Electronics > Beginners

Does a diode really have a small current flow even when reverse biased

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David Hess:
A typical meter with a 10 megohm input resistance will read 100 picoamps/millivolt while typical diodes have a reverse leakage of nanoamps to microamps so reverse leakage can be very apparent even with basic instrumentation.

Raj:
still,his diode is normal

Nusa:
A pulldown resistor to ground on the power 1 line would ensure the leakage current from power 2 won't cause the line to float when power 1 is off. I bet that'll solve your issue.

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