Ian,
A pair of big schotky(sp) diodes works very well for what you are trying
to do with very little voltage drop. Or just get a battery isolator at the
nearest RV place. But then I don't know how many RV places there are in
Biloela.
The negative side of the batteries are tied together and the positives
terminals go to the anodes of the diodes, their cathodes being tied
together. The cathodes then feed the load. Which ever battery is charged the
highest will supply current to the load. A discharged battery is isolated
from the load automatically and can't affect or load down the charged
battery. No switching or other fancy electronics involved. It's all
automatic.
As Bob, NO6B, mentioned, having the receiver on one battery and the
transmitter on another is the worst of the choices in that failure of either
system make you down. But, by using diode steering one battery system can be
completely flat or broken but you are still on the air.
Al, K9SI
Re: Dual battery system
Posted by: "Richard Bessey" [EMAIL PROTECTED] richard_viviotech
Date: Fri Aug 1, 2008 11:14 am ((PDT))
Ian,
If you find such a circuit to do this, let me know as I am curious how
this would work.
Regards,
Richard Bessey
System Administrator
Vivio Technologies
Phone: 509-956-3050 Ext. 1005
Kerincom wrote:
>
> Hi guys .I am wondering if anyone knows of good pages on dual
> batteries systems and comments on which of following questions is better
>
> I am wondering if having two batteries .one for the receiver and one
> for the TX each with its own solar regulator or
> A system where two batteries are charged by two separate regulators
> and the TX and rx run off one battery and when extended no solar
> period happens the repeater is switched to the second battery when the
> main drains below 10 or 11v and returned to the main when it charges
> back up
>
> Thank You,
> Ian Wells,
> Kerinvale Comaudio,
> 361 Camboon Road.Biloela.4715
> Phone 0749922574 or 0409159932
> www.kerinvalecomaudio.com.au <http://www.kerinvalecomaudio.com.au/>
