FuzzDog Electrica+ User manual

Electrica+
Multiple tone shaping tools
on one tiny board
Contents of this document are ©2018 Pedal Parts Ltd.
o reproduction permitted without the express written
permission of Pedal Parts Ltd. All rights reserved.

ELECTRICA* TWEEDY CHAMPION
R1 1M 1M 1M
R2 2M2 2M2 2M2
R3 4K7 3K3 3K3
R4 680R 330R 330R
R5 Jumper Jumper 330R
C1 100n 47n 47n
C2 100n 100n 100n
C3 47u elec 47u elec 47u elec
C4 Empty 47u elec 47u elec
Q1 2N5088 2N5088 2N5088
D1 1N4001 1N4148 1N60P
D2 1N34A 1N4148 1N60P
VOL 100KA 500KA 100KA
Schematic
+ BOMs
*There’s no efinitive BOM
for the Electrica, it’s a
basic circuit topography
that’s ripe for tweaking.

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. Check the separate
daughterboard document for details.
Be very careful when soldering the diodes
and transistor. They’re very sensitive to
heat. You should use some kind of heat
sink (crocodile clip or reverse action
tweezers) on each leg as you solder them.
Keep exposure to heat to a minimum
(under 2 seconds).
egative (cathode) legs of the diodes go to
the square pads.
C3 and C4 can go on either side of the
PCB. We thought it best to put them on the
same side as the pot as it’s dead space
anyway, and it would make it easier to
squeeze into 1590A builds.
Positive (anode) legs of the electrolytic
caps go to the square pads.
If you’re using germanium diodes in a D07
package you’ll have to mount them upright
on the PCB.
PCB layout ©2017 Pedal Parts Ltd.

Test the board!
UNDER NO CIRCUMSTANCES will troubleshooti g help
be offered if you have skipped this stage. No exceptio s.
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.
Solder some nice, long lengths of wire to the board connections for 9V, G D, I and OUT.
Connect I and OUT to the jacks as shown. Connect all the G Ds 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, THE worry about the switch etc.
BATTERY
IN OUT
Your nice, new circuit board
INCLUDING WIRED POTS!!!!
IN 9V GND OUT

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 G D 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 I 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, egative G D. Your power supply should be Tip
egative / 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
BOARD
GND
BOARD
LED+
+
Wire it up (if using a daughterboard please refer to the relevant document)

This template is a rough guide only. You should ensure correct marking of your
enclosure before drilling. You use this template at your own risk.
Pedal Parts Ltd can accept no responsibility for incorrect drilling of enclosures.
FuzzDog.co.uk
Drilling te plate
Ha ond 1590B
60 x 111 x 31
Reco ended drill sizes:
Pots 7
Jacks 10
Footswitch 12
DC Socket 12

This template is a rough guide only. You should ensure correct marking of your
enclosure before drilling. You use this template at your own risk.
Pedal Parts Ltd can accept no responsibility for incorrect drilling of enclosures.
FuzzDog.co.uk
Drilling te plate
Ha ond 1590A
36 x 90 x 30
Reco ended drill sizes:
Pots 7
Jacks 10
Footswitch 12
DC Socket 8