| 摘要 |
<p>The device has an electronic module (1) with a time base oscillator circuit mounted in a case of the module. The electronic module and an electric power voltage source (8) e.g. battery, are mechanically and electrically connected with each other. The electronic module includes an oscillator, a frequency divider and a control circuit for an electric motor. The oscillator is connected to a piezoelectric resonator e.g. quartz resonator, where the oscillator, the frequency divider and the motor control circuit are made in a single integrated circuit.</p> |
