wasn't Motorola fond of using two types of diodes, one with case = anode and
the other with case = cathode ?

they used red paint for the part # on one style, and black paint for the
other one

part numbers were almost identical, too, as I recall


----- Original Message ----- 
From: Bob M.
To: [email protected]
Sent: Thursday, September 18, 2008 12:02 PM
Subject: Re: [Repeater-Builder] Re: Micor TPN1110A power supply parts ID



The diodes are probably very similar to what an automobile alternator uses.
Of course, finding the exact replacements could still be difficult. They're
probably (minimally) 50V, 50A, but I'd look for something a bit bigger. The
supply is good for 25A at 14V nominal. According to the schematic, the
anodes (the ends with the arrows) are connected to the case and ground.
Push-in diodes came both ways, mainly because many alternators use three of
each inside, and they can only ground the case of three of them.


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