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DOD FX40B

Based on the DOD FX40B

Category: EQ / Filter· Tone Control and EQs
Price: see vendor
Tags: Tone Control and EQs

Open the schematic at Experimentalists Anonymous

Schematic

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Parts list 93 rows

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Check before you build · 3 values the reader of this schematic was not sure of

R1: printed '.2K' or '2K' under the .022uF label, read as 2K
R27: label looks like R37, assumed R27
C12: value overstruck, reads 0.33uF

Ref	Value	Normalized	Type	Notes
Resistors 45
R1	2K	2k		6400 Hz band; read from the schematic by eye
R2	100K	100k		read from the schematic by eye
R3	1K	1k		read from the schematic by eye
R4	1K	1k		read from the schematic by eye
R5	1K	1k		read from the schematic by eye
R6	1K	1k		read from the schematic by eye
R7	1K	1k		read from the schematic by eye
R8	1K	1k		read from the schematic by eye
R9	22K	22k		read from the schematic by eye
R10	10K	10k		read from the schematic by eye
R11	100K	100k		read from the schematic by eye
R12	22K	22k		read from the schematic by eye
R13	100K	100k		read from the schematic by eye
R14	22K	22k		read from the schematic by eye
R15	100K	100k		read from the schematic by eye
R16	22K	22k		read from the schematic by eye
R17	100K	100k		read from the schematic by eye
R18	22K	22k		read from the schematic by eye
R19	22K	22k		read from the schematic by eye
R20	100K	100k		read from the schematic by eye
R21	18K	18k		read from the schematic by eye
R22	22K	22k		read from the schematic by eye
R23	10K	10k		Q3 emitter resistor; R23 is printed twice (clash); read from the schematic by eye
R23	10K	10k		second R23, at U1B input; read from the schematic by eye
R24	22K	22k		read from the schematic by eye
R25	10K	10k		read from the schematic by eye
R26	1M	1M		read from the schematic by eye
R27	1M	1M		printed like R37 at the CD4007 (which clashes with the 4.7K R37); R27 is otherwise missing; read from the schematic by eye
R28	1M	1M		read from the schematic by eye
R29	22K	22k		read from the schematic by eye
R30	1M	1M		read from the schematic by eye
R31	10K	10k		read from the schematic by eye
R32	100K	100k		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	100K	100k		read from the schematic by eye
R36	10K	10k		read from the schematic by eye
R37	4.7K	4.7k		read from the schematic by eye
R38	470K	470k		read from the schematic by eye
R39	180K	180k		read from the schematic by eye
R40	10K	10k		read from the schematic by eye
R41	100K	100k		read from the schematic by eye
R42	1K	1k		read from the schematic by eye
R43	10K	10k		read from the schematic by eye
R44	100K	100k		read from the schematic by eye
Capacitors 22
C1	0.01uF	10n		read from the schematic by eye
C2	10uF	10u		electrolytic; read from the schematic by eye
C4	1uF	1u		read from the schematic by eye
C5	0.022uF	22n		read from the schematic by eye
C6	0.039uF	39n		read from the schematic by eye
C7	0.0022uF	2.2n		read from the schematic by eye
C8	0.0039uF	3.9n		read from the schematic by eye
C9	0.1uF	100n		read from the schematic by eye
C10	0.15uF	150n		read from the schematic by eye
C11	0.01uF	10n		read from the schematic by eye
C12	0.33uF	330n		read from the schematic by eye
C13	0.015uF	15n		read from the schematic by eye
C14	0.56uF	560n		read from the schematic by eye
C15	0.033uF	33n		read from the schematic by eye
C16	10uF	10u		electrolytic; read from the schematic by eye
C17	.047uF	47n		read from the schematic by eye
C19	1uF	1u		electrolytic; read from the schematic by eye
C20	0.001uF	1n		read from the schematic by eye
C21	.022uF	22n		read from the schematic by eye
C22	1uF	1u		electrolytic; read from the schematic by eye
C23	10uF	10u		electrolytic; read from the schematic by eye
C26	0.047uF	47n		read from the schematic by eye
Diodes 3
D1	1N4001	1N4001		read from the schematic by eye
D2	1N4148	1N4148		read from the schematic by eye
D3	1N4148	1N4148		read from the schematic by eye
Transistors 12
Q1	J113	J113		JFET switch; read from the schematic by eye
Q2	J113	J113		JFET switch; read from the schematic by eye
Q3	2N5088	2N5088		level buffer; Q3 is printed twice (clash); read from the schematic by eye
Q3	2N5088	2N5088		second Q3, 3200 Hz gyrator; read from the schematic by eye
Q4	2N5088	2N5088		read from the schematic by eye
Q5	2N5088	2N5088		read from the schematic by eye
Q6	2N5088	2N5088		read from the schematic by eye
Q7	2N5088	2N5088		read from the schematic by eye
Q8	2N5088	2N5088		read from the schematic by eye
Q9	2N5088	2N5088		LED driver; read from the schematic by eye
Q10	J111	J111		JFET, reverse-polarity/power switch; read from the schematic by eye
Q11	2N5088	2N5088		read from the schematic by eye
ICs 2
U1	LM1458	LM1458		dual op amp (U1A, U1B); read from the schematic by eye
U4	CD4007	CD4007		bypass switching logic; read from the schematic by eye
Potentiometers 8
Level	100K	100k	Potentiometer	P1; read from the schematic by eye
100 Hz	100K	100k	Potentiometer	P2 slider; read from the schematic by eye
200 Hz	100K	100k	Potentiometer	P3 slider; read from the schematic by eye
400 Hz	100K	100k	Potentiometer	P4 slider; read from the schematic by eye
800 Hz	100K	100k	Potentiometer	P5 slider; read from the schematic by eye
1600 Hz	100K	100k	Potentiometer	P6 slider; read from the schematic by eye
3200 Hz	100K	100k	Potentiometer	P7 slider; read from the schematic by eye
6400 Hz	100K	100k	Potentiometer	P8 slider; read from the schematic by eye
LEDs 1
D4	LED	LED		read from the schematic by eye