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Publication of CH1177369A4publicationCriticalpatent/CH1177369A4/xx
G04C3/00—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means
G04C3/04—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance
G04C3/06—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance using electromagnetic coupling between electric power source and balance
G04C3/065—Electromechanical clocks or watches independent of other time-pieces and in which the movement is maintained by electric means wherein movement is regulated by a balance using electromagnetic coupling between electric power source and balance the balance controlling gear-train by means of static switches, e.g. transistor circuits
G04C3/067—Driving circuits with distinct detecting and driving coils
G—PHYSICS
G04—HOROLOGY
G04C—ELECTROMECHANICAL CLOCKS OR WATCHES
G04C11/00—Synchronisation of independently-driven clocks
G04C11/08—Synchronisation of independently-driven clocks using an electro-magnet or-motor for oscillation correction
G04C11/081—Synchronisation of independently-driven clocks using an electro-magnet or-motor for oscillation correction using an electro-magnet