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| Patent # | Description |
|---|---|
| US-4,841,215 |
D.C. solenoid control circuit A D.C. solenoid control circuit for use in mechanisms driven by an A.C. motor. A rectifier converts A.C. current to D.C. current and provides an A.C. current... |
| US-4,841,214 |
Control device for a stepping motor A control device is provided for a stepping motor which connects with a drive system comprising a somewhat resilient member exerting a rebound force, such as a... |
| US-4,841,213 |
Current and torque feedback system and circuitry for sine-wave
controlled brushless servo drive systems A current and torque feedback system for use with sine-wave controlled brushless servo motors each having a plurality of stator windings, a permanent magnet... |
| US-4,841,212 |
Electromagnetic bearing control apparatus In an electromagnetic bearing control apparatus for suppressing vibratory rotational motion of a rotor, a selective extraction unit is provided in servo-circuits... |
| US-4,841,211 |
Metering method of injection molding machine A metering method for an injection molding machine, which drives a screw with a servo motor in the axial direction to perform injection including the step of... |
| US-4,841,210 |
Industrial robot control device An industrial robot control device for use in an automobile manufacturing line for instance. The control device is capable of preventing incorrect or improper... |
| US-4,841,209 |
Actuator control system with displacement sensor fault detection A novel actuator control system is characterized by displacement sensor fault detection. The system includes linear variable phase transducer (LVPT) displacement... |
| US-4,841,208 |
Position control system including a quick response control A position control system comprises a position command generator for generating a position command at a prescribed sampling time k for a time k+M which is at... |
| US-4,841,207 |
Pulse width modulated control method and means The method uses at least one power switch having "on" and "off" states for providing, respectively, low and high impedance paths between an inductive load and a... |
| US-4,841,206 |
Speed control device for an electronic sewing machine Variable potential and breaking detection potential of a controller in a sewing machine are respectively subjected to analog-to-digital conversions, thereby to... |
| US-4,841,205 |
Control device for a movable part, designed for opening and closing an
opening, especially a sliding/tilting... A control device for a movable part, especially a sliding/tilting roof of a vehicle, comprises a motor for driving the movable part, wherein the terminals of the... |
| US-4,841,204 |
Combination electric motor and magnetic bearing A brushless DC motor is disclosed wherein armature forces can be produced and controlled as both radial forces and as torque couples. A structure is described in... |
| US-4,841,203 |
Electric trolling motor steering system A permanent magnet direct-current gearhead motor is supported by a base member so that its output gear motion is transmitted to a splined steering shaft which... |
| US-4,841,202 |
Speed-limited electrically compensated constant speed drive An electrically compensated constant speed drive which is speed limited so that power flow through the speed compensation link is unidirectional includes a... |
| US-4,841,201 |
Display device including flyback transformer constructed to control
leakage currents A stacked or laminated-layer type of flyback transformer includes a plurality of high voltage windings wound in regular order in a direction of the winding axis... |
| US-4,841,200 |
Circuit for driving a multiple-element display A circuit for driving a display device having n display elements, where n is a positive integer greater than one, comprises a device for poviding a repetitive... |
| US-4,841,199 |
Electrical system for vehicle daytime running lights The invention consists of an electrical circuit for a vehicle headlight system whereby the conventional parallel circuit connection of headlights is... |
| US-4,841,198 |
Head lamp control method and apparatus, with PWM output regulation A pulse width modulation control unit for energizing a vehicle head lamp. During daylight operation of a motor vehicle the control unit energizes the head lamp... |
| US-4,841,197 |
Double-chamber ion source Ion source including an electric discharge chamber body divided by a partition, having an anode electrode therein, into a main discharge chamber and a subsidiary... |
| US-4,841,196 |
Two-filament lamp and operating circuit and method for designing same A two-filament incandescent lamp and operating circuit well suited to lighting applications requiring high service reliability. In the lamp, the rated operating... |
| US-4,841,195 |
Discharge lamp having a yttrium aluminum garnet discharge envelope The invention relates to a high-pressure discharage lamp comprising a discharge envelope having a wall of ceramic translucent material consisting mainly of... |
| US-4,841,194 |
Fluorescent display device A fluorescent display device which is capable of effectively utilizing characteristics of reinforced glass to be constructed in a light-weight and thin manner... |
| US-4,841,193 |
Fluorescent lamp device with incandescent bulb type base cap A fluorescent lamp device with an incandescent bulb type base cap. The fluorescent lamp device has a luminous tube unit and a case with one end supporting the... |
| US-4,841,192 |
Piezoelectric hydrophone A piezoelectric hydrophone is designed with overload protectors (1a, 11a, 11b) which protects the hydrophone against internal and external overpressures. The... |
| US-4,841,191 |
Piezoelectric actuator control apparatus Disclosed herein are a piezoelectric actuator control apparatus comprising a capacitor connected in series with a piezoelectric actuator that has electrodes, and... |
| US-4,841,190 |
Resin-filled permanent-magnet stepping motor A permanent-magnet stepping motor includes a stator which has resinous protrusions at its one end. An end plate disposed on one side of the stator is molded... |
| US-4,841,189 |
Stepper motor and method of making the same A multi-phase stepper motor having an annular permanent magnetic rotor and a plurality of matingly engageable stator phase assemblies around the rotor. Each of... |
| US-4,841,188 |
Speed changing device for electric fans A speed-changing device for electric ceiling fans includes a run coil for electrical connection to a motor of a ceiling fan, and a starting and speed changing... |
| US-4,841,187 |
Electric motor with attached tachogenerator An electric motor with attached tachogenerator wherein the tachogenerator may be attached to electric motors of varying types without significantly changing the... |
| US-4,841,186 |
Electronically commutated, collectorless directed-current motor An electronically commutated, collectorless direct-current motor is disclosed whose stator has a drum winding and an external magnetic yoke surrounding same, and... |
| US-4,841,185 |
Rising frequency generator An alternating current generator has a rotor and a rotatable stator. The moment of inertia of the stator is at least eight times that of the rotor. The... |
| US-4,841,184 |
Velocity and imbalance observer control circuit for active magnetic
bearing or damper "Velocity Observer" and "Imbalance Observer" circuits are used to control the journals in the magnetic field of an attractive type active magnetic bearing and/or... |
| US-4,841,183 |
Dynamoelectric machine construction and method A dynamoelectric machine or electric motor construction is disclosed in which the motor has a cylindrical shell having a stator core press-fitted therein and... |
| US-4,841,182 |
Rectifier in alternating generators for automotive vehicles A rectifier in an alternating current generator for automotive vehicles is disclosed, which comprises a pair of conductive radiators for positive and negative... |
| US-4,841,181 |
Electromagnetic launcher with post-firing energy recovery for slow or
rapid fire operation An electromagnetic launcher system which includes a homopolar generator pulse power supply recovers post-launch rail inductive energy and transfers it to the... |
| US-4,841,180 |
Integrable evaluating circuit An integrable evaluating circuit includes a trigger circuit, a first and a second circuit node, both of which serve both as inputs and as mutually-complementary... |
| US-4,841,179 |
Phase equalizing active filter A first operational amplifier (OP AMP) is connected at the positive input terminal to a signal input terminal. The positive output terminal of the first OP AMP... |
| US-4,841,178 |
Asynchronous processor arbitration circuit The invention provides a circuit for arbitrating access to a common resource by a pair of processors using an asynchronous sequential logic circuit. A latch... |
| US-4,841,177 |
Comparator circuit operable for a wide range of input signal An improved comparator circuit which can operate stably against noise or fluctuation in a power supply is disclosed. The comparator circuit includes a... |
| US-4,841,176 |
Output disable control circuit for ECL programmable array logic device The present invention provides circuitry for disabling the output gate of an ECL programmable array logic device so that TTL programming and test signals may be... |
| US-4,841,175 |
ECL-compatible input/output circuits in CMOS technology ECL-compatible input/output circuits in CMOS technology which meet very strict ECL level demands and are as independent as possible of temperature and field... |
| US-4,841,174 |
CMOS circuit with racefree single clock dynamic logic Disclosed is an improved logic circuit employing dynamic CMOS logic and having alternating logic employing first and second conductivity type transistors,... |
| US-4,841,173 |
Bipolar logic circuit In a bipolar logic circuit, an ouptut Darlington transistor and a first transistor are connected in series between a high potential source and a low potential... |
| US-4,841,172 |
Bipolar-MOS logic circuit with high speed operation A logic circuit comprises a current control means including first and second MOS transistors for controlling the current to the output circuit and also for... |
| US-4,841,171 |
High speed comparator circuit with single supply voltage An improved high speed comparator having the compatible open collector output in TTL to use the single supply voltage and reduce the non-symmetrical distortion... |
| US-4,841,170 |
Temperature controlled hybrid assembly A hybrid circuit structure includes an electrical circuit and a heating circuit therefor, both mounted on a single substrate. Valuable substrate space is saved... |
| US-4,841,169 |
Dual-gate fet amplifier-mixer with intermediate ohmic island for
rejecting a frequency band A dual gate field effect transistor having an intermediate ohmic island between the two transistor halves is connected to operate as an amplifier-mixer for... |
| US-4,841,168 |
Master slave latch circuit with race prevention A master slave latch circuit is formed by a master latch circuit for outputting a master output signal and a slave latch circuit for outputting a slave output... |
| US-4,841,167 |
Clock recovering device A device for recovering a clock from received data which has a different duty ratio is disclosed. The optimum timing of a recovered clock is determined based on... |
| US-4,841,166 |
Limiting shoot-through current in a power MOSFET half-bridge during
intrinsic diode recovery A novel closed loop feedback circuit is provided which senses the shoot-through current of a power switching device driving an inductive load. If excessive... |
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