JFET parallel looper

effect pedal project by IvIark

Here's the JFET parallel looper effect pedal project from IvIark.

This project has been described using terms like blend, mixer, schematic, splitter, stripboard, utility, and vero and is reportedly verified, meaning many hobbyists have already completed this project and verify that the instructions are without issue.

Beyond the specs and details found on this page, you'll want to check out these schematic or stripboard resources too.

Project Resources

Parts List

  • C1
    100n
  • C2
    1u
  • C3
    1u
  • C4
    1u
  • C5
    1u
  • C6
    100n
  • C7
    100n
  • C8
    100n
  • P1
    100k Channel
  • P2
    100k Channel
  • P3
    100k Channel
  • R1
    2M2
  • R2
    100k
  • R3
    10k
  • R4
    10M
  • R5
    100k
  • R6
    10k
  • R7
    6k8
  • R8
    100k
  • R9
    10k
  • R10
    1M
  • R11
    1M
  • R12
    1M
  • R13
    2M2
  • T1
    J201
  • T1 (Alt)
    2N5457
  • T1 (Alt)
    JFET_N
  • T2
    J201
  • T2 (Alt)
    2N5457
  • T2 (Alt)
    JFET_N
  • T3
    J201
  • T3 (Alt)
    2N5457
  • T3 (Alt)
    JFET_N
  • T4
    J201
  • T4 (Alt)
    2N5457
  • T4 (Alt)
    JFET_N
  • U1
    9V

Similar transistors & Potential Alternatives

Can't find an exact match for the recommended transistors in this project within your stash? Or maybe you just feel like experimenting. Use these tables below to get started finding a suitable or otherwise interesting transistor substitution.

There may be 2 alternatives for the J201 mentioned above in the parts list for this project. These suggestions were derived by considering the original component's FETType, CntlChType, Vgs, Vds, and Id values and finding comparables in our database. These alternatives are suggestions for further exploration (fun!) and have not been tested in the context of this project. You can also to suit your preferences.

J201
more info
CntlChType
N
channel
FETType
JFET
Id
0.001
A
Pd
0.625
W
Tj
150
°C
Vds
40
V
Vgs
1.5
V
MMBFJ201
more info
CntlChType
N
channel
FETType
JFET
Id
0.001
A
Pd
0.35
W
Tj
150
°C
Vds
40
V
Vgs
1.5
V

There may be 2 alternatives for the 2N5457 mentioned above in the parts list for this project. These suggestions were derived by considering the original component's FETType, CntlChType, Vgs, Vds, and Id values and finding comparables in our database. These alternatives are suggestions for further exploration (fun!) and have not been tested in the context of this project. You can also to suit your preferences.

2N5457
more info
CntlChType
N
channel
FETType
JFET
Id
0.005
A
Pd
0.625
W
Tj
150
°C
Vds
25
V
Vgs
2.5
V
2N5953
more info
CntlChType
N
channel
FETType
JFET
Id
0.005
A
Pd
0.36
W
Tj
150
°C
Vds
30
V
Vgs
2.5
V