ELECTRONIC CIRCUIT FOR QUARTZ CRYSTAL WATCH

摘要

A watch movement constructed as an electronic circuit provided with an oscillating circuit having a quartz oscillator or resonator and a capacitor roughly adjusting the frequency of the oscillator with a variable capacitor for finally adjusting the frequency of a time base output thereof. The oscillating circuit is temperature compensated. The oscillator output is received by a fourteen-stage frequency-dividing circuit having complementary MOSFETS arranged as binary circuits with a wave-shaping circuit reducing the frequency of the oscillations to about one Hz. The frequency-divided signal is applied to driving circuitry that develops in conjunction with pulse-generating circuitry opposite-going pulses applied to a transducer that converts the pulses to rotary motion using a driving gear wheel of a second hand of a watch and of a gear train thereof.