EP Booster

EP Booster is perfect to boost the guitar adding some sparkle and definition. It sounds great over all the frequency range.
Steps

Created by DHEA
Status: Active
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Designators and components Step 2 of 4

PCB DESIGNATORS

Capacitor            
C1    47n        47NF 0.047UF 100V 5% POLYESTER FILM BOX TYPE CAPACITOR
C2    10u        10UF 50V 105C RADIAL ELECTROLYTIC CAPACITOR 5X11MM
C3    10u        10UF 50V 105C RADIAL ELECTROLYTIC CAPACITOR 5X11MM
C4    100u        100UF 35V 105C RADIAL ELECTROLYTIC CAPACITOR 6X11MM
C5    3.3n        3.3NF 0.0033UF 100V 5% POLYESTER FILM BOX TYPE CAPACITOR
C6    10u        10UF 50V 105C RADIAL ELECTROLYTIC CAPACITOR 5X11MM
C7    10u        10UF 50V 105C RADIAL ELECTROLYTIC CAPACITOR 5X11MM
C8    47u        47UF 50V 105C RADIAL ELECTROLYTIC CAPACITOR 6X11MM
Diode            
D1    1N4148        1N4148 SWITCHING SIGNAL DIODE
Transistors            
Q1    J201        J201 JFET N-CHANNEL AMPLIFIER TRANSISTOR
Q2    2N5088        2N5088 NPN GENERAL PURPOSE TRANSISTOR
Resistors            
R1    1M        1M OHM 1/4W 1% METAL FILM RESISTOR
R2    33k        33K OHM 1/4W 1% METAL FILM RESISTOR
R3    1M        1M OHM 1/4W 1% METAL FILM RESISTOR
R4    8.2k        8.2K OHM 1/4W 1% METAL FILM RESISTOR
R5    4.7k        4.7K OHM 1/4W 1% METAL FILM RESISTOR
R6    1k        1K OHM 1/4W 1% METAL FILM RESISTOR
R7    15k        15K OHM 1/4W 1% METAL FILM RESISTOR
R8    10k        10K OHM 1/4W 1% METAL FILM RESISTOR
R9    1M        1M OHM 1/4W 1% METAL FILM RESISTOR
R10    10k        10K OHM 1/4W 1% METAL FILM RESISTOR
R11    10k        10K OHM 1/4W 1% METAL FILM RESISTOR
R12    47k        47K OHM 1/4W 1% METAL FILM RESISTOR
R13    100        100 OHM 1/4W 1% METAL FILM RESISTOR
Potentiometer            
GAIN    10k-C        10K OHM C10K 10KC ANTI-LOG TAPER POTENTIOMETER
Switches
S1 (Bass)      MINI TOGGLE SWITCH SPDT ON-ON
S2 (Treble)     MINI TOGGLE SWITCH SPDT ON-ON

 

GENERAL DESCRIPTION OF COMPONENTS

Resistors
The resistors are ¼ Watt metal type. You can either use a multimeter or the color bands to obtain their values. Resistors don’t have polarity; you can assemble them in any direction.

Electrolytic capacitors
Electrolytic capacitors have the value printed on them. The polarity is also is marked for the negative lead, additionally the longer leg is the positive and shorter the negative. Assemble the electrolytic capacitor according with the positive polarity (+) marked in the PCB, that is, the longer leg of the capacitor is passed through the pad marked with +.

Polyester capacitors
The polyester capacitors have three numbers, read as picofarads (pF), the first two are the 1st and 2nd digits and the third is the multiplier code. This type of capacitors doesn’t have polarity; you can assemble them in any direction.

Ceramic capacitors

The ceramic capacitors have three numbers, read as picofarads (pF), the first two are the 1st and 2nd digits and the third is the multiplier code. This type of capacitors doesn’t have polarity; you can assemble them in any direction.

Potentiometer
Potentiometers can be mounted directly on the PCB. For a correct orientation, the potentiometer shaft is marked on the PCB.

 

Transistors
Transistors are three terminals components and their model and name are printed on them. To indicate the correct assembling position one side of the transistor is flat and the other one is round, in the same way, the PCB is marked with round and flat side.

 

Diodes
Diodes have their type number marked on them. This two terminals component has polarity; a ring near the side indicates the cathode. This ring is marked as a line to indicate the correct polarity in the PCB.