H - Electricity – 02 – J
Patent
H - Electricity
02
J
323/5
H02J 9/06 (2006.01)
Patent
CA 1314932
- 11 - OFF-LINE SWITCHER WITH BATTERY RESERVE Abstract An off-line switcher includes an auxiliary winding on the secondary side of the power transformer coupled by a power switch to a secondary voltage source in order to provide uninterruptible power to the output from either a primary AC or a secondary DC source. The power switches coupling both primary and secondary source voltages to the power transformers are driven at identical duty cycles by a common regulation control. Differing transformation ratios between primary and secondary sources of power define different operational ranges and determine flow of power based on the magnitude of the primary source of power.
534962
Eng Wing Keung
Schroeder Robert Edward
American Telephone And Telegraph Company
Kirby Eades Gale Baker
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