5012H oscilloscope repair
Channel: Mc Elec
Date: 2021-03-17

This oscilloscope failed from 400V despite the fact that it was described as having to withstand 600 V at its input. The protection circuit  (470k ohm serial resistor and two inverted diodes) wasn't very efficient.  Fortunately the voltage measurements issues solved with an OPA 365 operational amplifier changing.
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