Charging control circuit for electronic timepiece
US4316275A · kind A · utility
3Cited by
2References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 27, 1980 |
| Grant date | Feb 16, 1982 |
| Priority date | — |
| Expiry date | Jun 27, 2000 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S320/18
- WIPO fieldMeasurement
- WIPO sectorInstruments
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.