"Dave Plowman (News)" wrote in message
...
In article ,
Arfa Daily wrote:
Most reverse protection diodes do fail short-circuit. It's unusual to
find one that survives when it does its basic job.

Eh? The usual way is a series diode and that won't fail if the battery is
reverse connected.

But not in this case as the OP said it is in parallel. I've seen loads of
battery equipment with parallel reverse polarity protection diodes. I think
the designers baulk at the losses involved in using a series diode, small
though they may be in the case of a DVM.

Dave