Showing papers on "Magneto published in 1970"

Integrated magneto-resistive sensing of bubble domains

Abstract: An integrated magneto-resistive sensor for detection of magnetic bubble domains. The sensor is located on the chip in which the bubble domains propagate and can be an integral part of the propagation circuitry. Any material exhibiting a magneto-resistive effect can be used, and permalloy is a preferred material. The sensing element can be made very small, and has a length which is usually about equal to a bubble domain diameter.

Ignition arrangements for internal combustion engines

Abstract: The alternating current from the engine magneto charges the ignition capacitor on one half-wave and triggers the thyristor to discharge the capacitor on the next half-wave. The discharge current induces in the secondary of the spark coil a high voltage pulse that causes the spark plug to arc.

Solid state ignition system

Abstract: A solid state ignition system is constructed for use with the flywheel magneto of either single or multiple cylinder engines and the ignition system utilizes a capacitor discharge ignition circuit arrangement. High energy pulses are produced by a permanent magnet on a flywheel rotating past a charge-trigger coil assembly which induces magnetic flux therein to generate and store energy in the capacitor of the ignition circuit. The charge-trigger coil assembly is a single constructed unit having both a capacitor charging coil and a trigger coil formed on a single paramagnetic core. Ignition timing advance is accomplished simultaneously with and as a result of increased engine speed. This automatic timing advance is accomplished by utilizing the uniform change in rise time of the first peak of a trinary peaked pulse waveform that is generated by the trigger winding. This first peak trigger pulse is used to discharge the capacitor after it has been charged by a previous trinary peaked waveform. The peak following the charge peak is blanked so that the first peak of the next waveform is used as the trigger pulse.

Magneto-optic device having alternate layer film structure

Abstract: Kerr magneto-optic transducers having enhanced conversivity can be fabricated using a plurality of thin magnetic mirror layers spaced by dielectric layers having a thickness of approximately Mu /4 where lambda is the wavelength of the light employed for readout.

Magneto excited condenser discharge ignition system

Abstract: A dynamoelectric generating device for internal combustion engines combining a breakerless ignition system of a condenser discharge type with an alternator for generating electrical power wherein the energizing and timing coils for the ignition system are mounted on a stator with the power generating coils, both being excited by a rotating permanent magnet structure driven by the engine. An automatic spark advance is provided actuated at a predetermined engine speed.

Magneto-optically controlled ionization tube

Abstract: An ion valve has two coaxial electrodes between which is a closed volume filled with pressurized gas through which an electric arc passes. Remote ignition of arc is achieved by means of a laser beam sent into the interelectrode gap. The arc is shut off by means of a magnetic field of short duration, pointed parallel to the axis of the electrodes.