H - Electricity – 02 – M
Patent
H - Electricity
02
M
321/92
H02M 7/155 (2006.01) H02M 7/162 (2006.01)
Patent
CA 1167917
49,027 ABSTRACT OF THE DISCLOSURE A regulated DC power supply has a converter hav- ing a plurality of switches which, upon proper regulation of their conduction, rectify an AC current. The converter produces a current feedback signal. A reference generator produces a plurality of adjustable reference signals each representative of one value of a load current and produces a predetermined, standby, reference signal representative of a standby load current. One of the adjustable refer- ence signals, the standby reference signal, and the cur- rent feedback signal are added to produce a control sig- nal. The control signal is compared to a signal repre- sentative of the AC source voltage. Firing signals, used to regulate the conduction of the switches, are produced in response to the existence of a predetermined relation- ship therebetween. In the event that all of the adjust- able reference signals have a value of zero for a prede- termined period of time, the firing signals will be inhib- ited from regulating the conduction of the switches.
381472
Oldham And Company
Westinghouse Electric Corporation
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