Mike, I have standardized on one part, the 122NQ030R made by International Rectifier / Vishay. The datasheet is here: <www.vishay.com/docs/93210/93210122.pdf> This Schottky diode has an extremely low forward voltage drop, and it can handle 120 amperes. I generally use the "R" suffix version, where the mounting foot is the anode and the 1/4-20 screw is the cathode. I mount the diode on a short piece of copper bar, which is then bolted to the positive terminal of the power supply. This allows me to float the battery on an Astron power supply, but prevents backfeed if the AC power fails. Digi-Key sells this item for about $24 apiece.
73, Eric Lemmon WB6FLY -----Original Message----- From: [email protected] [mailto:[EMAIL PROTECTED] On Behalf Of Mike Dietrich Sent: Saturday, August 02, 2008 3:18 PM To: [email protected] Subject: Re: [Repeater-Builder] Re: Dual battery system any idea of a part number for this type schotky diode for this purpose? mike
