RC-Monster Forums - View Single Post

BrianG · 05.09.2008, 09:48 AM

Yeah, those car battery chargers are not clean DC. They do away with the capacitor filtering so you have pulsed DC. Also, they are unregulated. Since they have to be able to output ~14v at the rated current, the voltage output at lower currents can be quite a bit higher.

You probably could use one provided you add capacitor filtration and a linear regulator. Building a high current regulator can take some work though to get currents up to ~20A. Just easier IMO to get a PS that is already filtered and regulated for the price...

	(#7)
BrianG RC-Monster Admin Offline Posts: 14,609 Join Date: Nov 2005 Location: Des Moines, IA	05.09.2008, 09:48 AM Yeah, those car battery chargers are not clean DC. They do away with the capacitor filtering so you have pulsed DC. Also, they are unregulated. Since they have to be able to output ~14v at the rated current, the voltage output at lower currents can be quite a bit higher. You probably could use one provided you add capacitor filtration and a linear regulator. Building a high current regulator can take some work though to get currents up to ~20A. Just easier IMO to get a PS that is already filtered and regulated for the price...