First-Hand:The First Quartz Wrist Watch: Difference between revisions
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== 2. Centre Eléctronique Horloger (CEH), Neuchâtel<br> 2.1 Foundation<br> 2.2 Goal and Strategy<br><br> 3. Change of Strategy: Montre-bracelet à Quartz <br> 3.1 Status<br> 3,2 Initiative<br> 3.3 Change of Strategy<br><br> 4. The First Quartz Wrist Watch: Beta 1<br> 4.1 World First<br> '''<u><br></u>''' 5. Components of Beta 1<br> 5.1 Beta 1<br> 5.2 Quartz Resonator<br> 5.3 Driver Circuit <br> 5.4 Frequency Adjustment<br> 5.5 Temperature Compensation<br> 5.6 Frequency Divider<br> 5.7 Stepping Motor <br><br> 6. Beta 2<br> 6.1 Autonomy<br> 6.2 Wrong Strategy<br><br> 7. Beta 21<br> 7.1 Industrial Version<br> 7.2 Phase-out Model<br><br> 8. Chronology of the First Quartz Wrist Watch<br><br> 9. Rectification<br><br> 10. Bibliography == | == 2. Centre Eléctronique Horloger (CEH), Neuchâtel<br> 2.1 Foundation<br> 2.2 Goal and Strategy<br><br> 3. Change of Strategy: Montre-bracelet à Quartz <br> 3.1 Status<br> 3,2 Initiative<br> 3.3 Change of Strategy<br><br> 4. The First Quartz Wrist Watch: Beta 1<br> 4.1 World First<br> '''<u><br></u>''' 5. Components of Beta 1<br> 5.1 Beta 1<br> 5.2 Quartz Resonator<br> 5.3 Driver Circuit <br> 5.4 Frequency Adjustment<br> 5.5 Temperature Compensation<br> 5.6 Frequency Divider<br> 5.7 Stepping Motor <br><br> 6. Beta 2<br> 6.1 Autonomy<br> 6.2 Wrong Strategy<br><br> 7. Beta 21<br> 7.1 Industrial Version<br> 7.2 Phase-out Model<br><br> 8. Chronology of the First Quartz Wrist Watch<br><br> 9. Rectification<br><br> 10. Bibliography == |
Revision as of 14:48, 14 March 2009
The First Quartz Wrist Watch
by Armin H. Frei, LSM
Former Research Staff Member Centre Electronique Horloger
Content:
1. Introduction