masterleous Posted March 23, 2006 Report Share Posted March 23, 2006 Hello all users,I need some help in my project of UPS, i found some basic conecpt of UPS on NET, which is basically a 12 volts to 220/120 VAC Inverters, these types of circuits have a big problem with them, when a battery is fully charged, UPS give 220 VAC, after some time when Battery goes to its 50%, than UPS give 180-190 VAC, and when battery goes to it minimum, UPS give less than 160 VAC. So UPS is only efficient when battery is fully charged.I found some ideas from net of UPS continuously giving 220 VAC till battery goes to 30-40%, but not find any circuit of that type of UPS.Any circuit idea/schematic..........Thanks,masterleous Quote Link to comment Share on other sites More sharing options...
masterleous Posted March 31, 2006 Author Report Share Posted March 31, 2006 No reply from any user............ :'(................... Quote Link to comment Share on other sites More sharing options...
ante Posted April 1, 2006 Report Share Posted April 1, 2006 Hi,You have to give some more info of what you are powering from this UPS. A standard SMPS PC PSU will have no problems with the voltage drop, some works from 96 to 275VAC. But it’s perhaps not a PC you like to run from the UPS. It might also be a problem caused by bad choice of battery types or size. Quote Link to comment Share on other sites More sharing options...
steven Posted April 1, 2006 Report Share Posted April 1, 2006 :)what are those large hevey transformers in the ups as i scored one its a smart ups system and ive now got 2 large transformers i got from a total of 2 ups now Quote Link to comment Share on other sites More sharing options...
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