Device for maintaining the oscillation of a balance for a timepi

Details Device for maintaining the oscillation of a balance for a timepi Device for maintaining the oscillation of a balance for a timepi

1975-03-17

1977-03-15

Weldon, Ulysses

Oscillators

Relaxation oscillators

5823A, 331116M, G04C 304

Patent

active

040117146

ABSTRACT:
The device comprises a balance having two magnets attached thereto, a coil combining pick-up and driving functions, two complementary transistors, an RC circuit formed of a speed-up first condenser and a first resistor, a biasing second resistor, a coupling second condenser a third resistor and a third condenser. This device is capable of operating over a wide temperature range, is less influenced by the deviation generally seen in the commercially available transistors, is simplified in construction, is inexpensive to manufacture and is adapted for mass production.

REFERENCES:
patent: 3238431 (1966-03-01), Raval
patent: 3365635 (1968-01-01), Shelley
patent: 3646750 (1972-03-01), Reich
patent: 3718870 (1973-02-01), Keller
patent: 3759028 (1973-09-01), Tsuruishi

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