Circuit arrangement for controlling the running of a quartz-controlled electric clock
US3939644A · kind A · utility
17Cited by
6References
4Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jun 25, 1974 |
| Grant date | Feb 24, 1976 |
| Priority date | — |
| Expiry date | Jun 25, 1994 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG04G5/02
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A circuit arrangement for an electric clock comprises an oscillator stage, frequency divider stages, pulse shaper stages and two output stages for controlling the drive, switch means being provided which is operable to disconnect at least part of the oscillator stage and the two output stages from a voltage source so as to stop the oscillator and prevent the output stages from driving a drive motor.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.