Stabilising of an electronic circuit for regulating a mechanical

Details Stabilising of an electronic circuit for regulating a mechanical Stabilising of an electronic circuit for regulating a mechanical

1997-04-25

1998-04-14

Miska, Vit W.

Horology: time measuring systems or devices

Mechanical time base

Mainspring

368204, G04B 2502, G04B 100

Patent

active

057401314

ABSTRACT:
The timepiece comprises an electrical energy generator (3) comprising a rotor (3a) and means (3b) for supplying said electrical energy in response to rotation of said rotor (3a), a source of mechanical energy (2), measuring means (Trig) coupled to said generator (3) for producing measurement pulses of the angular frequency of an alternating voltage supplied by the generator (3), braking means (K) responsive to a braking command signal for applying a braking torque to said rotor (3a), an electronic circuit (1) comprising reference means (Osc) for producing a reference signal (FR), and slaving control means (Div, Cmp, Tmr) arranged to control said braking means (K) when said measurement pulses are ahead with respect to the reference signal.

REFERENCES:
patent: 3937001 (1976-02-01), Berney
patent: 4008866 (1977-02-01), McClintock
patent: 4037400 (1977-07-01), Kitai et al.
patent: 4312058 (1982-01-01), Shida et al.
patent: 4799003 (1989-01-01), Tu et al.
patent: 4910720 (1990-03-01), Ray et al.
patent: 5517469 (1996-05-01), Wifet

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