Enclosure not stated · 2 knobs

Fred Briggs Diamanté

Based on the Diamond Fred Briggs Diamanté Compressor

Category: Compressor
Controls: Comp · Vol
Price: see vendor

Read the post at Revolution Deux Schematic image

From the vendor

The blog author's simplification of the Diamond Compressor: the same vactrol opto compressor and LM358 side chain, with the buffers removed or simplified and the tilt EQ left out, leaving only Comp and Volume controls.

Schematic

The schematic is in the post. Open it at Revolution Deux. No KiCad fragment has been drawn for this circuit yet.

Parts list 43 rows

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

One electrolytic cap in the power section has no value written beside it.
The power-section diode has no part number.

Ref	Value	Normalized	Type	Notes
Resistors 18
R1	100	100		supply; read from the schematic by eye
R2	10K	10k		VB divider; read from the schematic by eye
R3	10K	10k		VB divider; read from the schematic by eye
R4	1M	1M		read from the schematic by eye
R5	1M	1M		to VB; read from the schematic by eye
R6	100K	100k		read from the schematic by eye
R7	1K	1k		read from the schematic by eye
R8	470K	470k		to VB; read from the schematic by eye
R9	3.3K	3.3k		read from the schematic by eye
R10	6.8K	6.8k		read from the schematic by eye
R11	10K	10k		read from the schematic by eye
R12	470K	470k		to VB; read from the schematic by eye
R13	100K	100k		read from the schematic by eye
R14	100K	100k		read from the schematic by eye
R15	470K	470k		to VB; read from the schematic by eye
R16	220K	220k		read from the schematic by eye
R17	220K	220k		read from the schematic by eye
R18	3.3K	3.3k		vactrol LED; read from the schematic by eye
Capacitors 15
C1	47u	47u		electrolytic, VB filter; read from the schematic by eye
C2	100n	100n		read from the schematic by eye
C3	?	?		electrolytic, supply filter; read from the schematic by eye
C4	100n	100n		input; read from the schematic by eye
C5	330n	330n		read from the schematic by eye
C6	100n	100n		read from the schematic by eye
C7	1u	1u		read from the schematic by eye
C8	100p	100p		read from the schematic by eye
C9	100n	100n		read from the schematic by eye
C10	2.2n	2.2n		read from the schematic by eye
C11	15n	15n		read from the schematic by eye
C12	3.3n	3.3n		read from the schematic by eye
C13	10n	10n		read from the schematic by eye
C14	10n	10n		read from the schematic by eye
C15	2.2u	2.2u		electrolytic; read from the schematic by eye
Diodes 3
D1	?	?		supply protection; 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 2
Q1	2N5088	2N5088		read from the schematic by eye
Q2	2N5088	2N5088		read from the schematic by eye
ICs 2
U1	OP275	OP275		read from the schematic by eye
U2	LM358	LM358		read from the schematic by eye
Potentiometers 2
Comp	A100K	A100k	Potentiometer	rheostat; read from the schematic by eye
Vol	A100K	A100k	Potentiometer	read from the schematic by eye
Other 1
LDR1	VTL5C3	VTL5C3		vactrol; read from the schematic by eye