My RS35M supply schematic says it's an MCR225 SCR. I suspect that any SCR capable of dealing with the current rating of the supply will work just fine.
My schematic was dated Jan 2000 as well, and it came with a new supply that I bought around 2002. I suspect that all the component differences are due to product improvement (aka bug fixes in the original design). In this regard, they seem to have unique schematics for each model year (almost like Motorola). RM-series is the rack mount version of the RS-series. Add the letter "M" and you have meters. Change the first letter from R to V and you have one with front panel adjustment pots (V=variable). SS-series are switching power supplies. I don't recall if they come in rack-mount versions. Bob M. ====== --- Gary <[EMAIL PROTECTED]> wrote: > Yeah, the RS and RM series are electrically the same > however, the schematics > vary depending upon the year of print. I have the > RS-50M schematic from 2000 > off the RB website. I requested a schematic from the > rocket scientists at > Astron. What they sent is dated 1996 and the two > have significant differences > between them not to mention a third I found > elsewhere dated 1997 (again, some > differences). I wouldn't be so concerned except the > differences are in > component ID's and values. I'm hoping someone has a > more recent copy > available-- perhaps two out of three (or four) will > agree. The protective SCR > is shorted in mine. I can buy the part from Astron > next week but I was hoping > to find it via Newark, Mouser, or the like. The SCR > part number varies > depending upon what schematic you look at but most > call for a "SO565J". I have > not yet found the manufacturer of this part number > nor a source outside of > Astron. > Gary > > mch wrote: > > > The RM-50M has been around for many years (at > least 20). It's the Rack > > Mount version of the RS-50M. So, the schematics > should be the same. > > > > Joe M. > > > > Mike Morris wrote: > > > > > > At 05:01 PM 05/26/06, you wrote: > > > >Does anyone have the schematic from an Astron > RM-50M that they can scan > > > >and email to me? Yes, I've already called > Astron. If any member of this > > > >list can scan and email the schematic it would > be appreciated. A common > > > >file type like .doc or .pdf is preferred. > > > >Thanks, > > > >Gary > > > > > > Is the RM-50M one of the newer models, or did > you mean the RS-50M ? > > > > > > If it's the RS, then look at the Astron page at > www.repeater-builder.com > > > > > > Mike __________________________________________________ Do You Yahoo!? Tired of spam? Yahoo! Mail has the best spam protection around http://mail.yahoo.com Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/Repeater-Builder/ <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
