Handy Board : 3748


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Subject:	Polarity of PowerJack from HB und Charger Board
Newsgroups:	lugnet.robotics.handyboard
Date:	Sun, 3 May 1998 18:30:55 GMT
Original-From:	Stefan Pick <STEFAN.SCHOETTLER@T-ONLINE.DEnomorespam>
Viewed:	1461 times

Hi I am wondering about the Polarity of the Power Jack at the Handyboard and the charger board. At the HB the Pin in the middle is ground. At the charger board the outside Ring is ground.Can anybody tell me why it is different ? Thanks stefan.schöttler@t-online.de

Message has 1 Reply:

		Re: Polarity of PowerJack from HB und Charger Board
on the interface/charger, since there's a bridge rectifier immediately normalizing the input jack voltage -- regardless of polarity -- it kind of doesn't matter which polarity you use. there is a discrepancy between the int/charger schematic and (...) (27 years ago, 3-May-98, to lugnet.robotics.handyboard)

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