|
Match
|
Document |
Document Title |
|
|
7635965 |
Electric power king
A portable and integrated backup electric power supplies system, equipped with a battery. It comprises of an alternating current power supply, and a multifunction direct current power supply...
|
|
|
7633774 |
Power supply apparatus for suppressing attenuation of a transmission signal
A power supply apparatus has a coupled transformer that inputs and outputs a communication signal and a capacitor that has high impedance to a commercial power supply frequency and low impedance to...
|
|
|
7504816 |
Circuit for multiplexing digital and analog information via single pin of driver for switched MOSFETs of DC-DC converter
Multiple characteristics of a DC-DC converter, such as its mode of operation (e.g., either forced continuous conduction mode, or discontinuous conduction mode), and an operational parameter (such...
|
|
|
7493172 |
Methods and systems for stimulating a nerve originating in an upper cervical spine area to treat a medical condition
Methods of treating a medical condition of a patient include applying at least one stimulus to a target nerve within the patient with an implanted system control unit in accordance with one or more...
|
|
|
6604055 |
System and method for AC line voltage analysis
A system and method for AC line voltage analysis is disclosed. According to one embodiment of the present invention, a system for AC line voltage analysis on an AC line includes a transformer that...
|
|
|
6492898 |
Data transmission system for pipelines
In a data transmission system for a pipeline which is electrically conductive at least in sections, the pipeline itself forms a data line. For this purpose, a coupling element is present for the...
|
|
|
6377163 |
Power line communication circuit
A power line communication circuit comprises a rectifier connected to an a.c. power line utility source. The rectifier draws power from the a.c. power source and produces a low-frequency rectified...
|
|
|
6288630 |
Transmission of an operating order via an A.C. supply line
The present invention relates to a circuit for supplying a load from an approximately D.C. voltage obtained by rectifying an A.C. voltage, including means for extracting from the rectified A.C....
|
|
|
5886619 |
Communication method in movable body operating system
In an operating system for a movable body that runs on a guide rail, a communication method is described that establishes communications between the movable body and an operation control unit for...
|
|
|
5838073 |
Sideband communication on the standard parallel SCSI bus
A power supply line of a communications interface provides communication between two devices when one device is unable to utilize the communications interface in a standard manner. The power supply...
|
|
|
5657324 |
Bidirectional communication system
A bidirectional communication system for communicating signals between a master device (1) and a slave device (2) connected by a single wire (3), in which the master device (1) includes a voltage...
|
|
|
5448231 |
Method and apparatus for transmitting signals on a transmission line
The present invention provides a method and apparatus for transmitting signals on a transmission line, the transmission line having a DC current flowing therethrough and having a plurality of...
|
|
|
5153448 |
Information separation device
An information separation device that having a transformer operating as a separating filter to separate alternating voltage information and transmitted direct current power. The transformer has at...
|
|
|
4837452 |
Off-line dc power supply
A method and apparatus are disclosed for controlling an off-line dc power supply circuit including a printed circuit board. The power supply circuit comprises a source of unregulated dc input power...
|
|
|
4808200 |
Electrostatic precipitator power supply
An electrostatic precipitator is supplied with a d-c voltage of variable level upon which is superimposed a series of voltage pulses. For each voltage pulse, the difference between a positive...
|
|
|
4731720 |
High-voltage power source apparatus
A high-voltage power source apparatus has a step-up transformer for producing a high-voltage output, a rectifier/smoothing circuit for rectifying and smoothing the high-voltage output from the...
|
|
|
4703190 |
Power supply system for a quadrupole mass spectrometer
A power supply system for a quadrupole mass spectrometer includes an RF (radio frequency) power source for generating RF voltages and a voltage divider functioning as a DC (direct current) voltage...
|
|
|
4670829 |
Method and apparatus for supplying an electrostatic precipitator with high voltage pulses
An electrostatic precipitator is fed high voltage pulses by a pulse generating circuit including a high voltage transformer and a first thyristor switch connected in series with a primary winding...
|
|
|
4642637 |
Method for transmitting data via a line of an alternating current distribution network, and a transmitter for carrying out the method
The transmitter generates a current signal typical of the data to be transmitted, as a load current of a specific load resistance. To transmit this current signal, the load resistance is connected...
|
|
|
4628213 |
Electronic circuits for driving bells or electromagnetic devices
A multimode electronic circuit for driving bells or other electromagnetic devices. An important feature of this design is that it allows one circuit to function in a variety of modes: either in the...
|
|
|
4620108 |
Means providing independently controlled superimposed AC and DC voltages
A circuit for combining independently controlled AC and DC voltages in which AC and DC voltages are respectively applied to different inputs of a first amplifier, its output is connected to a first...
|
|
|
4609863 |
Power supply providing stabilized DC from an input voltage of AC superposed on DC without disturbing the input voltage
This power supply device comprises a voltage regulating element, a constant-current source, first and second constant-current circuits, and a current switching circuit interposed between the first...
|
|
|
4577979 |
Electrical temperature pyrolyzed polymer material detector and associated circuitry
Temperature detectors are disclosed which employ, as their active elements, pieces of partially pyrolyzed polymer material which switch to a more highly conductive state under appropriate imposed...
|
|
|
4567541 |
Electric power source for use in electrostatic precipitator
An electric power source for use in an electrostatic precipitator includes a first high voltage DC source having an output terminal adapted to be connected to discharge electrodes of the...
|
|
|
4540889 |
Method and apparatus for improving the dielectric strength of direct current cable insulation
Method for improving the dielectric strength of insulation not subject to fluid pressure and used to insulate a conductor element, such as the conductor of a cable, an insulator, etc., subjected to...
|
|
|
4520488 |
Communication system and method
A communication system for communicating analog and digital data with a process variable, e.g., pressure, transmitter over the two wires which supply power to the transmitter apparatus. The digital...
|
|
|
4476351 |
Subscriber loop current regulator
A current regulator for supplying dc power to a telephone line employs a resistor feed circuit in conjunction with a solid state feed circuit. The dc line current flowing through both such elements...
|
|
|
4413225 |
Method of operating an electrostatic precipitator
A method for operating an electrostatic precipitator with a DC voltage and superimposed pulses or superimposed AC voltage in which individual parameters such as amplitudes, pulse repetition...
|
|
|
4362971 |
Power supply for arc discharge devices
This application discloses circuits for use with arc discharge devices wherein a D.C. or A.C. high frequency, high voltage source is provided in conjunction with either a low frequency or D.C....
|
|
|
4303875 |
Device for the remote control of the angular position of an aerial rotor
A device for the remote control of the angular position of an aerial rotor comprising a d.c. motor for the rotation of the rotor and a drive circuit adapted to cause the rotation of the motor in...
|
|
|
4233039 |
Power supply for an electric precipitator
An improved power supply for an electric precipitator which includes a d-c voltage source and a pulsed a-c voltage source coupled to the high-voltage electrodes of the precipitator. The improvement...
|
|
|
4216543 |
Means for deriving baud timing from an available AC signal
Baud timing is derived from an AC signal having n half-cycles during each baud period, for use in demodulating a carrier signal bearing digital information via some predetermined variation in a...
|
|
|
4206367 |
Energy saving device
The current from an external AC power source is rectified to charge a DC battery and conduct current therethrough in series with a load during one-half of each power cycle of the external source....
|
|
|
4170739 |
Apparatus and method for supplying direct current with superimposed alternating current
A power supply and a method for providing in a convenient and inexpensive way an unlimited range of direct currents with superimposed alternating sinusoidal or non-sinusoidal currents to a single...
|
|
|
4156150 |
Circuit for regulating a DC voltage on which a large AC voltage is superimposed
Disclosed is a ringing power supply for developing a ringing signal having an AC voltage combined with a regulated DC voltage, of magnitude smaller than the magnitude of the AC voltage, from a...
|
|
|
4062294 |
Model railway power supply
A model railway or road vehicle installation in which vehicle-mounted electric drive motors are supplied through contact with track conductors, including a power supply providing an intrinsically...
|
|
|
4024410 |
Alternating current energy converter
An alternating current energy converter comprising a direct energy converter, the internal resistance of which is so connected into an alternating current circuit that current flows as rectified...
|
|
|
4017845 |
Circuitry for simultaneous transmission of signals and power
A transmission line having a pair of wires enclosed in a shield is used to simultaneously transmit high frequency signals and low frequency power between distant locations. At the sending end of...
|
|
|
4009957 |
Copy paper feed system
As a scanning element of an electrophotographic copying machine begins to move, a feed roller moves a sheet of copy paper into the bite of register rollers which are held stationary. This movement...
|
|
|
3993989 |
ELF communications system using HVDC transmission line as antenna
An extremely low frequency (ELF) Communication System is disclosed for worldwide communication from land to receiving stations thousands of miles away using the existing DC power transmission lines...
|
|
|
3789230 |
WELDING CURRENT GENERATOR HAVING TWO INTERCONNECTED SOURCES
Device adapted to provide welding current to automatic arc welding apparatus having a non-fusible electrode. The device comprises a first single-phase current source and a second three-phase...
|
|
|
3708741 |
D.C. TO D.C. CONVERTER FOR CONNECTION ACROSS TELEPHONE LINES
D.C. supervisory signals control tones and audio signals appearing across a pair of balanced floating telephone lines are converted to permit processing by a single-ended grounded system. The...
|
|
|
3702939 |
FAIL-SAFE COMPARATOR
This disclosure relates to a fail-safe comparator circuit having an input transformer, the primary of which is fed by an a.c. signal voltage. The secondary winding of the first transformer is...
|
|
|
3696383 |
INFORMATION TRANSMISSION SYSTEM FOR METERED MAGNITUDES
ON and OFF information signals are transmitted through an AC voltage distribution line via a single frequency carrier signal during a period of time in each cycle of the AC voltage when the...
|
|
|
3668413 |
CONTROL SYSTEM FOR HIGH VOLTAGE D.C. LINK CONNECTED BETWEEN A.C. SYSTEMS
The invention in this application relates to a control system for controlling the power or current in an H.V.D.C. link connected between two a.c. systems and is employed particularly to damp power...
|
|
|
3638044 |
HIGH-VOLTAGE SHORT-DURATION PULSE GENERATOR
An electronic circuit for producing high-voltage short-duration pulses including means for superimposing an input pulse on the voltage level of a first power supply and switching means for...
|
|
|
3515890 |
POWER SUPPLY UNIT
|
|
|
3462684 |
APPARATUS FOR DETECTING THE POSITION OF AN ELECTROCHEMICAL COULOMETER GAP
|
|
|
3421115 |
MICROWAVE COUPLING STRUCTURE AND TRANSMISSION LINE
|
|
|
3384810 |
Transformer circuit with direct current flux cancellation
|