Improved design of the uninterruptable power supply unit for powering of network devices

Paper describes suggestions on the improvement of the common On-line structure of the uninterruptible power supply units used for powering of network devices. According to these suggestions a prototype circuit able to deliver the output power up to 150 W was constructed. The topology was optimized in order maximum efficiency was achieved when the output is fed by an accumulator in order the operating time was as long as possible.