Re: Astron Power Supply Repair

Apr 15, 2017 0 Replies


>


> > > >
> >> > >>> I have an Astron RS-35M with a shorted output transisitor. It uses 4
> >>> 2N3771's
> >>> made by Motorola in parallel. My question is: does Astron match output
> >>> transistors or will any Motorola 2N3771 balance out OK with the other 3
> >>> output
> >>> transistors? Thanks
> >>> Bob
> >
> > This is a little old, but Astron power supplies are still around. I
> > have had a couple of the regulator IC's go bad, but never a pass
> > transistor. I would first suspect a short external to the transistor!
> >
> Then why reply to it?
>
> The guy who restarted this thread didn't even bother to say anything, just
> took a 20 year old post and reposted it.
>
> There was no question or comment.

Michael-



Surely someone is interested in the discussion. As I mentioned, there are a lot of the Astron analog power supplies around. The design has only slightly evolved since the 1980's, and they are still being produced.



Fred


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