Voltage regulated electronic timepiece

Details Voltage regulated electronic timepiece Voltage regulated electronic timepiece

1978-06-23

1980-08-12

Pellinen, A. D.

Electricity: power supply or regulation systems

Remote sensing

368218, G05F 308

Patent

active

042175402

ABSTRACT:
A voltage regulating circuit for supplying a regulated voltage to an electronic circuit of an electronic timepiece. The voltage regulating circuit is comprised of an N-MOS and a P-MOS transistor pair connected in series with drains and gates connected together at a common junction, and a constant current source for providing a constant current through the transistor pair for developing the regulated voltage thereacross. The constant current source is comprised of a third MOS transistor connected in series with the transistor pair, and a biasing circuit for biasing the third MOS transistor to provide a constant current through the transistor pair. The voltage regulating circuit and the electronic circuit of the electronic timepiece are both integrated circuits formed on a common integrated circuit chip.

REFERENCES:
patent: 3813595 (1974-05-01), Sheng
patent: 3832644 (1974-08-01), Nagata et al.
patent: 3975649 (1976-08-01), Kawagoe et al.
patent: 4135125 (1979-01-01), Oura

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