Crystal-controlled electronic timepiece with CMOS switching and

Details Crystal-controlled electronic timepiece with CMOS switching and Crystal-controlled electronic timepiece with CMOS switching and

1974-05-30

1976-02-24

Miller, Jr., George H.

58 23R, G04C 300

Patent

active

039396436

ABSTRACT:
An electronic timepiece with a crystal-controlled oscillator includes a multistage frequency divider and a CMOS switching circuit inserted between the oscillator and the first divider stage. The switching circuit comprises two complementary MOSFETs, with insulated gates connected in parallel to an output lead of the oscillator, and at least one further MOSFET in series with the other two, the latter having an insulated gate connected to another output lead of the oscillator for energization in staggered relationship with the former to bring about simultaneous conduction for one brief instant per half-cycle of the generally sinusoidal oscillator voltage. With an oscillator operating at a frequency on the order of megahertz, the divider stages may form part of an upstream and a downstream frequency divider connected in cascade; the upstream divider may consist of nonbinary stages with individual step-down ratios of 3:1 or higher to minimize overall power consumption.

REFERENCES:
patent: 3629709 (1971-12-01), Engdahl
patent: 3699763 (1974-10-01), Zeph
patent: 3737673 (1973-06-01), Suzuki
patent: 3754391 (1973-08-01), Fujita
patent: 3765163 (1973-10-01), Levine et al.

Affiliated with

Also associated with

Rating

Crystal-controlled electronic timepiece with CMOS switching and does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Crystal-controlled electronic timepiece with CMOS switching and , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Crystal-controlled electronic timepiece with CMOS switching and will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2073800