Regulator circuit and multi-output switching power unit using th

Details Regulator circuit and multi-output switching power unit using th Regulator circuit and multi-output switching power unit using th

1996-06-07

1998-04-28

Berhane, Adolf

Electric power conversion systems

Current conversion

With condition responsive means to control the output...

363 86, 323266, H02M 768

Patent

active

057453578

ABSTRACT:
A multi-output switching power unit which can substantially prevent an output power supply of an auxiliary output power circuit from dropping significantly when a load a is light and which has a reduced loss in the output path. A voltage up capacitor 20, a first diode 21, a second diode 22 and a series regulator 13 are provided in the auxiliary output power circuit 9 including a choke rectifier circuit 4. When the load a is light and an output voltage V2 of the auxiliary output power circuit 9 drops to below the predetermined voltage of the series regulator, the series regulator 13 is put into a conductively connected state. Then, an output of an output auxiliary coil 15 flows in the auxiliary output power circuit 9 to an auxiliary choking coil L2 as well as along a route passing through the voltage up capacitor 20, the second diode 22 and the series regulator 13, charges the voltage up capacitor 20, steps up a voltage at the input end side of the auxiliary choking coil L2 and supplies substantially the same voltage to a load b as the voltage before the drop in the output voltage V2 occurred.

REFERENCES:
patent: 3978393 (1976-08-01), Wisner et al.
patent: 4073004 (1978-02-01), Chambers et al.
patent: 4675798 (1987-06-01), Jost et al.
patent: 4754388 (1988-06-01), Pospisil
patent: 5047911 (1991-09-01), Sperzel et al.

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