Uninterruptible power supply

Electrical transmission or interconnection systems – Plural supply circuits or sources – Substitute or emergency source

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Details

307 77, 320 56, 320 59, H02J 702, H02J 904

Patent

active

043408230

ABSTRACT:
An uninterruptible power supply including a rectifier for receiving a first AC power signal and converting the first AC power signal into a first DC power signal to produce a DC power output of the uninterruptible power supply, a battery for supplying a second DC power signal, a controlled rectifier for receiving a second AC power signal and converting the second AC power signal into a controlled power output, and a switch connected to receive the second DC power signal from the battery for producing the second DC power signal as the DC power output power when the first AC power signal is interrupted. Output terminals of the rectifier are connected in series with output terminals of the controlled rectifier and the battery, whereby the first DC power signal and the controlled power output are added and applied to the battery for charging thereof.

REFERENCES:
patent: 3694731 (1972-09-01), Cherry
SCR Handbook Chapter 8, Sec. 1 "(ii) Booster Connection"; J. Yamada; Oct. 30, 1966, (FIG. 8.4 and FIG. 8.5, pp. 168-169).

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