Enclosure not stated · 3 knobs

Boss OD-3

Based on the Boss OD-3 Overdrive· 3 other boards clone it

Category: Overdrive· Distortion Boost and Overdrive
Controls: Drive · Tone · Level
Price: see vendor
Tags: Distortion Boost and Overdrive

Open the schematic at Experimentalists Anonymous

Schematic

The schematic is the archived file. Open it at Experimentalists Anonymous, or browse its folder.

Parts list 83 rows

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Ref	Value	Normalized	Type	Notes
Resistors 39
R6	1k	1k		read from the schematic by eye
R7	100k	100k		read from the schematic by eye
R8	10k	10k		read from the schematic by eye
R9	100k	100k		read from the schematic by eye
R10	1M	1M		read from the schematic by eye
R11	4.7k	4.7k		read from the schematic by eye
R12	12k	12k		read from the schematic by eye
R13	4.7k	4.7k		read from the schematic by eye
R14	12k	12k		read from the schematic by eye
R15	6.8k	6.8k		read from the schematic by eye
R22	1M	1M		read from the schematic by eye
R23	150k	150k		read from the schematic by eye
R24	1k	1k		read from the schematic by eye
R25	47k	47k		read from the schematic by eye
R26	4.7k	4.7k		read from the schematic by eye
R31	22k	22k		read from the schematic by eye
R32	22k	22k		read from the schematic by eye
R33	1M	1M		read from the schematic by eye
R34	10k	10k		read from the schematic by eye
R35	10k	10k		read from the schematic by eye
R36	220k	220k		read from the schematic by eye
R37	2.7k	2.7k		read from the schematic by eye
R38	3.3k	3.3k		read from the schematic by eye
R39	100k	100k		read from the schematic by eye
R40	10k	10k		read from the schematic by eye
R42	10k	10k		read from the schematic by eye
R43	10k	10k		read from the schematic by eye
R44	330k	330k		read from the schematic by eye
R45	330k	330k		read from the schematic by eye
R46	100k	100k		read from the schematic by eye
R47	10k	10k		read from the schematic by eye
R48	3.3k	3.3k		read from the schematic by eye
R49	220k	220k		read from the schematic by eye
R50	6.8k	6.8k		read from the schematic by eye
R51	470r	470		read from the schematic by eye
R52	2.7k	2.7k		read from the schematic by eye
R53	33k	33k		read from the schematic by eye
R54	1k	1k		read from the schematic by eye
R55	2.2k	2.2k		read from the schematic by eye
Capacitors 24
C5	10uF	10u		read from the schematic by eye
C6	10uF	10u		read from the schematic by eye
C7	.018uF	18n		read from the schematic by eye
C8	.0068uF	6.8n		read from the schematic by eye
C12	1uF	1u		read from the schematic by eye
C13	.033uF	33n		read from the schematic by eye
C14	10uF	10u		read from the schematic by eye
C15	1uF	1u		read from the schematic by eye
C16	.012uF	12n		read from the schematic by eye
C17	.022uF	22n		read from the schematic by eye
C20	47uF	47u		read from the schematic by eye
C21	1uF	1u		read from the schematic by eye
C22	.01uF	10n		read from the schematic by eye
C23	.056uF	56n		read from the schematic by eye
C24	.47uF	470n		read from the schematic by eye
C27	100uF	100u		read from the schematic by eye
C28	.047uF	47n		read from the schematic by eye
C29	.018uF	18n		read from the schematic by eye
C30	1uF	1u		read from the schematic by eye
C31	.056uF	56n		read from the schematic by eye
C32	1uF	1u		read from the schematic by eye
C33	.47uF	470n		read from the schematic by eye
C34	.0012uF	1.2n		read from the schematic by eye
C35	10uF	10u		read from the schematic by eye
Diodes 7
D6	1N4001	1N4001		labelled 1N4001 for the d6/d7 pair; read from the schematic by eye
D7	1N4001	1N4001		labelled 1N4001 for the d6/d7 pair; read from the schematic by eye
D9	1N914	1N914		read from the schematic by eye
D10	1N914	1N914		read from the schematic by eye
D11	1N914	1N914		read from the schematic by eye
D12	1N914	1N914		read from the schematic by eye
×2	Diode	DIODE		no part number given; on the gates of the 2SK118 switching FETs q4 and q9; read from the schematic by eye
Transistors 9
Q1	2SC2458-GR	2SC2458-GR		read from the schematic by eye
Q4	2SK118	2SK118		JFET switch; read from the schematic by eye
Q8	2SK184-GR	2SK184-GR		JFET; read from the schematic by eye
Q9	2SK118	2SK118		JFET switch; read from the schematic by eye
Q10	2SK184-GR	2SK184-GR		JFET; read from the schematic by eye
Q11	2SA1048	2SA1048		read from the schematic by eye
Q13	2SK184-GR	2SK184-GR		JFET, differential pair; read from the schematic by eye
Q14	2SK184-GR	2SK184-GR		JFET, differential pair; read from the schematic by eye
Q15	2SK184-GR	2SK184-GR		JFET; read from the schematic by eye
ICs 1
×1	M5218AL	M5218AL		dual op amp, no designator drawn; read from the schematic by eye
Potentiometers 3
Drive	100kA	A100k	Potentiometer	read from the schematic by eye
Tone	10kB	B10k	Potentiometer	read from the schematic by eye
Level	100kB	B100k	Potentiometer	read from the schematic by eye

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