[WIham] schematic tripp lite pr 40

[David Wendt]

>From a quick web-surf I found reference to the PR40 using a 723 regulator chip. This is an old design regulator chip that tends to work a lot like a silicon fuse. I have fixed a lot of power supplies by just replacing this chip. Use a socket and it will save you even more time the next time around. You can probably use an Astron schematic as a reference guide and get about 95% of what is happening on your power supply. There is a repeater builder web site that is a good source of this type of info.
 
73,
 
Dave    N9GQ

--- On Fri, 1/8/10, mike <mham at newnorth.net> wrote:


From: mike <mham at newnorth.net>
Subject: [WIham] schematic tripp lite pr 40
To: wiham at mailman.qth.net
Date: Friday, January 8, 2010, 3:26 PM


Does anyone know how to get schematic for tripp lite ? Seems they won't help you.  I'm fighting with one, need help. Thanks for any info.  Mike W9BHL at ARRL.NET   pr 40 is 13.8 V supply.
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