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PostPosted: Fri Aug 31, 2007 2:04 am 
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Joined: Mon Mar 20, 2006 1:36 pm
Posts: 765
Location: Oslo, Norway
Revised Envelope Filter Board

Image

Revised Envelope Filter Schematic

Image

Revised Envelope Filter Parts List

R1 - 2.2M
R2 - 10K
R3 - 100K
R4 - 100K
R5 - 22K
R6 - 22K
R7 - 220K
R8 - 430K
R9 - 220K
R10 - 220K
R11 - 10K
R12 - 1M
R13 - 2.2K
R14 - 100K
R15 - 22K
R16 - 10K
R17 - 4.7K LED

VR1 - A100K (Range)
VR2 - A100K (Level)
VR3 - A100K (Manual)

IC1 - 4558 or other dual op-amp

D1 & D2 - 1N914 or 1N4148
D3 - 1N4001
D4 - LED

C1 - .01uf
C2 - 10uf Electrolytic
C3 - .022uf (0.1uf for Bass Guitar)
C4 - .022uf (0.1uf for Bass Guitar)
C5 - .047uf
C6 - .1uf
C7 - 4.7uf Electrolytic
C8 - 1uf Electrolytic
C9 - 100uf Electrolytic

Current Draw: 5.45ma


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PostPosted: Tue Nov 30, 2010 11:23 am 
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Joined: Wed Apr 26, 2006 5:14 pm
Posts: 8659
Location: Truckee, CA
Revised Envelope Filter (2010)

Envelope Filter & Fixed Wah PCB

Image

Image

Envelope Filter Schematic

Image

Parts List

Resistors
R1 - 1M
R2 - 10K
R3 - 1M
R4 - 22K
R5 - 150K
R6 - 1K
R7 - 1K
R8 - 10K
R9 - 22K
R10 - 22K
R11 - 22K
R12 - 1K
R13 - 1K
R14 - 10K
R15 - 10K
R16 - 22K
R17 - 22K
R18 - 100K
R19 - 1K
R20 - 1M
R21 - 150K
R22 - 22K
R23 - 10K
R24 - 22K
R25 - 22K
R26 - 4.7K (LED)

VR1 - B100K (Range)
VR2 - C250K (Sensitivity)
VR3 - B100K (Attack)
VR4 - A100K (Manual)

Semiconductors
Q1 - 2N5088 (2N3904, 2N2222)

IC1 - RC4558 (or other dual op-amp)
IC2 - JRC13600 (or other dual transconductance op-amp)

D1 & D2 - 1N914
D3 - 1N4001
D4 - LED

Capacitors
C1 - .047uf
C2 - 4.7uf Electrolytic
C3 - .01uf
C4 - .01uf
C5 - .01uf
C6 - .1uf
C7 - .1uf
C8 - 4.7uf Electrolytic
C9 - 4.7uf Elctrolytic
C10 - .001uf
C11 - 100uf Electrolytic
C12 - 4.7uf Electrolytic

_________________
MasterDelayer/Reverbrador/Ampaholic/TopJacker


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