A C MOS level converter for converting low voltage control signals to equivalent control signals of a relatively high voltage which operates with extremely low power consumption. The level converter has first and second pairs of P-type MOS transistors coupled source to source and drain to drain, the commonly connected sources of each pair being coupled to ground potential and the gate of each outer transistor of each pair being coupled to low voltage control signals of opposite phase. The gate o...

An electronic temperature measuring and indicating device, in which a sensing head which is exposed to the temperature to be measured, is connected to a conventional electronic analog to digital read-out device. A battery supplies the power to the unit and is connected through a mercury switch to the analog digital converter. When the thermometer is held in its upright operating position, the mercury switch establishes contact between wires leading from the switch and the battery. When the devic...

The present invention relates to an electronic sequencer; and more particularly relates to a sequencing system comprised of identical modules that are interconnected in such a way that the modules are turned on in a given predetermined sequence to energize given loads connected to those modules. Adjustable delay intervals are introduced to permit selected loads to be turned on for predetermined durations. Various safety devices, such as panic buttons, hold switches, supervisory controls, etc., m...

A chronographic electronic timepiece adapted to display elapsed time wherein the time displayed is rounded off to the nearest half period is provided. Chronographic divider stages adapted to apply signals representative of elapsed time to associated display elements include a binary divider stage adapted to produce elapsed time signal having a period which is the longest time period not displayed by said display elements. A rounding off circuit is provided for advancing the period counted by the...

An electronic method and apparatus for measuring temperatures by means of a thermistor in one arm of an electrical bridge, bridge output being varied by the on and off duty cycle of a shunting impedance selectively switched into and out of the balancing arm of the bridge in accordance with the relative states of a counting display register and a cyclically scanned counting register, the display register state being altered by gated pulses, under the control of bridge output, to provide a digital...

An electronic balance includes circuit means for providing a plurality of electrical pulses representing the weight of an object positioned on the balance. Storage and comparator means are provided to selectively store tare weight representative signals and to control the application of the electrical pulses to a display circuit such that only the pulses corresponding to a weight exceeding the stored tare weight are applied to the display. The system, therefore, can automatically compensate for ...

The invention provides means for both driving the electronic mechanism of a watch from a high-voltage source, but also a liquid crystal time display. The source, which may be derived from an irradiated isotope, is connected to electrostatically drive a flat spring resonator. The pulsating current to an electrode of the resonator passes through a transformer (or capacitor) from which a pulsating d.c. is derived by rectification to supply operating current to a counter, a coder, and a crystal time...

A contactless electronic switch for providing signalling pulses utilizes a transistor oscillator as the main or primary component. The transistor oscillator includes a coil which may be damped by a tool steel core which is adjustable from outside the switch. Movement of the core switches the oscillator from a limiting state, with positive base current, to a limiting state with negative base current. A switching transistor is connected to the output of the transistor oscillator and, responsive to...

An electronic timepiece electronically driven and comprising an electronic circuit formed in a monolithic chip. This electronic circuit comprises passive elements whose resistance element is a MOS-R (metal-oxide-silicon resistor) and whose capacity element is a semiconductor element of MO'AOS (metal-oxide-Al.sub.2 O.sub.3 oxide-silicon) construction and comprises an active element composed of a bipolar type transistor, and is formed entirely in the monolithic chip.

An electronic timepiece comprising a plurality of time keep mechanisms adapted to be parallel operated, for example, an electrical time keep means and a mechanical time keep means, is disclosed. The electronic timepiece comprises a time set mechanism which can read out an information of mutual relation between a standard time and a kept time at an instant upon receipt of a standard time signal which is exteriorly supplied as an input and memorize said information and which can precisely synchron...