Driver circuit for electro-mechanical transducer

Details Driver circuit for electro-mechanical transducer Driver circuit for electro-mechanical transducer

1977-08-03

1979-06-19

Witkowski, Stanley J.

Electricity: motive power systems

Motor-reversing

Armature or primary circuit control

58 23A, 58 23D, 58152H, 318139, 340636, 340663, G04C 300

Patent

active

041582870

ABSTRACT:
An electro-mechanical transducer driver circuit for an electronic timepiece characterized in that the pulse width of a driving pulse which drives an electro-mechanical transducer is controlled in a step-wise manner by the induced voltage of a driving coil.

REFERENCES:
patent: 3943380 (1976-03-01), Morgan et al.
patent: 3949545 (1976-04-01), Chihara
patent: 4014164 (1977-03-01), Fujita

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