OD-1 Overdrive

COMPONENT LIST 

PCB           
PCB              Od-1 OVERDRIVE PCB

Capacitors        
C1    100n     100NF 100V 5% POLYESTER FILM BOX TYPE CAPACITOR
C2    47n       47NF 100V 5% POLYESTER FILM BOX TYPE CAPACITOR
C3    47n       47NF 100V 5% POLYESTER FILM BOX TYPE CAPACITOR
C4    47p       47PF 50V CERAMIC DISC CAPACITOR
C5    18n       18NF 100V 5% POLYESTER FILM BOX TYPE CAPACITOR
C6    1u         1UF 100V 5% POLYESTER FILM BOX TYPE CAPACITOR
C7    100n     100NF 100V 5% POLYESTER FILM BOX TYPE CAPACITOR
C8    1u         1UF 100V 5% POLYESTER FILM BOX TYPE CAPACITOR
C9    47u       47UF 50V ELECTROLYTIC CAPACITOR 6X11MM
C10  100u     100UF 35V ELECTROLYTIC CAPACITOR 6X11MM

Diodes        
D1    1N4148      1N4148 SWITCHING SIGNAL DIODE
D2    1N4148      1N4148 SWITCHING SIGNAL DIODE
D3    1N4148      1N4148 SWITCHING SIGNAL DIODE
D4    1N4001      1N4001 DIODE 1A 50V

IC        
U1     TL074       TL074 OPERATIONAL AMPLIFIER
(U1 Socket    14 PIN DIP IC SOCKET ADAPTOR)

Resistors        
R1     1M        1M OHM 1/4W 1% METAL FILM RESISTOR
R2     1k         1K OHM 1/4W 1% METAL FILM RESISTOR
R3     220k     220K OHM 1/4W 1% METAL FILM RESISTOR
R4     10k       10K OHM 1/4W 1% METAL FILM RESISTOR
R5     4.7k      4.7K OHM 1/4W 1% METAL FILM RESISTOR
R6     33k       33K OHM 1/4W 1% METAL FILM RESISTOR
R7     10k       10K 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
R10    4.7k     4.7K OHM 1/4W 1% METAL FILM RESISTOR
R11    470k    470K OHM 1/4W 1% METAL FILM RESISTOR
R12    470      470 OHM 1/4W 1% METAL FILM RESISTOR
R13    100k    100K OHM 1/4W 1% METAL FILM RESISTOR
R14    33k      33K OHM 1/4W 1% METAL FILM RESISTOR
R15    33k      33K OHM 1/4W 1% METAL FILM RESISTOR

Potentiometers        
VOLUME    10k-B      10K OHM LINEAR TAPER POTENTIOMETER
GAIN         1M-A       1M OHM LOGARITHMIC TAPER POTENTIOMETER

PCB SCHEMATIC

PCB

GENERAL DESCRIPTION OF COMPONENTS

Resistors

Resistors don't have polarity, so you can place them in any direction. Determine their resistance value by using a multimeter or by reading the color bands.

Electrolytic capacitors

Electrolytic capacitors have their value and maximum voltage rating printed on the body. The negative pin is indicated by a white stripe along the can, and it also has a shorter leg. The longer leg is positive. Never exceed the maximum voltage rating. Ensure the capacitor's voltage rating is at least double that of your power supply (e.g., use an 18V capacitor for a 9V power supply).

Polyester capacitors

Polyester capacitors don't have polarity and can be placed in any direction. Their value is marked using a three-number code. The first two numbers represent the first and second digits of the value, and the third number is the multiplier code (read in picofarads, pF).

Ceramic capacitors

Ceramic capacitors don't have polarity and can be placed in any direction. Their value is marked using a three-number code. The first two numbers represent the first and second digits of the value, and the third number is the multiplier code (read in picofarads, pF).

Integrated Circuits

Integrated Circuits (ICs) have their model number printed on them. A notch, a half-circle, or a small dot indicates the correct orientation on the PCB.

Diodes

Diodes have their model number printed on them. The polarity (cathode) is indicated by a stripe or ring near one end. This ring corresponds to the polarity marking on the PCB.

Led diodes

LEDs (Light Emitting Diodes) have polarity. The cathode is indicated by a flat edge on the side of the LED's plastic casing and a shorter leg. The longer leg is the anode. On the PCB, the cathode is marked with a flat side and the anode with a round side.

Potentiometers

Potentiometers have their resistance value marked on them. They are also marked with a letter to indicate their taper: A for logarithmic, B for linear, and C for reverse logarithmic.