[ARC5] High current 28VDC power supply?

JAMES FALLS radio-tuber at att.net
Wed Dec 28 21:51:24 EST 2022


Voltages - my BC-375 had jumpers you reconfigured depending the incoming voltage (24/28). I always assumed this was done so the voltages in the transmitter were  within a certain range and performance would be as expected by the ops. 

Jim Falls K6FWT 

> On Dec 28, 2022, at 13:53, Ken <kgordon2006 at frontier.com> wrote:
> 
> 
> I am thinking of the correct charging voltage for a 12.6 V battery. 
> 
> My reading, and what I have used for years, is 14.4 V...for charging.
> 
> As I remember it, "float" voltage is 13.6:
> V.
> 
> Double those for 2 series-connected batteries: thus 28.8 for charging, 27.2 for float.
> 
> I got the above data from a battery-manfacturer's website in their support section.
> 
> I also remember reading some time ago that for most efficient operation of dynamotors, 32 V is "good" but have never tried that myself...yet.
> 
> Ken W7EKB
> 
> 
> 
> Sent via the Samsung Galaxy S21 5G, an AT&T 5G smartphone
> 
> 
> -------- Original message --------
> From: Charles via ARC5 <arc5 at mailman.qth.net>
> Date: 12/28/22 12:55 (GMT-08:00)
> To: arc5 at mailman.qth.net
> Subject: Re: [ARC5] High current 28VDC power supply?
> 
> Isn't military power spec 24-32 VDC (compatible with "24 volt" vehicle 
> systems)? So why would you need exactly 28.8 VDC?
> 
> 
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