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Update time: 2023-11-15 15:06:52
Creation time: 2019-08-28 23:09:11
Description

Description

Use the big Letter GROOVY PCB, it works, but is a proto board that uses mini pots - expression pedal jack inputs control drive not EQ - but that is an easy mod - It was a simple mistake but, the circuit never had an expresion jack and I never used one - I just goofed up and put it on the wrong pot - the voltage control is a work of art on this circuit!
Design Drawing

Design Drawing

schematic diagram
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PCB
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ID Name Designator Footprint Quantity
1 POT 50K,B50K,EQ50K,VOLTAGE ALPS_POT_KIT 4
2 1nf C1 RAD-0.1 1
3 100uf C2 CAP-D3.0XF1.5 1
4 10uf C3,C4,C6,C9 CAP-D3.0XF1.5 4
5 22nf C5,C7 RAD-0.1 2
6 100nf C8,C10,C11 RAD-0.1 3
7 DIODE D1,D2 DIODE_AXIAL 2
8 DIODE D3 DIODE-1N4001 1
9 . EXP1,EXP2MIDDLE,EXP3GN HDR-1X1/2.54 3
10 GND GND,GND2 HDR-1X1/2.54 2
11 INPUT P1 HDR-1X1/2.54 1
12 OUTPUT P2 HDR-1X1/2.54 1
13 jk1in P3 HDR-1X1/2.54 1
14 9VDC P4 HDR-1X1/2.54 1
15 kj1out P5 HDR-1X1/2.54 1
16 jk2in P6 HDR-1X1/2.54 1
17 jk2out P7 HDR-1X1/2.54 1
18 Header-Male-2.54_1x1 P8,P9 HDR-1X1/2.54 2
19 2n5458 Q1 TO92-INLINE 1
20 2N5172 Q2 TO92-INLINE 1
21 10m R1 AXIAL-0.4 1
22 10k R2,R5,R7,R15 AXIAL-0.4 4
23 3.3k R3 AXIAL-0.4 1
24 100 R4 AXIAL-0.4 1
25 15k R6 AXIAL-0.4 1
26 100k R8,R17 AXIAL-0.4 2
27 300k R9,R14 AXIAL-0.4 2
28 5.1k R10,R16 AXIAL-0.4 2
29 2m R11 AXIAL-0.4 1
30 22k R12 AXIAL-0.4 1
31 1m R13 AXIAL-0.4 1
32 2.2K R18 AXIAL-0.3 1
33 220 R21 AXIAL-0.4 1
34 LM1458 U1 DIP-8 1 DPJ1jBuM4
35 2.1MMJACK U2 PJ-102A 1

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