UNINTERRUPTIBLE POWER SUPPLY UNIT Russian patent published in 2020 - IPC H02J7/34 

FIELD: electrical engineering.

SUBSTANCE: invention relates to electrical engineering, namely, to uninterrupted power supply (UPS) with redundancy of electric power converter with buffer acid-lead sealed accumulator battery (ACB), and can be used for power supply of electronic equipment for various purposes. In known UPS, having ACB, comparator with resistors at inputs and hysteresis resistor, current comparator circuit feed stabilizer, power amplifier, relay, a first diode and a limiting resistor, further includes a second and a third diodes, a normally open button, an “ACB” switch and a “Network” switch, wherein the second diode and the button are connected to a serial circuit which is connected between the positive terminal ACB and the positive input of the stabilizer, and the third diode is connected between the plus of the converter and the positive input of the stabilizer.

EFFECT: possibility of UPS switching on in case of no mains voltage.

1 cl, 1 dwg