Snubber circuit for use in an uninterruptible power supply

Details Snubber circuit for use in an uninterruptible power supply Snubber circuit for use in an uninterruptible power supply

1983-08-22

1984-12-11

Pellinen, A. D.

Electrical transmission or interconnection systems

Plural supply circuits or sources

Substitute or emergency source

307131, 307584, 363 56, H02J 900, H02M 712

Patent

active

044880588

ABSTRACT:
A circuit for eliminating current transients in a switching circuit of an uninterruptible power supply having a main source of AC signals and an inverter for supplying AC signals from a DC source including gating device operated in response to receiving signals representing the failure of the main source of AC signals and the occurrence of a current transient in the AC output of the inverter. Operation of the gating device enables high frequency clock signals to synchronously energize a MOSFET which applies the AC output signals over the inverter to a load dissipating the current transients. The circuit includes a transformer operated by the high frequency clock signals to switch the MOSFET at a high frequency enabling the current transients to be eliminated in a minimum amount of time.

REFERENCES:
patent: 4058758 (1977-11-01), Peterson
patent: 4079443 (1978-03-01), Udvardi-Lakoo et al.
patent: 4400625 (1983-08-01), Hussey
patent: 4438356 (1984-03-01), Fleischer
patent: 4438486 (1984-03-01), Ferraro

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