Re: Amusing problem about DC polarity
- From: "Richard Henry" <rphenry@xxxxxxxx>
- Date: Fri, 9 Jun 2006 07:27:31 -0700
"siliconmike" <siliconmike@xxxxxxxxx> wrote in message
news:1149838180.937755.216870@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxx
Imagine a black plastic box that takes in DC power but has no polarity
markings on its power socket.
The problem is to experimentally determine the correct DC polarity
without opening the box and without letting the box die.
How close can we come?
I used to work in a lab that made portable x-ray machines.
.
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- Amusing problem about DC polarity
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