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Comb Filter

BruteClaw·Analog-Synth·Unfinished Designs/Comb_Filter/Comb_Filter.kicad_pcb

Comb Filter PCB layout, top view — open source board by BruteClaw
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About the Comb Filter PCB

Comb Filter is an open source PCB design by BruteClaw, published on GitHub under the GPL-3.0 license. It is a 2-layer board measuring 100 × 110 mm, with 168 components from 36 distinct parts.

Other key parts include the TL074. By type, the board carries 77 resistors, 44 capacitors, 17 connectors and 4 ICs.

It belongs with the audio designs in this gallery.

From the project

EuroRack sytle analog synthasizer designs

These are designs for EuroRack compatable synthasizer modules.

Each module is designed as a seperate project in KiCAD Each folder includes a BOM from Mouser.com, the Gerber Files if you just want to have a board printed and a PDF of the schematic.

I have taken insparation from all over the web including Music From Outer Space, Yusynth and Look Mom no Computer. Some designs are outright copies of their schematic with my board layout design.

Main components on the Comb Filter

TL074

Comb Filter bill of materials (BOM)

168 components, 36 distinct parts — part numbers from the project's BOM.

QtyPartRefs
4
TL074
U1, U2, U3, U4
12
AudioJack1_Switch
J1, J3, J4, J5, J6, J7, J8, J9 +4
1
Conn_02x05_Odd_Even
J2
4
Conn_01x07
J14, J15, J16, J17
10
PTL20
FADE1, FADE2, FADE3, FADE4, FADE5, FADE6, FADE7, FADE8 +2
8
100k
RV1, RV3, RV4, RV7, RV8, RV11, RV12, RV15
8
20k
RV2, RV5, RV6, RV9, RV10, RV13, RV14, RV16
2
0.47uF
C1, C28
6
100pF
C2, C3, C4, C27, C29, C32
5
0.01uF
C5, C9, C14, C33, C38
3
0.047uF
C6, C12, C16
2
0.0015uF
C7, C34
2
820pF
C8, C13
1
22uF
C10
5
0.0047uF
C11, C15, C18, C19, C22
4
0.022uF
C17, C21, C23, C30
2
470pF
C20, C26
6
0.0022uF
C24, C25, C31, C35, C36, C37
2
22uF
C39, C44
4
100uF
C40, C41, C42, C43
Show 16 more
QtyPartRefs
18
33k
R1, R2, R3, R4, R5, R7, R9, R15 +10
9
15k
R6, R12, R27, R29, R42, R43, R55, R56 +1
10
10k
R8, R10, R16, R22, R24, R26, R33, R38 +2
7
150k
R11, R20, R32, R48, R50, R62, R73
11
220
R13, R14, R28, R31, R45, R46, R57, R58 +3
4
56k
R17, R18, R19, R53
5
180k
R21, R35, R51, R67, R74
2
68k
R34, R61
2
100k
R37, R63
2
91k
R47, R60
1
64k9
R52
1
4k7
R65
1
6k8
R68
1
220k
R69
1
1k5
R75
2
330
R76, R77

Comb Filter design files

The KiCad project lives in the BruteClaw/Analog-Synth repository on GitHub; these links point at the commit this page was built from.

Comb Filter: common questions

How big is the Comb Filter PCB?

The Comb Filter measures 100 × 110 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Comb Filter?

168 components, from 36 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Comb Filter design files?

From the BruteClaw/Analog-Synth repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Comb Filter design in my own project?

Yes, under the terms of its GPL-3.0 license, which BruteClaw chose for the repository.

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