I brought up the idea a bit ago of having a dedicated thread for known good voltages for the projects. It seemed at least some folks thought it might help, but then I got sidetracked and it went to the back of my mind. Anyway, I still think it could be a useful resource and I just happen to have to voltages for my Stage Fright (which by-the-way, I love) sitting at hand, so here goes.
Stage Fright:
Supply voltage in: 9.4
IC1: (TL074)
1 4.67
2 4.67
3 4.25
4 9.33
5 4.64
6 4.65
7 4.65
8 4.67
9 4.64
10 4.55
11 0
12 4.62
13 4.65
14 4.64
IC2: (TL062)
1 Moving (.69 to 8.7)
2 4.65
3 2.8 to 6.5 or so
4 0
5 4.69
6 4.68
7 3 to 6 range
8 9.35
IC3: (NJM13700D)
1 1.16 to 1.27
2 0.291
3 4.57
4 4.57
5 5.72
6 0.31
7 5.6 to 5.78
8 4.58
9 4.59
10 5.64 to 5.7
11 9.16
12 5.63 to 5.73
13 4.58
14 4.58
15 0.38
16 1.13 to 1.27
IC4:
1 1.12 to 1.3
2 0.286
3 4.61
4 4.61
5 5.72
6 0.3
7 5.61 to 5.78
8 4.58
9 4.56
10 5.66
11 9.15
12 5.58 to 5.69
13 4.58
14 4.58
15 0.317
16 1.14 to 1.28
IC5:
1 1.11 to 1.3
2 0.29
3 4.63
4 4.61
5 5.64
6 0.4
7 5.68 to 5.75
8 4.58
9 4.60
10 5.75
11 9.23
12 5.60 to 5.76
13 4.62
14 4.61
15 0.363
16 1.14 to 1.28
Q1: (2N3904)
E 3.90 to 3.98
B 4.56
C 9.14
Q2: (2N5457)
G 0
S 1.184
D 3.90 to 3.98
Q3: (2N3906)
E 4.56
B 3.90 to 3.98
C 1.13 to 1.38
Great idea. And nice job starting with the build that is my white whale, I have successfully f'd up three stage frights with the fourth on the way (two were me trying to make things "better", and one's possessed).
I'm feeling pretty good about my Doppelganger. It's Ian/AlanP's 2.1d board.
-all ICs TLxxxCN
-all LEDs light up the same intensity
-rates on 1 o'clock
-spans, color, blend maxed
-square, slow to the right
-antiphase, true up
-phase on (I think ::) )
-one lfo (green LEDs light in unison, I suppose that's one lfo?)
Source: 9.33
IC1 (TL074):
1-3: 4.29
4: 8.59
5: 3.8-5.2
6: 3.7-4.6
7: 3.6-4.7
8: 2.7-6.8
9: 3.8-5.2
10: 3.27-5.5
11: 0
12: 3.16-5.63
13: 3.6-5.3
14: 2.1-7
IC2 (TL072)
1: 3.7-4.5
2: 3.7-4.9
3: 3.8-5.2
4: 0
5: 3.8-5.1
6: 3.8-5.2
7: 3.8-5.2
8: 8.6
IC3 (TL074)
1-3: 4.1
4: 8.1
5: 4.0
6: 4.1
7: 4.1
8: 4.1
9: 4.1
10: 4.0
11: 0
12: 4.1
13: 4.4
14: 4.1
IC4 (TL072)
1-2: 4.1
3: 3.3
4: 0
5: 4.1
6: 4.1
7: 4.1
8: 8.04
Maybe a mod could sticky this so it gets more views and posts.
can someone post a SHO voltages??
might be worth creating a google spreadsheet or something that is linked to a sticky?
Rob, what are the pots positions that yield those voltages? Everything dimed?
Quote from: GermanCdn on August 27, 2014, 04:45:56 PM
Great idea. And nice job starting with the build that is my white whale, I have successfully f'd up three stage frights with the fourth on the way (two were me trying to make things "better", and one's possessed).
Maybe the new one will play nice and go together easily. If you don't mind telling, what were you working on to make it better? I've put the CV control connections in mine, but haven't gotten around to doing anything with it yet.
Quote from: muddyfox on August 29, 2014, 07:03:48 PM
Rob, what are the pots positions that yield those voltages? Everything dimed?
It's been a bit since I took them and I can't remember where I had it set. If it's like I normally do, then it would either be with both at noon, or with "balls" at noon and "speed" at zero.
Mine also has the Univibe mod caps in there right now, but I doubt that'll change the voltage readings.
I've finished up my Harbinger build and took the measurements for the voltages, so here they are. A few notes, I've subbed for most of the transistors, BC550, BC517, and a FJN598J for the JFET. The oscillator pair are 2N5088 though. I've got it done with the filter board as I'm using an 18V brick to power it. The readings were taken with the Intensity all the way up and the gain trimmer in the middle. I don't actually know where the offset trimmer is because I've got a multi-turn trimmer in there and I can't see where it's at. ~ ==> oscillating.
Voltage in 17.48
Voltage at regulator output 14.69
Q1: BC550
E: 1.05
B: 1.44
C: 2.14
Q2: BC550
E: 1.55
B: 2.14
C: 4.33
Q3: BC550
E: 3.74
B: 4.33
C: 13.62
Q4: BC550
E: 5.16
B: 5.54
C: 17.5
Q5: BC550
E: 4.55
B: 5.15
C: 12.94
Q6: BC550
E: 5.15
B: 5.54
C: 17.49
Q7: BC550
E: 4.55
B: 5.15
C: 12.94
Q8: BC550
E: 5.13
B: 5.52
C: 17.49
Q9: BC550
E: 4.53
B: 5.13
C: 12.95
Q10: BC550
E: 6.48
B: 6.98
C: 17.48
Q11: 2N5088
E: 8.1 ~
B: 7 ~
C: 14.69
Q12: 2N5088
E: 7.54
B: 8.1 ~
C: 14.69
Q13: BC517 Dependent on trimmers
E: 4.5 ~
B: 8.5 - 11
C: oscillating around 5
Q14 FJN598J
G: 9.4mV
S: 326mV
D: 17.49V
this is a fantastic thread!
I took the readings on my Naughty Fish to put up in another thread, so I figured I should drop them in here.
Mine's the 2014 version. I don't think that'll make a difference.
Pots are both at 12:00. Toggles are set to LP, Down, Hi
The input voltage is at 9.25V
IC1:
1 0V
2 0V
3 0V
4 -8.23V
5 0V
6 0V
7 0V
8 8.66V
IC2:
1 ~80mV drifting
2 22mV
3 22mV
4 -8.25V
5 3.44V
6 2.57V
7 6.48V
8 8.66V
IC3:
1 0V
2 0V
3 0V
4 -8.25V
5 0V
6 0V
7 0V
8 8.66V
IC4:
1 1.37V
2 4.62V
3 0V
4 -3.88V
5 -8.24V
6 2.55V
7 1.41V
8 8.66V
Vactrol 1:
1 6.48V
2 4.93V
Resistor side both pins at 0V
Vactrol 2:
1 6.48V
2 4.93V
Resistor side both pins at 0V
If a voltage read less than 1mV, I put it at zero.
Pork Chop Suey Cider
Voltages:
Q1 2N7000
G 6.8v
S 8.2v
D 9.1v
Q2 2N2484
C 4.1v
B 1.2v
E 0.6v
Q3 2N2484
C 4.8v
B 2.2v
E 1.6v
Q4 2N2484
C 4.2v
B 4.8v
E 9.1v
Q5 2N2484
C 2.2v
B 1.2v
E 0.6v
Q6 2N2484
C 4.8v
B 2.2v
E 1.6v
Q7 2N2484
C 9.1v
B 4.8v
E 4.2v
IC1 LF353P
1 4.5v
2 4.5v
3 4.5v
4 0v
5 4.5v
6 4.5v
7 4.5v
8 9.1v
IC2 LM388P
1 4.5v
2 4.5v
3 4.5v
4 0v
5 4.5v
6 4.5v
7 4.5v
8 9.1v
And since I'm on autowahs, here's the voltages for my Autobahn.
All knobs at 12:00
Vin = 9.22V
Regulator:
Vout 5.04V
Gnd 0V
Vin 8.46V
Q1
G 3.85V
S 4.40V
D 8.55V
Q2
E 0.287V
B 0.35V
C 5.04V
Q3
E 1.68V
B 0.287V
C 5.04V
IC1:
1 4.23V 14 4.23V
2 4.23V 13 4.23V
3 4.22V 12 4.23V
4 8.56V 11 0V
5 4.23V 10 4.23V
6 4.23V 9 4.23V
7 0.465V 8 4.11V
IC2:
1 1.68V 16 1.68V
2 151mV (unstable) 15 160mV (unstable)
3 4.23V 14 4.23V
4 4.23V 13 4.23V
5 5.42V 12 5.42V
6 0V 11 8.56V
7 5.42V 10 5.42V
8 4.23V 9 4.23V
Third Eye Pedals Muff Gun
Voltages:
Q1
C 4.2v
B 0.8v
E 0.2v
Q2
C 4.1v
B 0.6v
E 0.0v
Q3
C 4.6v
B 0.5v
E 0.1v
Q4
C 4.6v
B 0.7v
E 0.1v
Q5
C 5.8v
B 1.5v
E 1.0v
Grind Customs FX TSM680 MK2
Voltages:
Q1
C 3.9v
B 0.6v
E 0.0v
Q2
C 5.6v
B 0.5v
E 0.0v
Q3
C 3.7v
B 0.6v
E 0.0v
Q4
C 5.2v
B 1.7v
E 1.1v
Black Horse Effect Duplex Drive
Voltages:
Q1
C 9.2v
B 6.0v
E 5.5v
Q2
C 4.7v
B 0.8v
E 0.1v
Q3
C 3.9v
B 0.6v
E 0.0v
Q4
C 4.8v
B 0.7v
E 0.2v
Q5
C 9.3v
B 5.5v
E 5.0v
Q6
C 4.8v
B 0.7v
E 0.2v
LM1458
1 4.7v
2 4.7v
3 4.2v
4 0
5 4.4v
6 4.7v
7 4.7v
8 9.4v
VIPFx Pastie Drive
Voltages:
Q1 J201
G 4.5v
B 4.6v
D 9.4v
Q2 J201
G 4.5v
S 4.6v
D 9.4v
JRC4580
1 4.7v
2 4.7v
3 4.7v
4 0
5 4.7v
6 4.7v
7 4.7v
8 9.4v
OftenFX Supreaux Deux PCB
Charge pump to 12v
Voltages:
Q1 J201
G 0v
S 0.4v
D 11.8v
Q2 J201
G 0v
S 0.4v
D 11.7v
Q3 J201
G 0v
S 0.4v
D 11.9v
Serendipity
Voltages:
IC1 AD712
1 4.7v
2 4.7v
3 4.5v
4 0
5 4.7v
6 4.7v
7 4.7v
8 9.5v
424 Fuzz
Voltages:
IC1 JRC4558
1 4.4v
2 4.4v
3 4.4v
4 0v
5 4.4v
6 4.4v
7 4.4v
8 8.9v