We have a power chain that runs from an alternator, to a 24->12 dc regulator, to a battery charging circuit, to a 12 v battery.
We were thinking of using this circuit minus the ac-dc converter part for the charging circuit. http://www.circuitsgallery.com/2013/04/automatic-battery-charger-controller.html And this regulator: http://www.amazon.com/HOSSEN%C2%AE-Converter-Regulator-Step-Down/dp/B00BWKXTUU
From what I've heard, the battery should be charged at somewhere between 2 and 10 amps?
Is it enough protection for the battery/regulator to stick a 10 amp fuse and a 24v zener to ground between then alternator and the regulator? Also, do we need filtering circuitry or will the regulator take care of most of the noise?