Green Ringer

effect pedal project by Dan Armstrong

Here's the Green Ringer effect pedal project from Dan Armstrong.

This project has been described using terms like dan armstrong, octave, stripboard, 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 stripboard resources too.

Project Resources

Parts List

  • C1
    47n
  • C2
    47n
  • C3
    47n
  • C4
    100u
  • C5
    100n
  • D1
    Diode
  • D2
    Diode
  • D3
    LED
  • R1
    2k2
  • R2
    560k
  • R3
    6k2
  • R4
    18k
  • R5
    160k
  • R6
    10k
  • R7
    10k
  • R8
    10k
  • R9
    1M5
  • R10
    22k
  • R11
    22k
  • R12
    68k
  • R13
    68k
  • R14
    47k
  • T1
    2N5088
  • T1 (Alt)
    2N5089
  • T2
    2N5088
  • T2 (Alt)
    2N5089
  • T3
    2N3906
  • 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 16 alternatives for the 2N5088 mentioned above in the parts list for this project. These suggestions were derived by considering the original component's hFE, Pol, Ic, Vcb, and Vce 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.

2N5088
more info
Cc
4
pF
ft
50
MHz
hFE
300
β
Ic
0.05
A
Pc
0.31
W
Pol
NPN
Tj
135
°C
TranMat
Si
Vcb
35
V
Vce
30
V
Veb
3
V
2N5088G
more info
Cc
4
pF
ft
50
MHz
hFE
300
β
Ic
0.05
A
Pc
0.625
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
35
V
Vce
30
V
Veb
3
V
3DG5088
more info
Cc
4
pF
ft
50
MHz
hFE
300
β
Ic
0.1
A
Pc
0.625
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
35
V
Vce
30
V
Veb
4.5
V
CMBT5088
more info
Cc
4
pF
ft
50
MHz
hFE
300
β
Ic
0.05
A
Pc
0.225
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
35
V
Vce
30
V
Veb
4.5
V
CMKT5088
more info
Cc
4
pF
ft
50
MHz
hFE
300
β
Ic
0.05
A
Pc
0.35
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
35
V
Vce
30
V
Veb
4.5
V
CMST5088
more info
Cc
4
pF
ft
50
MHz
hFE
300
β
Ic
0.05
A
Pc
0.275
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
35
V
Vce
30
V
Veb
4.5
V
ED1402D
more info
hFE
290
β
Ic
0.05
A
Pc
0.6
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
35
V
Vce
30
V
Veb
4
V
FMMT5088
more info
Cc
4
pF
ft
50
MHz
hFE
300
β
Ic
0.05
A
Pc
0.31
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
35
V
Vce
30
V
Veb
3
V
GES5088
more info
Cc
4
pF
ft
50
MHz
hFE
300
β
Ic
0.05
A
Pc
0.31
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
35
V
Vce
30
V
Veb
3
V
KMBT5088
more info
Cc
4
pF
ft
50
MHz
hFE
300
β
Ic
0.1
A
Pc
0.35
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
35
V
Vce
30
V
Veb
4.5
V
KST5088
more info
Cc
4
pF
ft
50
MHz
hFE
300
β
Ic
0.05
A
Pc
0.35
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
35
V
Vce
30
V
Veb
4.5
V
MMBT5088
more info
Cc
4
pF
ft
50
MHz
hFE
300
β
Ic
0.05
A
Pc
0.3
W
Pol
NPN
Tj
125
°C
TranMat
Si
Vcb
35
V
Vce
30
V
Veb
4
V
MMBT5088LT1G
more info
Cc
4
pF
ft
50
MHz
hFE
300
β
Ic
0.05
A
Pc
0.225
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
35
V
Vce
30
V
Veb
4.5
V
NSVMMBT5088LT3G
more info
Cc
4
pF
ft
50
MHz
hFE
300
β
Ic
0.05
A
Pc
0.23
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
35
V
Vce
30
V
Veb
4.5
V
PMST5088
more info
Cc
4
pF
ft
100
MHz
hFE
300
β
Ic
0.1
A
Pc
0.2
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
35
V
Vce
30
V
Veb
4.5
V
TMPT5088
more info
Cc
4
pF
hFE
300
β
Ic
0.2
A
Pc
0.225
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
35
V
Vce
30
V

There may be 20 alternatives for the 2N5089 mentioned above in the parts list for this project. These suggestions were derived by considering the original component's hFE, Pol, Ic, Vcb, and Vce 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.

2N5089
more info
Cc
4
pF
ft
50
MHz
hFE
400
β
Ic
0.05
A
Pc
0.31
W
Pol
NPN
Tj
135
°C
TranMat
Si
Vcb
30
V
Vce
25
V
Veb
3
V
2N5089G
more info
Cc
4
pF
ft
50
MHz
hFE
400
β
Ic
0.05
A
Pc
0.625
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
30
V
Vce
25
V
Veb
3
V
2SC3246
more info
Cc
17
pF
ft
130
MHz
hFE
400
β
Ic
1.5
A
Pc
0.9
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
30
V
Vce
25
V
Veb
6
V
2SC3439
more info
Cc
17
pF
ft
130
MHz
hFE
400
β
Ic
1.5
A
Pc
0.5
W
Pol
NPN
Tj
125
°C
TranMat
Si
Vcb
30
V
Vce
25
V
Veb
6
V
2SC5484
more info
Cc
17
pF
ft
130
MHz
hFE
400
β
Ic
1.5
A
Pc
0.6
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
30
V
Vce
25
V
Veb
6
V
BC319D
more info
Cc
4
pF
ft
100
MHz
hFE
400
β
Ic
0.15
A
Pc
0.31
W
Pol
NPN
Tj
135
°C
TranMat
Si
Vcb
30
V
Vce
25
V
Veb
5
V
BC510C
more info
Cc
6
pF
ft
200
MHz
hFE
420
β
Ic
0.2
A
Pc
0.36
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
30
V
Vce
25
V
Veb
5
V
BC510FC
more info
Cc
6
pF
ft
200
MHz
hFE
420
β
Ic
0.2
A
Pc
0.36
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
30
V
Vce
25
V
Veb
5
V
CMBT5089
more info
Cc
4
pF
ft
50
MHz
hFE
400
β
Ic
0.05
A
Pc
0.225
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
30
V
Vce
25
V
Veb
4.5
V
CMKT5089M10
more info
Cc
4
pF
ft
50
MHz
hFE
400
β
Ic
0.05
A
Pc
0.35
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
30
V
Vce
25
V
Veb
4.5
V
CMST5089
more info
Cc
4
pF
ft
50
MHz
hFE
400
β
Ic
0.05
A
Pc
0.275
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
30
V
Vce
25
V
Veb
4.5
V
ED1401E
more info
hFE
410
β
Ic
0.05
A
Pc
0.6
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
30
V
Vce
25
V
Veb
4
V
ED1501E
more info
hFE
410
β
Ic
0.05
A
Pc
0.6
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
30
V
Vce
25
V
Veb
4
V
FMMT5089
more info
Cc
4
pF
ft
50
MHz
hFE
400
β
Ic
0.05
A
Pc
0.31
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
30
V
Vce
25
V
Veb
3
V
GES5089
more info
Cc
4
pF
ft
50
MHz
hFE
400
β
Ic
0.05
A
Pc
0.31
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
30
V
Vce
25
V
Veb
3
V
KMBT5089
more info
Cc
4
pF
ft
50
MHz
hFE
400
β
Ic
0.1
A
Pc
0.35
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
30
V
Vce
25
V
Veb
4.5
V
MMBT5089
more info
Cc
4
pF
ft
50
MHz
hFE
400
β
Ic
0.05
A
Pc
0.3
W
Pol
NPN
Tj
125
°C
TranMat
Si
Vcb
30
V
Vce
25
V
Veb
4
V
MMBT5089LT1G
more info
Cc
4
pF
ft
50
MHz
hFE
400
β
Ic
0.05
A
Pc
0.225
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
30
V
Vce
25
V
Veb
4.5
V
PMST5089
more info
Cc
4
pF
ft
100
MHz
hFE
400
β
Ic
0.1
A
Pc
0.2
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
30
V
Vce
25
V
Veb
4.5
V
TMPT5089
more info
Cc
4
pF
hFE
400
β
Ic
0.2
A
Pc
0.225
W
Pol
NPN
Tj
150
°C
TranMat
Si
Vcb
30
V
Vce
25
V

There may be 225 alternatives for the 2N3906 mentioned above in the parts list for this project. These suggestions were derived by considering the original component's hFE, Pol, Ic, Vcb, and Vce 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. The first 25 alternatives are shown below in alphabetical order by partnumber. See the to suit your preferences.

2N3906
more info
Cc
5
pF
ft
250
MHz
hFE
100
β
Ic
0.2
A
Pc
0.31
W
Pol
PNP
Tj
135
°C
TranMat
Si
Vcb
40
V
Vce
40
V
Veb
5
V
2N2906E
more info
Cc
4.5
pF
ft
250
MHz
hFE
100
β
Ic
0.2
A
Pc
0.2
W
Pol
PNP
Tj
150
°C
TranMat
Si
Vcb
40
V
Vce
40
V
Veb
5
V
2N2906U
more info
Cc
4.5
pF
ft
250
MHz
hFE
100
β
Ic
0.2
A
Pc
0.2
W
Pol
PNP
Tj
150
°C
TranMat
Si
Vcb
40
V
Vce
40
V
Veb
5
V
2N3906-G
more info
ft
250
MHz
hFE
100
β
Ic
0.2
A
Pc
0.625
W
Pol
PNP
Tj
150
°C
TranMat
Si
Vcb
40
V
Vce
40
V
Veb
5
V
2N3906A
more info
Cc
4.5
pF
ft
250
MHz
hFE
100
β
Ic
0.2
A
Pc
1.5
W
Pol
PNP
Tj
150
°C
TranMat
Si
Vcb
40
V
Vce
40
V
Veb
5
V
2N3906BU
more info
Cc
4.5
pF
ft
250
MHz
hFE
100
β
Ic
0.2
A
Pc
0.625
W
Pol
PNP
Tj
150
°C
TranMat
Si
Vcb
40
V
Vce
40
V
Veb
5
V
2N3906C
more info
Cc
4.5
pF
ft
250
MHz
hFE
100
β
Ic
0.2
A
Pc
0.625
W
Pol
PNP
Tj
150
°C
TranMat
Si
Vcb
40
V
Vce
40
V
Veb
5
V
2N3906CSM
more info
Cc
5
pF
ft
200
MHz
hFE
100
β
Ic
0.2
A
Pc
0.31
W
Pol
PNP
Tj
135
°C
TranMat
Si
Vcb
40
V
Vce
40
V
Veb
5
V
2N3906E
more info
Cc
4.5
pF
ft
250
MHz
hFE
100
β
Ic
0.2
A
Pc
0.1
W
Pol
PNP
Tj
150
°C
TranMat
Si
Vcb
40
V
Vce
40
V
Veb
5
V
2N3906G
more info
Cc
4.5
pF
ft
250
MHz
hFE
100
β
Ic
0.2
A
Pc
0.55
W
Pol
PNP
Tj
125
°C
TranMat
Si
Vcb
40
V
Vce
40
V
Veb
5
V
2N3906N
more info
Cc
4.5
pF
ft
350
MHz
hFE
100
β
Ic
0.2
A
Pc
0.4
W
Pol
PNP
Tj
150
°C
TranMat
Si
Vcb
40
V
Vce
40
V
Veb
5
V
2N3906S
more info
Cc
4.5
pF
ft
250
MHz
hFE
100
β
Ic
0.2
A
Pc
0.35
W
Pol
PNP
Tj
150
°C
TranMat
Si
Vcb
40
V
Vce
40
V
Veb
5
V
2N3906TA
more info
Cc
4.5
pF
ft
250
MHz
hFE
100
β
Ic
0.2
A
Pc
0.625
W
Pol
PNP
Tj
150
°C
TranMat
Si
Vcb
40
V
Vce
40
V
Veb
5
V
2N3906TAR
more info
Cc
4.5
pF
ft
250
MHz
hFE
100
β
Ic
0.2
A
Pc
0.625
W
Pol
PNP
Tj
150
°C
TranMat
Si
Vcb
40
V
Vce
40
V
Veb
5
V
2N3906TF
more info
Cc
4.5
pF
ft
250
MHz
hFE
100
β
Ic
0.2
A
Pc
0.625
W
Pol
PNP
Tj
150
°C
TranMat
Si
Vcb
40
V
Vce
40
V
Veb
5
V
2N3906TFR
more info
Cc
4.5
pF
ft
250
MHz
hFE
100
β
Ic
0.2
A
Pc
0.625
W
Pol
PNP
Tj
150
°C
TranMat
Si
Vcb
40
V
Vce
40
V
Veb
5
V
2N3906U
more info
Cc
4.5
pF
ft
250
MHz
hFE
100
β
Ic
0.2
A
Pc
0.1
W
Pol
PNP
Tj
150
°C
TranMat
Si
Vcb
40
V
Vce
40
V
Veb
5
V
2N3906V
more info
Cc
4.5
pF
ft
250
MHz
hFE
100
β
Ic
0.2
A
Pc
0.1
W
Pol
PNP
Tj
150
°C
TranMat
Si
Vcb
40
V
Vce
40
V
Veb
5
V
2N4403
more info
Cc
9
pF
ft
200
MHz
hFE
100
β
Ic
0.6
A
Pc
0.31
W
Pol
PNP
Tj
135
°C
TranMat
Si
Vcb
40
V
Vce
40
V
Veb
5
V
2N4403BU
more info
Cc
8.5
pF
ft
200
MHz
hFE
100
β
Ic
0.6
A
Pc
0.625
W
Pol
PNP
Tj
150
°C
TranMat
Si
Vcb
40
V
Vce
40
V
Veb
5
V
2N4403G
more info
Cc
8.5
pF
ft
200
MHz
hFE
100
β
Ic
0.6
A
Pc
0.625
W
Pol
PNP
Tj
150
°C
TranMat
Si
Vcb
40
V
Vce
40
V
Veb
5
V
2N4403TA
more info
Cc
8.5
pF
ft
200
MHz
hFE
100
β
Ic
0.6
A
Pc
0.625
W
Pol
PNP
Tj
150
°C
TranMat
Si
Vcb
40
V
Vce
40
V
Veb
5
V
2N4403TAR
more info
Cc
8.5
pF
ft
200
MHz
hFE
100
β
Ic
0.6
A
Pc
0.625
W
Pol
PNP
Tj
150
°C
TranMat
Si
Vcb
40
V
Vce
40
V
Veb
5
V
2N4403TF
more info
Cc
8.5
pF
ft
200
MHz
hFE
100
β
Ic
0.6
A
Pc
0.625
W
Pol
PNP
Tj
150
°C
TranMat
Si
Vcb
40
V
Vce
40
V
Veb
5
V
2N4403TFR
more info
Cc
8.5
pF
ft
200
MHz
hFE
100
β
Ic
0.6
A
Pc
0.625
W
Pol
PNP
Tj
150
°C
TranMat
Si
Vcb
40
V
Vce
40
V
Veb
5
V