It is so simple, just a transformer, rectifier and filter.
Add an isolation diode between supply and battery.

73
Glenn
WB4UIV

On 9/5/2022 10:25 AM, kn7sfz wrote:
WOW!  I for one would love to see that project covered in QST!

de kn7sfz



On 9/4/2022 11:15 PM, Charles via ARC5 wrote:

For the small loads mentioned here, that approach is a good one, although I have read that battery life may be limited. Unfortunately for larger SLA or flooded batteries, and switchers too, the price increases more than proportionately ;)

It was actually cheaper for me to buy some of the components for the brute force PS than to buy batteries (and switchers).



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-- 
-----------------------------------------------------------------------
Glenn Little                ARRL Technical Specialist   QCWA  LM 28417
Amateur Callsign:  WB4UIV            [email protected]    AMSAT LM 2178
QTH:  Goose Creek, SC USA (EM92xx)  USSVI, FRA, NRA-LM    ARRL TAPR
"It is not the class of license that the Amateur holds but the class
of the Amateur that holds the license"