Re: Old Schlumberger console
« Reply #20 on: June 22, 2020, 12:36:22 PM »
other side


saint gillis

Re: Old Schlumberger console
« Reply #21 on: June 22, 2020, 03:06:11 PM »
Ah,  it doesn't look the same as TMC 4031... the 4031 has an inductor in a metal encapsulation.
I'm afraid you have to make some reverse engineering  to draw the schematic...
Also it looks you have a cut trace in the middle of one of the op amps...?


 

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