FuzzDog Blaster! User manual

Blaster!

Clone of the

Alembic tratoblaster boost

PedalParts.co.uk

chematic

BOM

R1 100R (68K*)

R2 22K

R3 12K

R4 100K

R5 1M

R6 2K2 (CLR)

C1 10u tantalum

C2 1u5 tantalum

C3 100u electrolytic

Q1 JFET (2N5457, J201)

POT 50KB (50KC**)

*Original value - smaller value is less intrusive.

** Reverse log gives better control if you can get it

The PCB is designed to have the boost pot mounted

directly. You can use wire if you like - simply

connect the board pads to the corresponding pins

on the pot.

Wiring shown overleaf will disconnect the battery

when you remove the jack plug from the input, and

also when a DC plug is inserted.

nap the little metal tag off the pot to mount it flush in the box.

You MU T use some kind of heat sink on the legs the transistor

when soldering. They aren’t keen on heat. Any more than 3-4

seconds of iron and its toast.

Recommended assembly order:

Resistors, Caps, Transistors, Pot, Wires

1 2 3

Test the board!

Once you’ve finished the circuit it makes sense to test is before

starting on the switch and LED wiring. It’ll cut down

troubleshooting time in the long run. If the circuit works at this

stage, but it doesn’t once you wire up the switch - guess what?

You’ve probably made a mistake with the switch.

older 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 it works, crack on and do your switch wiring. If not... aw man. At

least you know the problem is with the circuit. Find out why, get it

working, THEN worry about the switch etc.

YRET

Wire it up

The Board GND connections don’t all have to directly attach to the

board. You can run a couple of wires from the DC connector, one to the

board, another to the IN 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 / leeve Positive. That’s the same as your standard pedals

(Boss etc), and you can safely daisy-chain your supply to this pedal.

Now... GO BLA T OME TRAT!

PedalParts.co.uk

BOARD

OUT

BOARD

GND

BOARD

GND

BOARD

GND

BOARD

INPUT

BATTERY

OUT

BOARD

GND

BOARD

LED+

Table of contents

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