Up-down voltage regulator

Details Up-down voltage regulator Up-down voltage regulator

G - Physics

05

F

323/4

G05F 1/44 (2006.01) G05F 1/563 (2006.01) H02M 3/158 (2006.01)

Patent

CA 1192952

UP-DOWN VOLTAGE REGULATOR Abstract of the Disclosure: An up-down voltage regulator includes an up regulator followed by a series pass PNP transistor. The base of the PNP transistor is coupled to an un- regulated voltage source. The up regulator is respon- sive to the voltage at the collector of the PNP transistor to control the emitter voltage of the PNP transistor for all values of the unregulated voltage source to bias the PNP transistor so as to establish and maintain the collector voltage of the PNP tran- sistor at a desired regulated value.

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