I agree! One only know how much damage could have been created once the power supply died. I don't even know if it sent any power backwards, but no damage to the equipment. The donator of the batteries is a commercial broadcast technician as is his father, and has offered his knowledge in helping with the repeater. So this is all a good thing.
Mathew -----Original Message----- From: Q [mailto:[EMAIL PROTECTED] Sent: Friday, January 21, 2005 6:05 PM To: Repeater-Builder@yahoogroups.com Subject: Re: [Repeater-Builder] Powering the Repeater With Marine Batteries And also note that marine grade batteries wont last very long in standby duty,a little better than a car battery but not much. Its worth the extra money to buy gel cell type batteries designed for that type of duty.They are also totally sealed which may be required if used in your home or at a big tower site. Ever see a hydrogen explosion rip apart a battery? Also,pay attention to the recommended float voltages of the manufacturer,also a good idea to give them an equalizing charge monthly. I have run battery backup here for 27 years! Fuse everything! 73,Lee,N3APP Tony King, W4ZT wrote: >One of the best ways to manage the charging of your batteries is to use >a multi-mode charger designed to properly charge and maintain them. >Ibex <http://www.ibexmfg.com> carries two 3 mode chargers that are very >well suited for the job. If you look at their web page under the 12 >volt chargers, the last one listed also has load shedding capability. >That means that not only does it charge the batteries, but you can power >the receiver, controller and exciter (but not the PA) through the load >shedding switch and when the battery voltage drops, it will shut >everything down; saving your batteries from total depletion. > >Using a charger like this you will still need to isolate the output of >the AC power supply and the batteries. I personally prefer to do this >with hard relay contacts so that you don't have voltage drop through a >diode to contend with. Which ever way you choose, spend a little extra >to charge the batteries correctly and they will last a very long time >and be there when you need them. > >73, Tony W4ZT > > >w9mwq wrote: > > >>Last night my power supply took a dump! Good thing for backups. >>Anyways, what I am wanting to do is put 3 marine batteries together >>to run the power for the repeater with a charger to charge the >>batteries. If I use a 12 Volt Car charger, do I risk the chance of >>noise, or would the batteries filter that. What would be a good >>source to charge these batteries? The power supply that will be >>taking the place of the worthless Pyramid supply will be an Astron >>52 Amp Rack Mount Supply. I have heard in the past that batteries >>have been charged with these power supplies, but not sure if this if >>true or not. Any ideas? Thanks. >> >>Mathew >> >> > > > > > > > > Yahoo! Groups Links 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/
