Thanks Guys
This whole mission is part of a UPS project I started years ago. You see, you can take any old UPS, and make it's run time longer by adding a big battery and throwing away the (normal) 7Ah battery that comes with these things.
The problem is to get the big battery charged. One little LM317T that these typical UPS come with ain't going to cut it to charge a 65Ah battery for example.
And I am talking cheap 12V 600VA UPS's here that are good for powering SMPS supplies as in modern TV's, Computers and lighting...no motors or linear transformers though. They will overheat and be damaged/burn out from the modified square wave they are fed with. These cheap ones are not true Sine Wave output.
So, back to the story.
The very same cheap UPS I bought all the Years back and installed on my relations farm in the middle of nowhere and coupled Solar charging together with Generator time at night charging huge truck batteries got these ungrateful people TV time that was not possible before without starting the Generator.
Hey, we can have TV in the day!!!
Okay, fair enough, a 600VA cheap UPS cannot do 600VA continuously on batteries. But it will be OK if used sparingly as far as load goes.
They were running 1 CRT TV, 1 TV decoder and maybe 1 light. Total of around 300VA every day. For around three Hours per day.
And my cheap UPS never blinked an eye.
So. back to the story. Again.
Seeing as ESKOM (our useless Power Utility) is pulling moves on us, I am going to get up to speed at last.
I need very little power here. I have purchased a "Mother" of a battery though to power the UPS. It's 65Ah of sealed lead acid battery with a 10 Year float life....
Running my Computer and the Modem and stuff, I am good for 8 Hours.
Charging....that is the reason why I started this thread. Fine flattening a battery...charging is another thing.
Anyway, 6 Amps DC sounds about right for this Toroidal to be happy with. It's strange how one sometimes forgets the Basics
Thanks Guys.
Regards,
tvtech