Akashic Guitar effects circuit lookup
HARMONICSBALANCE

Enclosure not stated · 2 knobs

Effects Layouts (blog)

Harmonic PercolatorVerified

Based on the Interfax Harmonic Percolator· 22 other boards clone it

Category
Fuzz
Controls
Harmonics · Balance
Build
Perfboard
Layout
Verified · Effects Layouts (blog) marks it as built and working
Tags
Fuzz
Open the layout at Effects Layouts (blog) Schematic

From the post

Here's the mythical Interfax Harmonic Percolator for Fuzz Friday. It's a pretty unique circuit design and uses germanium and silicon transistors. Here's the schematic for reference.

Schematic

This is a board layout, a drawing of where each part goes, and the post may link the schematic it was drawn from. Open the layout at Effects Layouts (blog). No KiCad fragment has been drawn for this circuit yet.

Parts list 15 rows

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Check before you build · 2 values the reader of this layout was not sure of
  • 47nF at the left (row E): the wiring diagram of the same board prints 50nF for this part
  • 750K and 91K in the middle: printed clearly, unusual values
RefValueNormalizedTypeNotes
Resistors 5
×1750K750kread from the layout by eye
×1220K220kread from the layout by eye
×191K91kread from the layout by eye
×110K10kread from the layout by eye
×14.7K4.7kread from the layout by eye
Capacitors 4
×2100nF100nread from the layout by eye
×147nF47n50nF in the wiring diagram; read from the layout by eye
×1100pF100pread from the layout by eye
×247uF47uelectrolytic; read from the layout by eye
Diodes 2
×21N601N60read from the layout by eye
×11N40011N4001read from the layout by eye
Transistors 2
Q12N404A2N404Aread from the layout by eye
Q22N35652N3565read from the layout by eye
Potentiometers 2
HarmonicsA100KA100kPotentiometerread from the layout by eye
BalanceA50KA50kPotentiometerread from the layout by eye

Other boards based on the Interfax Harmonic Percolator