploaded by

Eugy Alex
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
461 views3 pages

Rat Datasheet

The document provides a parts list and assembly instructions for building a replica of the PROCO RAT distortion pedal using an LM308N op-amp. It lists the required electronic components including capacitors, diodes, transistors, resistors, and potentiometers, as well as their values and packages. Instructions are included to modify the design to create a "turbo" version by changing a few component values and adding a resistor.

Uploaded by

Eugy Alex
Copyright
© © All Rights Reserved
We take content rights seriously. If you suspect this is your content, claim it here.
Available Formats
Download as PDF, TXT or read online on Scribd
You are on page 1/ 3

RAT

doc rev 22/05/15


www.op-electronics.com

The RAT is a faithful replica of PROCO(TM) RAT distortion based upon original LM308N opamp. If features
controls for DISTORTION, FILTER and VOL.

RAT partlist
Part Value Package Description
C1 22nF C050-025X075 CAPACITOR
C2 1nF C050-025X075 CAPACITOR
C3 100pF C050-025X075 CAPACITOR
C4 30pF C050-025X075 CAPACITOR
C5 47nF C050-025X075 CAPACITOR
C6 100uF E2,5-6 POLARIZED CAPACITOR
C7 47uF E2,5-6 POLARIZED CAPACITOR
C9 4.7uF E2,5-6 POLARIZED CAPACITOR
C10 2.2uF E2,5-6 POLARIZED CAPACITOR
C11 4.7uF E2,5-6 POLARIZED CAPACITOR
C12 3.3nF C050-025X075 CAPACITOR
C13 22nF C050-025X075 CAPACITOR
C14 1uF E2,5-6 POLARIZED CAPACITOR
D1 1N4002 DO41 Rectifier Diodes
D2 1N4148 DO35 Fast Switching Diode
D3 1N4148 DO35 Fast Switching Diode
DISTORTION 100K-A 16mm POT POTENTIOMETER
FILTER 100K-A 16mm POT POTENTIOMETER
IC1 LM308N DIL08 OP AMP
LED+ ANY COLOR LED LED
Q1 2N5457 TO92 N-CHANNEL JFET
R1 1M 0204/7 RESISTOR
R2 1K 0204/7 RESISTOR
R3 1M 0204/7 RESISTOR
R4 10K 0204/7 RESISTOR
R5 10K 0204/7 RESISTOR
R6 47 0204/7 RESISTOR
R8 560 0204/7 RESISTOR
R9 47 0204/7 RESISTOR
R10 1K 0204/7 RESISTOR
R11 1.5K 0204/7 RESISTOR
R12 1M 0204/7 RESISTOR
R13 10K 0204/7 RESISTOR
RLED 1K 0204/7 RESISTOR
VOL 100K-A 16mm POT POTENTIOMETER
With this pcb you can build the TURBO version too, it's just replacing a few components and adding a resistor:

TURBO RAT mod


R3 220K
R12 100K
C14 10uF el.cap.
D2, D3 1N34A
Add a 10K resistor between pins 1 and 3 of volume pot

You might also like