Multiple voltage switching power supply having output voltage li

Details Multiple voltage switching power supply having output voltage li Multiple voltage switching power supply having output voltage li

1983-01-12

1985-08-06

Beha, Jr., William H.

Electrical transmission or interconnection systems

Plural load circuit systems

363 17, 363 49, 363 56, 363 71, H02P 1322

Patent

active

045338361

ABSTRACT:
A multi-voltage switching power supply having a first pair of switches connected in series with each other across a pair of incoming power lines. The switches are alternately closed at a fifty percent duty cycle. A plurality of pairs of series-connected switches are also connected between the incoming power lines and operated in a pulse-width modulated mode. Power supply circuits are connected between the junction of the pulse-width modulated switches of each pair and the junction of the fifty percent duty cycle switches. The peak value of the current applied to the power supply circuit, which determines the power supply output voltage, is controlled by adjusting the closure time of the pulse-width modulated switches.

REFERENCES:
patent: 3378751 (1968-04-01), Walker
patent: 3614590 (1971-10-01), Kernick
patent: 3942093 (1976-03-01), Lowther
patent: 4150425 (1979-04-01), Frosh et al.

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