Thanks for that added info Tom.. I appreciate it. - Mike
From: Repeater-Builder@yahoogroups.com [mailto:repeater-buil...@yahoogroups.com] On Behalf Of wb6dgn Sent: Monday, August 02, 2010 11:39 PM To: Repeater-Builder@yahoogroups.com Subject: [Repeater-Builder] Re: Astron 70Amp Supply The fan will come on at 120 degrees F, right heatsink temperature if I remember correctly so the supply will be a bit toasty before the fan comes on. There's also a thermal cutout at 190 degrees that will shut down the supply. Astron alludes to the "high junction operating temperatures" of the pass transistors in their service manual so, based on that comment, I would say that there is nothing to be concerned about. Tom DGN --- In Repeater-Builder@yahoogroups.com <mailto:Repeater-Builder%40yahoogroups.com> , "Michael Ryan" <mryan...@...> wrote: > > Ok Leroy, I will leave well enough alone. Thanks.. - Mike > > > > From: Repeater-Builder@yahoogroups.com <mailto:Repeater-Builder%40yahoogroups.com> > [mailto:Repeater-Builder@yahoogroups.com <mailto:Repeater-Builder%40yahoogroups.com> ] On Behalf Of Leroy A. M. Baptiste > Sent: Monday, August 02, 2010 4:16 PM > To: Repeater-Builder@yahoogroups.com <mailto:Repeater-Builder%40yahoogroups.com> > Subject: RE: [Repeater-Builder] Astron 70Amp Supply > > > > > > For years all my power supplies have been Astrons, > they are really some work horses. Believe me, if > it gets too hot, that fan will come on, providing > that there is not a fault in the thermal circuit. > They are great power supplies. > > -----Original Message----- > From: Repeater-Builder@yahoogroups.com <mailto:Repeater-Builder%40yahoogroups.com> > <mailto:Repeater-Builder%40yahoogroups.com> > [mailto:Repeater-Builder@yahoogroups.com <mailto:Repeater-Builder%40yahoogroups.com> > <mailto:Repeater-Builder%40yahoogroups.com> ] On > Behalf Of Michael Ryan > Sent: Monday, August 02, 2010 4:07 PM > To: Repeater-Builder@yahoogroups.com <mailto:Repeater-Builder%40yahoogroups.com> > <mailto:Repeater-Builder%40yahoogroups.com> > Subject: RE: [Repeater-Builder] Astron 70Amp > Supply > > Thanks Leroy..the cabinet is warmer that I like to > see even when the repeater is just in 'idle mode' > for long periods. - M > > From: Repeater-Builder@yahoogroups.com <mailto:Repeater-Builder%40yahoogroups.com> > <mailto:Repeater-Builder%40yahoogroups.com> > [mailto:Repeater-Builder@yahoogroups.com <mailto:Repeater-Builder%40yahoogroups.com> > <mailto:Repeater-Builder%40yahoogroups.com> ] On > Behalf Of Leroy A. M. Baptiste > Sent: Monday, August 02, 2010 4:03 PM > To: Repeater-Builder@yahoogroups.com <mailto:Repeater-Builder%40yahoogroups.com> > <mailto:Repeater-Builder%40yahoogroups.com> > Subject: RE: [Repeater-Builder] Astron 70Amp > Supply > > Do not worry too much about the fan, it will come > on if the temperature on the heat sink rises, you > will have to draw quite a bit of current > continuously to get it to come on. > > Leroy J39AI > > -----Original Message----- > From: Repeater-Builder@yahoogroups.com <mailto:Repeater-Builder%40yahoogroups.com> > <mailto:Repeater-Builder%40yahoogroups.com> > <mailto:Repeater-Builder%40yahoogroups.com> > [mailto:Repeater-Builder@yahoogroups.com <mailto:Repeater-Builder%40yahoogroups.com> > <mailto:Repeater-Builder%40yahoogroups.com> > <mailto:Repeater-Builder%40yahoogroups.com> ] On > Behalf Of Michael Ryan > Sent: Monday, August 02, 2010 3:56 PM > To: Repeater-Builder@yahoogroups.com <mailto:Repeater-Builder%40yahoogroups.com> > <mailto:Repeater-Builder%40yahoogroups.com> > <mailto:Repeater-Builder%40yahoogroups.com> > Subject: [Repeater-Builder] Astron 70Amp Supply > > I am using an ASTRON 70 amp ( un-metered ) > supply in my rack. It has a fan on it that I have > NEVER seen come on. Is there an internal > adjustment of some nature based on the ambient > temperature that can be maneuvered to make this > fan more 'useful? Thanks.. - Mike > > __________ Information from ESET NOD32 Antivirus, > version of virus signature database 5335 > (20100802) __________ > > The message was checked by ESET NOD32 Antivirus. > > http://www.eset.com <http://www.eset.com> > <http://www.eset.com <http://www.eset.com> > > > __________ Information from ESET NOD32 Antivirus, > version of virus signature database 5335 > (20100802) __________ > > The message was checked by ESET NOD32 Antivirus. > > http://www.eset.com <http://www.eset.com> > > __________ Information from ESET NOD32 Antivirus, > version of virus signature database 5335 > (20100802) __________ > > The message was checked by ESET NOD32 Antivirus. > > http://www.eset.com > > __________ Information from ESET NOD32 Antivirus, > version of virus signature database 5335 > (20100802) __________ > > The message was checked by ESET NOD32 Antivirus. > > http://www.eset.com <http://www.eset.com> > > > > > > __________ Information from ESET NOD32 Antivirus, version of virus signature > database 5335 (20100802) __________ > > The message was checked by ESET NOD32 Antivirus. > > http://www.eset.com > > > > __________ Information from ESET NOD32 Antivirus, version of virus signature > database 5335 (20100802) __________ > > > > The message was checked by ESET NOD32 Antivirus. > > > > http://www.eset.com > __________ Information from ESET NOD32 Antivirus, version of virus signature database 5335 (20100802) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com __________ Information from ESET NOD32 Antivirus, version of virus signature database 5335 (20100802) __________ The message was checked by ESET NOD32 Antivirus. http://www.eset.com
