Beiträge von Mario

Mario

Nobody could help?

Mario

I fixed the problem! I forgot to solder the jumper between R14 and Q5. Here is my measurements now :

Voltage in the junction : 2,85V

IC
Pin number | Voltage
1 | nc
2 | 3,44V
3 | 3,44 V
4 GND
5 | 0,7 V
6 | 2,25 V
7 | 9,20 V
8 | nc

Transistors, order is Collector - Base - Emitter

Q1 9,10V 1,34V 1,50V
Q2 7,08V 2,25V 2,0V
Q3 7,75V 0 0
Q4 7,75V 0 0
Q5 9,10V 7,75V 8,20V

Are those valid values? When i turn much the Sensitivity to the right, i hear a little sound (i believe it's a F note)...but it seems to be working.

Mario

Nobody can help? ???

Mario

Hi,
i've built The Compressor Dyna but it does not work at all.
I've measured the voltage on IC and the transistor, that's what i've got:

All voltages are measured with potentiometer at total right position.

Voltage in the junction : 0,5V (i did not understand well where to measure...maybe)

IC
Pin number | Voltage
1 | nc
2 | 0,5 V
3 | 0,5 V
4 GND
5 | 0,62 V
6 | 0,4 V
7 | 1,38 V
8 | nc

Transistors, order is Collector - Base - Emitter

Q1 1,36V 0,25V 0(no conn?)
Q2 9V 0,4V 0(no conn?)
Q3 1,97V 0 0
Q4 2V 0 0
Q5 1,35V 1,97V 1,37V

What could the problem be?

Two images of the circuit...the resolution is not the best...i'll find a nice camera soon

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