FuzzDog MicrAmp Bedienungsanleitung

MicrAmp

Tiny op-amp booster that

packs a mighty punch

No reproduction permitted without the express written

chematic, layout and BOM

R1 1M

R2 10M

R3 1K

R4 56K

R6 2K7

R7 100K

R8 100K

R9 470R

R10 10K

C1 100n

C2 47p

C3 4u7 elec

C4 1u elec

C5 15u elec

IC TL061*

D1 1N4001

VOL 500KC

*Other single op-amps

will work, such as TL071

The power and signal pads on the PCB conform to the FuzzDog Direct Connection

format, so can be paired with the appropriate daughterboard for quick and easy

offboard wiring.

nap the small metal tag off the pot so it can be

mounted flush in the box.

Pot mounts on the same side of the board as the other

components (other than the IC).

The striped leg (cathode) of the diode goes into the

square pad.

The long leg (anode) of the electrolytics capacitors go into

.the square pads

The IC fits on the back of the board

“IC on the back of the board?

That’s crazy!” Well, no. It

means you can easily fit one of

these bad boys into a 1590A.

R4 and R7 will have to be

soldered in place before you

mount the IC socket. Make

sure you trim those

connections good and tight so

they aren’t stopping the socket

getting flush with the board.

1 2 3

Test the board!

UNDER NO CIRCUMSTANCES will troubleshooting help

be offered if you have skipped this stage. No exceptions.

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?

ou’ve probably made a 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 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.

BATTERY

IN OUT

Your nice, new circuit board

INCLUDING WIRED POTS!!!!

IN 9V GND OUT

Wire it up

(if using a daughterboard please refer to the relevant document)

Wiring shown above will disconnect the battery when you remove the jack

plug from the input, and also when a DC plug is inserted.

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

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. our 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.

PedalParts.co.uk

BOARD

OUT

BOARD

GND

BOARD

GND

BOARD

GND

BOARD

INPUT

BATTERY

OUT

BOARD

GND

BOARD

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