Box of Rock

The Box of Rock pedal emulates the JTM45 tone. This pedal has great headroom and you will be able to control the distortion by using the guitar volume knob.
Steps
  1. Overview
  2. Designators and components
  3. PCB assembly
  4. Enclosure and wiring
  5. Drilling template
Categories
Tayda Electronics Kits, DIY Projects, DIY Guitar Effects
Created by DHEA
Status: Active
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Designators and components Step 2 of 5

PCB DESIGNATORS

PCB
PCB         BOX OF ROCK DIY PCB GUITAR EFFECT
Capacitors        
C1      100n     100NF 100V 5% POLYESTER FILM BOX TYPE CAPACITOR
C2      22n       22NF 100V 5% POLYESTER FILM BOX TYPE CAPACITOR
C3      470p     470PF 50V CERAMIC DISC CAPACITOR
C4      22n       22NF 100V 5% POLYESTER FILM BOX TYPE CAPACITOR
C5      1u         1UF 50V ELECTROLYTIC CAPACITOR 5X11MM
C6      10n       10NF 100V 5% POLYESTER FILM BOX TYPE CAPACITOR
C7      22n       22NF 100V 5% POLYESTER FILM BOX TYPE CAPACITOR
C8      1n         1NF 100V 5% POLYESTER FILM BOX TYPE CAPACITOR 
C9      1n         1NF 100V 5% POLYESTER FILM BOX TYPE CAPACITOR 
C10    100n     100NF 100V 5% POLYESTER FILM BOX TYPE CAPACITOR
C11    10u       10UF 50V ELECTROLYTIC CAPACITOR 5X11MM
C12    47u       47UF 25V ELECTROLYTIC CAPACITOR 5X11MM
C13    1n         1NF 100V 5% POLYESTER FILM BOX TYPE CAPACITOR 
C14    1n         1NF 100V 5% POLYESTER FILM BOX TYPE CAPACITOR 

Transistors
Q1    BS170       BS170 BS170RLRAG MOSFET N-CHANNEL
Q2    BS170       BS170 BS170RLRAG MOSFET N-CHANNEL
Q3    BS170       BS170 BS170RLRAG MOSFET N-CHANNEL
Q4    BS170       BS170 BS170RLRAG MOSFET N-CHANNEL

Resistors        
R1      1M        1M OHM 1/4W 1% METAL FILM RESISTOR
R2      1M        1M OHM 1/4W 1% METAL FILM RESISTOR
R3      1M        1M OHM 1/4W 1% METAL FILM RESISTOR
R4      5.1k      5.1K OHM 1/4W 1% METAL FILM RESISTOR
R5      470k     470K OHM 1/4W 1% METAL FILM RESISTOR
R6      1M        1M OHM 1/4W 1% METAL FILM RESISTOR
R7      1M        1M OHM 1/4W 1% METAL FILM RESISTOR
R8      5.1k      5.1K OHM 1/4W 1% METAL FILM RESISTOR
R9      100       100 OHM 1/4W 1% METAL FILM RESISTOR
R10    1M        1M OHM 1/4W 1% METAL FILM RESISTOR
R11    1M        1M OHM 1/4W 1% METAL FILM RESISTOR
R12    5.1k      5.1K OHM 1/4W 1% METAL FILM RESISTOR
R13    330       330 OHM 1/4W 1% METAL FILM RESISTOR
R14    47k       47K OHM 1/4W 1% METAL FILM RESISTOR
R15    82k       82K OHM 1/4W 1% METAL FILM RESISTOR
R16    10k       10K OHM 1/4W 1% METAL FILM RESISTOR
R17    10k       10K OHM 1/4W 1% METAL FILM RESISTOR
R18    1M        1M OHM 1/4W 1% METAL FILM RESISTOR
R19    1M        1M OHM 1/4W 1% METAL FILM RESISTOR
R20    1M        1M OHM 1/4W 1% METAL FILM RESISTOR
R21    5.1k      5.1K OHM 1/4W 1% METAL FILM RESISTOR
R22    47k       47K OHM 1/4W 1% METAL FILM RESISTOR
R23    82         82 OHM 1/4W 1% METAL FILM RESISTOR

Diodes
D1    1N4739A    1N4739A 1N4739 ZENER DIODE 9.1V 1W
D2    1N4739A    1N4739A 1N4739 ZENER DIODE 9.1V 1W
D3    1N4001      1N4001 DIODE 1A 50V

Potentiometers        
VOL         100k-A     100K OHM LOG POTENTIOMETER
TONE       100k-B     100K OHM LINEAR POTENTIOMETER
GAIN        5k-C         5K OHM ANTI-LOG TAPER POTENTIOMETER
BOOST     5k-C         5K OHM ANTI-LOG TAPER POTENTIOMETER

PCB

SCHEMATIC

TRANSISTORS

2N7000 is a common replacement for BS170, however the pinout is a 180 degrees turn. Mount the transistors on the PCB as follows.

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