Does anybody have a diagramm for the power section for the op-amps? If i remove U8 (red circle), one by one op-amps are blown. U8 could be a shunt regulator. I want to now, how the Voltage is generated for the amps, and how much voltage it should have. If i connect the black lead to bat - and the red lead to the op-amp i measure on + 25VDC and on - 23VDC.
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Iam not familiar with this circuit, thats why i asked for a diagram, which is nearly same layout.
Found a Potentiometer close to the regulator. Its set to minimum 23,4V. I can increase the voltage with this potentiometer.
Iam not sure, but there are also some BA4558 installed, the max voltage in the datasheet ist +-18V, so i expect that the output of the regulator is still to high.
Found a Potentiometer close to the regulator. Its set to minimum 23,4V. I can increase the voltage with this potentiometer.
Iam not sure, but there are also some BA4558 installed, the max voltage in the datasheet ist +-18V, so i expect that the output of the regulator is still to high.
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