http://www.8051projects.net/ Learn to make simple microcontroller projects, pic, 8051, avr and arm projects. download 8051 projects, tutorials, libraries, sample codes. join the microcontroller discussion forum and ask doubts regarding electronics. the best source for 8051 over internet. en-gb 2009-01-07T21:40:34-08:00 contact@nospam.com hourly 1 2000-01-01T12:00+00:00 http://www.8051projects.net/forum-t3215.html 2009-01-07T21:40:34-08:00 Hi all "Uninterruptible Power Supplies" By Alexander King, William Knight* An engineering tutorial designed to teach basic UPS (Uninterruptible Power Supplies) design and operation--covers rotary UPS systems and battery selection.download Link:The content of the post is hidden!Please Login to see the hidden post.If you are new to the website Please Signup!ThanksNisar Ahmed (Pakistan)M.Sc:Electronics/Instrumentation and Process ControlDeptt:R and DE_mail:nisar_sci@yahoo.com http://www.8051projects.net/forum-t3215.html 2009-01-07T21:40:34-08:00 hanin_andik this link isnt workong, rapid say error The file could not be found. Please check the download link. http://www.8051projects.net/forum-t3215.html 2009-01-07T21:40:34-08:00 Nisar Ahmed Plz download from herehttp://xinio.info/?http://ifile.it/4men8i/mcgraw-hill_-_uninterruptible_power_supplies_and_standby_power_systems.rarThanks and best regardsNisar Ahmed http://www.8051projects.net/forum-t3215.html 2009-01-07T21:40:34-08:00 Raj Mehta Its still showing error on download link. Error message "The file could not be found. Please check the download link." http://www.8051projects.net/forum-t3215.html 2009-01-07T21:40:34-08:00 Nisar Ahmed I check this link ok.http://xinio.info/?http://ifile.it/4men8i/mcgraw-hill_-_uninterruptible_power_supplies_and_standby_power_systems.rarThanksNisar Ahmed