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Input voltage tolerance? - anders@rosentorp.nu - 03.08.2020

Hi, I have measured the input tolerance by comparing tha actual voltages on pin L1 to L3 with the measured values.

It seems as L1 is +/- 1volt but L2 shows up to 7-8 volts to much compared to the measure value in the input pin.

Is this normal? 

/Anders