Re: tripp lite pr-25 (Reg Board Retrofit Available) Although you can't really tell by the number of group posts I make... I'm pretty busy right now. But... if you don't receive a copy of the Tripp Lite Power Supply diagram... I might have one in my files. With enough simple email begging I'll write myself a note to look for it and make it available if/when found.
Also... I sell a number of my replacement Astron Power Supply Regulator Boards to/for non Astron Supplies. So many in fact that I've added an addition section to the revised instruction sheet to address placing the board into Tripp Lite, Pyramid and Vista type power supplies. Although there is no specific other brand model information in the additional section... the information given would help you figure out if my or another regulator board would be an easy fit/fix. Email me direct if you'd like a free copy of my Regulatoar Board instructions in pdf file format. cheers, skipp skipp025 at yahoo.com www.radiowrench.com > "Al Wolfe" <[EMAIL PROTECTED]> wrote: > > Ian, > If the PR-25 is anything like the PR-40 then it uses the ubiquitous 723 > regulator circuit that has been around for 30 years. Most of the highly > touted Astrons use the 723 circuit so an Astron circuit might be a good > place to start. Data sheets for the 723 are available on the web. (Hint. Put > a socket in for the 723.) The ARRL Handbook usually has 723 circuits in it. > > I was given a PR-40a that took a lightning hit and was being thrown > away. Replacing the shorted rectifiers, pass transistors, and exploded 723 > brought it back to life. The power transformer runs a bit warmer than I > would have expected. I believe that to be because Tripp Lite uses cheap > transformers without enough iron in them. Anyhow, it has run 24/7 for a > couple of years now since the repairs so assume it's fixed. YMMV. > > Al, K9SI > > > > tripp lite pr-25 > > Posted by: "Ian Miller" [EMAIL PROTECTED] va2ir > > Date: Thu Dec 14, 2006 4:55 pm ((PST)) > > > > Hi all > > > > Looking for a schematic for a PR-25 tripp lite power supply. > > > > Can anyone help? > > > > Contact me off list at > > > > va2ir at securenet dot net > > > > Thanks > > > > 73 > > Ian >
