Electronic timepiece having plural capacitors for selectively ad

Details Electronic timepiece having plural capacitors for selectively ad Electronic timepiece having plural capacitors for selectively ad

1975-08-14

1977-04-05

Grimm, Siegfried H.

Oscillators

Solid state active element oscillator

Transistors

58 23A, 58 33, 58 855, 331179, H03B 304, H03B 536

Patent

active

040165086

ABSTRACT:
An electronic timepiece has a quartz-crystal oscillator which generates a high frequency output signal and applies it to a divider which divides the signal into a lower frequency output signal suitable as a time base. A manually actuated switch selectively effects electrical connection of one or more capacitors to the quartz-crystal oscillator to accordingly adjust the oscillator output frequency. The number of actuations of the switch determines, through a counter and gate circuitry, which capacitors are connected to the oscillator, and light-emitting diodes visually indicate which capacitors are connected to the oscillator.

REFERENCES:
patent: 3690546 (1972-09-01), Uehara
patent: 3838566 (1974-10-01), O'Connor et al.

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