Power supply circuit

Details Power supply circuit Power supply circuit

1986-08-13

1987-08-11

Wong, Peter S.

Electric power conversion systems

Current conversion

Including d.c.-a.c.-d.c. converter

363 98, 323266, H02M 3335

Patent

active

046866159

ABSTRACT:
A direct-current power supply circuit includes a series-connected switch (TR1) and an inducator (L) connected together with a flywheel diode (D) across an input voltage supply (V.sub.s). A transformer (TX) has a primary winding connected to the inductor (L) and the diode (D) by way of a bridge-connected network of switching devices (TR2-TR5). A reservoir capacitor (c) is connected to a secondary winding of the transformer (TX) by way of a full-wave rectifier (DB), and a load (LD) may be connected to the reservoir capacitor (c). Control means (CM) are provided to control the operation of the series-connected switch (TR1) and the network of switching devices (TR2-TR5) so that each cycle of operation transfers an equal amount of charge to the reservoir capacitor (c) regardless of variations in the input voltage (V.sub.s) or load conditions.

REFERENCES:
patent: 3737755 (1973-06-01), Calkin et al.
patent: 3742330 (1973-06-01), Hodges et al.
patent: 4099225 (1978-07-01), Nygaard
patent: 4533986 (1985-08-01), Jones
Vickerton, "Multiple-Output Switch-Mode Power Supply Design", New Electron. (GB) vol. 12, No. 12, Jun. 12, 1979, pp. 17-18.

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