Power supply providing stabilized DC from an input voltage of AC

Details Power supply providing stabilized DC from an input voltage of AC Power supply providing stabilized DC from an input voltage of AC

1984-10-18

1986-09-02

Beha, Jr., William H.

Electricity: power supply or regulation systems

In shunt with source or load

Using a three or more terminal semiconductive device

323231, 323299, 323316, 307 2, 307358, G05F 500

Patent

active

046098631

ABSTRACT:
This power supply device comprises a voltage regulating element, a constant-current source, first and second constant-current circuits, and a current switching circuit interposed between the first and second constant-current circuits and the constant-current source, and by comparing an input voltage with an output voltage to introduce constant current from the first constant-current circuit to the voltage regulating element when the input voltage is higher than the output voltage, while introducing the constant current from the second constant-current circuit to ground terminal when the input voltage is lower than the output voltage. Thus, a stabilized DC voltage may be produced from a DC voltage including a superposed AC signal without interfering with the AC communications signal.

REFERENCES:
patent: 3805093 (1974-04-01), Hodemaekers
patent: 4187537 (1980-02-01), Avicola et al.
patent: 4429234 (1984-01-01), Streit
patent: 4516081 (1985-05-01), Katakura

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