Most open frames are adjustable with a little 10-turn. On Mon, Apr 26, 2021 at 7:22 PM Robert Bruninga via EV <ev@lists.evdl.org> wrote:
> 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 <ev@lists.evdl.org> > 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 ev@lists.evdl.org > > > 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 ev@lists.evdl.org > > 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 ev@lists.evdl.org > 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 > -------------- next part -------------- An HTML attachment was scrubbed... URL: <http://lists.evdl.org/private.cgi/ev-evdl.org/attachments/20210426/dbb1d3ea/attachment.html> _______________________________________________ Address messages to ev@lists.evdl.org 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
