equalizer - EasyEDA open source hardware lab

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STD equalizer

Mode: Editors' pick

Update time： 2023-05-22 21:30:46

Creation time： 2020-01-23 07:05:32

Description

an equalizer for stereo channel with 10 adjustable bands.

Design Drawing

schematic diagram

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PCB

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BOM

ID	Name	Designator	Footprint	Quantity
1	10u	C1,C2,C3,C4	22_5MM CAP SMD	4
2	6u4	C5,C13	15MM CAP SMD	2
3	82n	C6,C14	R1206	2
4	100n	C7,C9,C10,C12,C18,C20,C35,C37,C38,C39,C44,C46,C47,C48,C49,C51,C52,C53,C60,C62,C63,C64,C65,C66,C67,C68,C73,C74,C75,C76,C77,C78,C79,C80,C81,C82	R1206	36
5	2n7	C8,C11,C29,C32,C56,C59	R1206	6
6	3u2	C15,C22	10MM CAP SMD	2
7	39n	C16,C23	R1206	2
8	3n3	C17,C24	R1206	2
9	1n5	C19,C21	R1206	2
10	1u6	C25,C33	5MM CAP SMD	2
11	22n	C26,C34	R1206	2
12	47n	C27,C30	R1206	2
13	680p	C28,C31	R1206	2
14	10n	C36,C45,C54,C57	R1206	4
15	27n	C40,C42	R1206	2
16	330p	C41,C43	R1206	2
17	5n6	C50,C61	R1206	2
18	180p	C55,C58	R1206	2
19	74279213	L1,L2,L3,L4,L9,L10,L11,L12,L13,L14,L15,L16,L17,L18	R1206	14
20	L_in	P1	3MMHOLE_PTH	1
21	L_out	P2	3MMHOLE_PTH	1
22	R_in	P3	3MMHOLE_PTH	1
23	R_out	P4	3MMHOLE_PTH	1
24	AGND	P5,P6	3MMHOLE_PTH	2
25	PGND	P7	3MMHOLE_PTH	1
26	v+	P8	3MMHOLE_PTH	1
27	v-	P9	3MMHOLE_PTH	1
28	100k	R1,R2,R6,R7,R13,R16,R21,R23,R26,R28,R31,R33,R36,R38,R41,R43,R46,R48,R51,R53,R56,R58	R1206	22
29	3k3	R3,R4,R8,R9	R1206	4
30	110k	R11,R18	R1206	2
31	470	R12,R14,R17,R19,R22,R24,R27,R29,R32,R34,R37,R39,R42,R44,R47,R49,R52,R54,R57,R59	R1206	20
32	0r	R60	R1206	1
33	10k	R5,R10,R15,R20,R25,R30,R35,R40,R45,R50,R55	DUAL POT	11
34	OPA1612AIDR	U1,U2	SOIC8	2
35	OPA1604AID	U5,U6,U7,U8,U9	SOIC14N	5

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Project Members

Lenke Gyurgyoka