Enclosure not stated · 3 knobs

Electro Harmonix V1 Triangle Big Muff 1970 First PCB versionVerified

Based on the Electro-Harmonix Big Muff Pi· 73 other boards clone it

Category: Distortion
Controls: Sustain · Tone · Volume
Build: Vero· 19×17· 18 cuts, 5 links
Layout: Verified · Dirtbox Layouts marks it as built and working
Tags: Big Muff, Distortion, Electro Harmonix, Fuzz

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 Dirtbox Layouts. No KiCad fragment has been drawn for this circuit yet.

Parts list 26 rows

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Check before you build · 2 values the reader of this layout was not sure of

4nF next to D4 (column 13, rows E-H): printed clearly, unusual value
500pF x3 (columns 4, 9, 19): printed clearly, unusual value

Ref	Value	Normalized	Type	Notes
Resistors 9
×4	100K	100k		read from the layout by eye
×4	470K	470k		read from the layout by eye
×4	10K	10k		read from the layout by eye
×3	39K	39k		read from the layout by eye
×3	150Ω	150		read from the layout by eye
×2	22K	22k		read from the layout by eye
×1	2.7K	2.7k		read from the layout by eye
×1	1M	1M		read from the layout by eye
×1	1K	1k		read from the layout by eye
Capacitors 7
×7	1uF	1u		electrolytic; read from the layout by eye
×1	100uF	100u		electrolytic; read from the layout by eye
×3	500pF	500p		read from the layout by eye
×1	100nF	100n		read from the layout by eye
×1	10nF	10n		read from the layout by eye
×1	6.8nF	6.8n		read from the layout by eye
×1	4nF	4n		read from the layout by eye
Diodes 2
×4	1N4148	1N4148		D1-D4, legend: 1N4148/1N914; read from the layout by eye
D5	1N5817	1N5817		read from the layout by eye
Transistors 4
Q1	2N5133	2N5133		read from the layout by eye
Q2	2N5133	2N5133		read from the layout by eye
Q3	2N5133	2N5133		read from the layout by eye
Q4	2N5133	2N5133		read from the layout by eye
Potentiometers 3
Sustain	B100K	B100k	Potentiometer	read from the layout by eye
Tone	B100K	B100k	Potentiometer	read from the layout by eye
Volume	B100K	B100k	Potentiometer	read from the layout by eye
Switches 1
Switch	SPST	SPST		tone bypass; read from the layout by eye

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