Timmy Overdrive

The Timmy Overdrive provides a classic transparent overdrive with a huge versatility thanks to the three clipping options.
Steps

Created by DHEA
Status: Active
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Designators and components Step 2 of 5

COMPONENTS

PCB        TIMMY OVERDRIVE DIY PCB GUITAR EFFECT

Capacitors
C1    47n       47NF 100V 5% POLYESTER FILM BOX TYPE CAPACITOR
C2    100p     100PF 50V CERAMIC DISC CAPACITOR
C3    39n       39NF 100V 5% POLYESTER FILM BOX TYPE CAPACITOR
C4    1u         1UF 100V 5% POLYESTER FILM BOX TYPE CAPACITOR
C5    10n       10NF 100V 5% POLYESTER FILM BOX TYPE CAPACITOR
C6    1u         1UF 100V 5% POLYESTER FILM BOX TYPE CAPACITOR
C7    100u     100UF 35V ELECTROLYTIC CAPACITOR 6X11MM
C8    47u       47UF 25V ELECTROLYTIC CAPACITOR 5X11MM
C9    Not mounted

IC
IC1    NJM4558        NJM4558D IC DUAL OPERATIONAL AMPLIFIER
IC Socket        8PIN IC DIP SOCKET

Diodes
D1    1N4148      1N4148 SWITCHING SIGNAL DIODE
D2    1N4148      1N4148 SWITCHING SIGNAL DIODE
D3    1N4148      1N4148 SWITCHING SIGNAL DIODE
D4    1N4148      1N4148 SWITCHING SIGNAL DIODE
D5    1N4148      1N4148 SWITCHING SIGNAL DIODE
D6    1N4148      1N4148 SWITCHING SIGNAL DIODE
D7    1N4148      1N4148 SWITCHING SIGNAL DIODE
D8    1N4001      1N4001 DIODE 1A 50V

Resistors
R1     2.2M     2.2M OHM 1/4W 1% METAL FILM RESISTOR
R2     510k     510k OHM 1/4W 1% METAL FILM RESISTOR
R3     3.3k      3.3K OHM 1/4W 1% METAL FILM RESISTOR
R4     3.3k      3.3K OHM 1/4W 1% METAL FILM RESISTOR
R5     1.5k      1.5k OHM 1/4W 1% METAL FILM RESISTOR
R6     3.3k      3.3K OHM 1/4W 1% METAL FILM RESISTOR
R7     3.3k      3.3K OHM 1/4W 1% METAL FILM RESISTOR
R8     10k       10K OHM 1/4W 1% METAL FILM RESISTOR
R9     10k       10K OHM 1/4W 1% METAL FILM RESISTOR

Switches
S1        SWITCH SPDT ON-OFF-ON
S2        Jumper

Potentiometers
GAIN    1M-B       1m OHM LIN POTENTIOMETER
VOL      10k-A      10K OHM LOG POTENTIOMETER
TONE    50k-B      50K OHM LIN POTENTIOMETER
BASS    50k-B      50K OHM LIN POTENTIOMETER

 

SCHEMATIC

 

PCB