I have had a 35-amp Astron on my workbench for years, and I can short the red and black together quickly (which happens when you aren't fussy about how many projects you have going at one time) and the supply will shut down and NOT blow the fuse - This is an adjustable supply with both voltage and current controls - I haven't tried it lately with the current control at full, but I assume it would be the same. I also haven't kept the leads together for a long time, lately, but I do remember trying it years ago just to see if it would hold down - and it did.
Making the SCR fire is a black magic that shouldn't be misconstrued or misunderstood this close to the winter solstice... Merry Christmas, everyone. At 02:44 PM 12/24/08 -0500, you wrote: >I have an old Bullet power supply built from a kit (anyone remember those?) >that uses the 723. You can short the output time and time again and it >simply folds back. No harm, no foul. That's why I was wondering. I've never >tried that with an Astron (and probably won't now). > >Chuck >WB2EDV > > >----- Original Message ----- >From: "Bob M." <msf5kg...@yahoo.com> >To: <Repeater-Builder@yahoogroups.com> >Sent: Wednesday, December 24, 2008 2:32 PM >Subject: Re: [Repeater-Builder] Re: Astron P/S question > > >>I think they do, but only if the supply is putting out current to the load >>and the current exceeds the value they've set for it. The crowbar firing >>definitely exceeds the current limit but it's so sudden and complete that >>the design and component values just cause the fuse to instantaneously >>blow. >> >> Bob M. >> > > >------------------------------------ > > > >Yahoo! Groups Links > > > > - Adam -
