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| Patent # | Description |
|---|---|
| US-4,893,104 |
Electromagnetic actuator device, in particular for the selection of the
needles on a knitting machine An electromagnetic acutator device for selecting needles in a knitting machine comprises two windings (3,4) positioned on opposite sides relative to an armature... |
| US-4,893,103 |
Superconducting PYX structures A permanent magnet structure comprising one or more truncated hollow cyliical flux source (HCFS) segments with the end faces of each segment covered by... |
| US-4,893,102 |
Electromagnetic contactor with energy balanced closing system An electromagnetic contactor or motor controller is taught in which an energy efficient bounceless contact closing operation is utilized. An electromagnetic... |
| US-4,893,101 |
Resettable ground fault circuit interrupter A resettable circuit interrupter in a ground fault detector circuit utilizes a housing which slideably retains a solenoid coil wound on a bobbin. A contact... |
| US-4,893,100 |
External manual rotatable drive useable to tune a VCR Disclosed herein is a drive device designed to be detachably mounted on an existing video cassette recorder and playback machine and including a friction wheel... |
| US-4,893,099 |
Extended response dynamic noise reduction system A noise reduction system compresses an input signal at a constant ratio in response to a control signal derived from the compressed signal. Added to the derived... |
| US-4,893,098 |
90 Degree broadband MMIC hybrid A 90 degree hybrid is contemplated having three parallel signal paths, one of the signal paths is a central signal path which provides direct impedence to... |
| US-4,893,097 |
Method for temperature compensation of a voltage-controlled crystal
oscillator in a phase control circuit A heating or, respectively, cooling device is realized by a Peltier element and is assigned to a crystal oscillator and driven by a processor with the assistance... |
| US-4,893,096 |
Oscillator circuit comprising an oscillator with a CMOS An oscillator circuit comprising an oscillator with a CMOS gate. A suitably proportioned CMOS gate consumes power only when its gate output, assumed to be... |
| US-4,893,095 |
Frequency stabilized oscillator An oscillator, for example, a ring oscillator, comprises an oscillator stage which includes a current source in series with a parallel connection of a switching... |
| US-4,893,094 |
Frequency synthesizer with control of start-up battery saving operations A frequency synthesizer governed by a battery saving signal having sleep and awake cycles comprises a phase locked loop and a control circuit for enhancing the... |
| US-4,893,093 |
Switched power splitter An improved, switched, power splitter is described in which a high frequency input signal is applied via an input to a plurality of amplifiers. First... |
| US-4,893,092 |
Operational amplifier circuit The operational amplifier circuit comprises a differential amplifier input stage for producing an amplified signal on the basis of an input voltage signal... |
| US-4,893,091 |
Complementary current mirror for correcting input offset voltage of
diamond follower, especially as input stage... A complementary current mirror includes a PNP transistor and an NPN transistor, one of which serves as a control transistor and the other of which serves as an... |
| US-4,893,090 |
Amplifier arrangement A signal voltage applied between the input terminals is converted by means of a differential amplifier into two phase-opposed signal currents which are inverted... |
| US-4,893,089 |
Pulse power linac A linear acceleration for charged particles is constructed of a plurality of transmission line sections that extend between a power injection region and an... |
| US-4,893,088 |
Transimpedance focal plane processor A transimpedance processor includes a feedback circuit for generating a voltage as a function of the input background level and precharging the capacitor of the... |
| US-4,893,087 |
Low voltage and low power frequency synthesizer A low power and low voltage frequency synthesizer includes a memory containing information to provide divisor information to the variable divider of a phase... |
| US-4,893,086 |
Bar-to-bar armature tester A portable bar-to-bar armature tester for testing motor armatures for adequacy of their coil windings is disclosed. The tester is to be held by hand, such that... |
| US-4,893,085 |
Ignition monitoring circuit for an ignition system of an internal
combustion engine including an erroneous... An ignition monitoring circuit for an ignition system of an internal combustion engine of an automobile, which comprises, in addition to a pulse height and a... |
| US-4,893,084 |
Formation electromagnetic parameters measuring tool using transmitter
reference and reflected signals and a... A method and apparatus for dielectric investigation in formations adjacent a well borehole is set forth. In the preferred and illustrated embodiment, a microwave... |
| US-4,893,083 |
Magnetic resonance apparatus comprising integrated gradient r.f. coils In a magnetic resonance apparatus a gradient coil system and an r.f. coil are combined so as to form a magnetically, electrically and structurally integrated... |
| US-4,893,082 |
Noise suppression in magnetic resonance imaging A method and associated system are disclosed for suppressing the undesirable effect of noise found in signals, such as from a magnetic resonance miager's (MRI)... |
| US-4,893,081 |
Driven equilibrium in magnetic resonance imaging A Magnetic Resonance (MR) data acquisition system using driven equilibrium in a spin echo scan sequence wherein the dephased spins in the transverse plane are... |
| US-4,893,080 |
Volume-selective spectroscopy using refocused echoes The measurement of localized spectra by means of stimulated echoes is known per se. Using three 90.degree. pulses, stimulated echoes are then generated; these... |
| US-4,893,079 |
Method and apparatus for correcting eddy current signal voltage for
temperature effects An apparatus and method for measuring physical characteristics of an electrically conductive material by the use of eddy-current techniques and compensating... |
| US-4,893,078 |
Absolute position sensing using sets of windings of different pitches
providing respective indications of phase... For enabling a resolver to have absolute position sensing over a wide displacement range while still obtaining the resolution, accuracy and precision obtainable... |
| US-4,893,077 |
Absolute position sensor having multi-layer windings of different
pitches providing respective indications of... For enabling a resolver to have absolute position sensing over a wide displacement range while still obtaining the resolution, accuracy and precision obtainable... |
| US-4,893,076 |
Proximity detector using inductive effect on oscillating circuit the
charge of which is controlled by a pulse... A proximity detector is provided with an oscillating circuit generating cyclically an unsustained pseudo-oscillation. The detector includes a processing circuit... |
| US-4,893,075 |
Dual speed sensor pickup assembly with anti-cross talk coils A dual speed sensor pickup assembly (140) for sensing the rotational velocity of two independently rotatable, closely axially spaced exciter rotors (116 and 118)... |
| US-4,893,074 |
Electronic device testing system An electronic device testing system of the type in which a test head is mounted for pivotal movement about three orthogonal axes. A cable is introduced to the... |
| US-4,893,073 |
Electric circuit board current sensor An electric circuit board has a current trace thereon and a notch in the edge and an opening therethrough on opposite sides of the trace. A magnetic sensor is... |
| US-4,893,072 |
Apparatus for testing an integrated circuit device An IC tester for testing an IC device having clocked circuits operative to process a signal under control of a clock signal with a time delay shift comprises a... |
| US-4,893,071 |
Capacitive incremental position measurement and motion control A capacitance based, high resolution, incrementally encoding, position measuring system employs an array of identical replicated electrodes that are driven in... |
| US-4,893,070 |
Domino effect shunt voltage regulator A High Voltage Regulation apparatus which uses an amplifier having an arbitrarily large number of stacked MOSFETs to provide low impedance shunt regulation with... |
| US-4,893,069 |
Ferroresonant three-phase constant AC voltage transformer arrangement
with compensation for unbalanced loads A ferroresonant three-phase constant AC voltage transformer comprising three transformer iron cores with one for each corresponding input supply phase, primary... |
| US-4,893,068 |
Digital servo employing switch mode lead/lag integrator A digital servo system for causing a mechanical element (48) to track a desired path and hold various positions along the path and employing a lead/lag... |
| US-4,893,067 |
Direct current motor speed control The motor speed control circuit senses average back EMF as a measure of motor speed. The back EMF charges a capacitor circuit which accumulates charge and... |
| US-4,893,066 |
Hybrid sample rate servo motor controller A hybrid sample rate servo motor employing rate feedback compensation is disclosed. The system employs a shaft encoder having a predetermined resolution to... |
| US-4,893,065 |
Geometric error compensation circuit of color television camera devices For the purpose of compensating for geometric errors at four corners of a color picture there are provided a circuit for separating a vertical scanning saw tooth... |
| US-4,893,064 |
Operating system for skin treatment apparatus A fluorescent lamp operating system for a skin treatment apparatus comprises: (i) a plurality of pairs of fluorescent lamps for providing luminous radiation,... |
| US-4,893,063 |
Apparatus for improving the efficiency of a lighting element A voltage reduction unit for reducing the voltage supplied to a lighting element to a prescribed value and for maintaining the prescribed voltage across the... |
| US-4,893,062 |
Wall box dimming system and face plate and switch assembly therefor A wall box dimming system assembly controls the intensity level of a plurality of groups of lights in accordance with a plurality of preset scenes. The... |
| US-4,893,061 |
Switching arrangement A switching arrangement suitable for the ignition and operation of at least one high-pressure discharge lamp, which arrangement is provided with a branch... |
| US-4,893,060 |
Drive circuit for a thin-film electroluminescent display panel A drive circuit for a thin-film electroluminescent (EL) matrix display panel includes an odd side N-ch high voltage MOS driver, and an odd side P-ch high voltage... |
| US-4,893,059 |
Electronic ballast with safety feature An electronic ballast provides a high-frequency current-limited voltage between a pair of socket terminals. These socket terminals are adapted to receive and... |
| US-4,893,058 |
Array electron accelerator A coaxial cavity (CC) resonating in accordance with the fundamental mode and the electrons are injected into the median plane perpendicular to the axis.... |
| US-4,893,057 |
High intensity discharge lamp and electodes for such a lamp An HID lamp incorporates all-metal electrodes providing rapid transition of the arc to the electrode tip. The electrode comprises a length of thoriated tungsten... |
| US-4,893,056 |
Fluorescent display apparatus Fluorescent display apparatus for use in a large-screen display comprising a display portion having fluorescent display portions arranged in a matrix and coated... |
| US-4,893,055 |
Process for using unsaturated polyester resin composition for treating
cathode-ray tubes and cathode tubes... A resin composition obtained by adding maleic anhydride to an unsaturated polyester resin composition comprising (I) an unsaturated polyester, (II) a styrene... |
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