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One-Knob Fuzz

(

es

)

A lot of fuzz, a little build

Contents of this document are ©2019 Pedal Parts Ltd.

No reproduction permitted without the express written

permission of Pedal Parts Ltd. All rights reserved.

Summary of Contents for One-Knob Fuzz(es)

Page 1: ...One KnobFuzz es A lot of fuzz a little build Contents of this document are 2019 Pedal Parts Ltd No reproduction permitted without the express written permission of Pedal Parts Ltd All rights reserved ...

Page 2: ...wise stated in this document this circuit is designed to be powered with 9V DC COMPONENT SPECS Unless otherwise stated in this document Resistors should be 0 25W You can use those with higher ratings but check the physical size of them Electrolytics caps should be at least 25V for 9V circuits 35V for 18V circuits Again check physical size if using higher ratings LAYOUT CONVENTIONS Unless otherwise...

Page 3: ...OL 500KA FUZZBLOOD R1 100K R2 47K R3 100R R4 5K6 R5 1K R6 1M5 C1 100n C2 100n C3 220p C4 10u C5 empty Q1 2N2222A Q2 2N2222A VOL 500KA CEREMONY R1 150K R2 10K R3 820R R4 2k R5 1K R6 1M C1 680n C2 220n C3 150p C4 10u C5 empty Q1 2N2222A Q2 2N2222A VOL 500KA C5 has been added to the board so you can make even more variations such as the THUG or just to tame some top end fizz on any of the circuits be...

Page 4: ... R5 1K R6 1M C1 47n C2 100n C3 470p C4 10u C5 47p Q1 2N3904 Q2 BC182L VOL 500KB E C B BC182L E B C 2N3904 The BC182L used in the two THUG variants has a different pinout to most of the other transistors used in the OKF circuits We ve added an extra Emitter pad for Q2 so you can easily mount this transistor without any awkward leg twisting E C B X E C B ...

Page 5: ...Be very careful when soldering the transistors They re very sensitive to heat Keep exposure to heat to a minimum under 2 seconds and leave a few seconds between soldering each leg Snap the small metal tag off the pot so it can be mounted flush in the box You should solder all other board mounted components before you solder the pot Once it s in place you ll have no access to much of the board PCB ...

Page 6: ...mistake with the switch Solder some nice long lengths of wire to the board connections for 9V GND IN and OUT Connect IN and OUT to the jacks as shown Connect all the GNDs together twist them up and add a small amount of solder to tack it Connect the battery lead to the 9V wire same method Plug in Go If you re using a ribbon cable you can tack the wires to the ends of that It s a lot easier to take...

Page 7: ... jack then daisy chain that over to the OUT jack It doesn t matter how they all connect as long as they do This circuit is standard Negative GND Your power supply should be Tip Negative Sleeve Positive That s the same as your standard pedals Boss etc and you can safely daisy chain your supply to this pedal L E D BOARD OUT BOARD 9V BOARD GND BOARD GND BOARD GND BOARD INPUT BATTERY IN OUT L E D BOAR...

Page 8: ... Parts Ltd can accept no responsibility for incorrect drilling of enclosures FuzzDog co uk Drilling template Hammond 1590B 60 x 111 x 31mm It s a good idea to drill the pot and toggle switch holes 1mm bigger if you re board mounting them Wiggle room good Recommended drill sizes Pots 7mm Jacks 10mm Footswitch 12mm DC Socket 12mm Toggle switches 6mm ...

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