I do this all the time. Buy open fram surplus DC power supplies rated at 15.0 volts and drop it with one diode to 14.2 volts constant voltage or two diodes to 13.6 volts.
Bob, WB4APR On Mon, Apr 26, 2021 at 7:44 PM Bill Dube via EV <[email protected]> wrote: > > A simple resistor won't limit the output voltage when the current tapers > off. (When the load resistance becomes larger.) It will still go to 16+ > volts and ruin your battery. > > A simple solution might be to place two, perhaps three, large diodes > (rectifiers) in series with the output. > > You can easily find a diodes (or perhaps a rectifier bridge that can > wired to make two diodes, just use the + and - terminals,) that will > handle the 10 amp output. Ordinary diodes will drop ~0.7 volts each. > > Bill D. > > On 4/27/2021 10:12 AM, Lawrence Rhodes via EV wrote: > > This might be a crude fix but some sort of variable resistor that can > > tolerate 10 amps at 16.5v might work. There is even a place to easily put > > the resistor for easy access. The only pot on the control board doesn't > > seem to change anything. Maybe using Ohm's Law the right value within a > > range might be found. Lawrence Rhodes > > _______________________________________________ > > Address messages to [email protected] > > No other addresses in TO and CC fields > > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > > ARCHIVE: http://www.evdl.org/archive/ > > LIST INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org > > > > _______________________________________________ > Address messages to [email protected] > No other addresses in TO and CC fields > UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub > ARCHIVE: http://www.evdl.org/archive/ > LIST INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org _______________________________________________ Address messages to [email protected] No other addresses in TO and CC fields UNSUBSCRIBE: http://www.evdl.org/help/index.html#usub ARCHIVE: http://www.evdl.org/archive/ LIST INFO: http://lists.evdl.org/listinfo.cgi/ev-evdl.org
