Charging control circuit for electronic timepiece

Details Charging control circuit for electronic timepiece Charging control circuit for electronic timepiece

1980-06-27

1982-02-16

Weldon, Ulysses

Horology: time measuring systems or devices

Chronological

With power monitor

368203, 368204, 320 39, G04B 900

Patent

active

043162754

ABSTRACT:
A charging control circuit for an electronic timepiece has a power source circuit including a charging device and a secondary battery, an electronic timepiece circuit, a drive signal change-over circuit for changing an alarm signal and warning signal for excessive charge, and a buzzer driving circuit for driving a buzzer.
The buzzer sound for indicating excessive charge to the secondary battery is different from that of time alarm.

REFERENCES:
patent: 3753072 (1973-08-01), Jurgens
patent: 3979656 (1976-09-01), Tukeda et al.

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