Controller for electrically adjustable furniture
A controller for electrically adjustable furniture includes a main-voltage area and a low-voltage area that are electrically isolated from one another. A...
Synchronous sampling of PWM waveforms
A device for filtering a carrier frequency of a PWM waveform. The device includes a low-pass filter for converting the PWM waveform into an analog signal. The...
Electronic starter device for an electric motor, in particular for a
compressor of a refrigerating circuit of...
An electronic starter device for an electric motor including a first terminal connected in use to a mains voltage source selectively activatable by means of...
Image forming apparatus and method
An image forming apparatus including a stepper motor, a component attached to the stepper motor, and a controller to control the stepper motor. The controller...
Stepping motor driver
In a drive of a stepping motor, an electromotive force is generated on the coil of a motor with a sinusoidal wave having the same period as an energization...
Displacement sensing method and motor control apparatus
A displacement sensing method of the present invention includes the steps of superimposing a predetermined signal on a torque command to supply a drive torque...
Semiconductor device for controlling rotation of motor
A semiconductor device included in a motor driving apparatus for driving a motor is disclosed. The semiconductor device configured to control rotation of the...
Motor controller with integrated serial interface having selectable
synchronization and communications
In one embodiment, a motor drive is provided that includes a control board and a plurality of option boards configured to communicate with the control board via...
Servo motor monitoring apparatus
Disclosed a servo motor monitoring apparatus including: a magnetic pole position calculating member to extract a magnetic pole position signal of the servo...
Redundant electromechanical actuator for control surfaces
A redundant electromechanical actuator is provided that includes first and second electric motors, a common output shaft, first and second drive cable drums,...
A method of controlling a current of a three-phase electric motor with a three-phase controller. The firing angles are adjusted so as to leave a range of firing...
Motor controller of air conditioner
The present invention relates to a motor controller for air conditioner including a converter having at least one switching element for converter, the converter...
Method of controlling washing machine and motor
A method of controlling a washing machine and a motor determines whether a BLDC motor is in a normal state in software without hardware and a user is notified...
Position detecting apparatus having electric motor and method for
A reference position detecting apparatus includes an electric motor and a motor control unit. The electric motor includes a plurality of first coils and a...
Time delay logic of motor control
Circuitry for controlling a motor, such as a brushless motor (BLM), is disclosed. The circuitry may comprise one or more inputs for receiving rotor position...
The brushless motor has a first and second drive member. The first drive member is equipped with M phase coil groups each having N electromagnetic coils where M...
Apparatus for estimating rotor position of brushless motors and system and
method for controlling start-up of...
An apparatus for estimating rotor position for brushless motors capable of accurately estimating rotor position even though power source voltage fluctuates is...
Unified 0-10V and DALI dimming interface circuit
Systems and methods are disclosed that facilitate switching a lamp ballast between DALI and analog control states as a function of control state information...
Knowledge-based driver apparatus for high lumen maintenance and
A knowledge-based driver is provided for powering a solid-state light source with a constant current, including a memory that stores lumens per amp and volts...
Bi-direction constant current device
An LED lamp includes a bi-direction constant current device coupled between a power supply and a LED load to provide stable positive and negative currents to...
Bi-directional light emitting diode drive circuit in pulsed power
The present invention uses capacitive, inductive, or resistive impedance to constitute the first impedance, and the capacitive and inductive impedances in...
Low power non-isolated driver
The present invention mainly discloses low power non-isolated driver that can be used for LED lighting and other non-isolated power supply appliance, in which...
Multi-lamp driving circuit
A multi-lamp driving circuit for driving a plurality of lamps includes at least one power stage circuit, at least one transformer circuit, a balancing circuit,...
Dimming interface for power line
An interface circuit for a lamp ballast includes first and second input power lines, L1 and L2, with first and second respective switches, and a neutral power...
Circuit for driving LED
A circuit for driving a light emitting diode (LED), the circuit includes a timer, first to third electronic switches, and a regulator. The timer provides a...
Discharge lamp operating system
A discharge lamp operating system has first and second discharge lamp operating circuits. The first discharge lamp operating circuit includes first and second...
Electrodeless discharge lamp device and lighting fixture using the same
An electrodeless discharge lamp device comprises an induction coil, a pair of cores 1a, 1b, and thermal conductor 2. The cores 1a, 1b are configured to generate...
Device for supplying power to LED diodes
A device for supplying diodes LED includes an electric bridge (ABHG) with input terminals (A, B) and output terminals (H, G), including diodes (DS.sub.1,...
Multi-color backlight control circuit and multi-color backlight control
The present invention discloses a multi-color backlight control circuit, comprising: a plurality of pins for electrically connecting with a plurality of LED...
Limited flicker light emitting diode string
A limited flicker decorative light-emitting diode (LED) string includes a power plug adapted to connect to an alternating current (AC) power source and supply...
An inverter circuit (20) includes a transformer (T2) including a primary winding and a secondary winding including a high voltage terminal, a first copper foil...
A display device, comprising: an insulating substrate; a light sensor which includes a semiconductor layer disposed in a first region and a sensor input...
Unbalanced ion source
A dual unbalanced indirectly heated cathode (IHC) ion chamber is disclosed. The cathodes have different surface areas, thereby affecting the amount of heat...
Fluorescent lamp driving device and liquid crystal display apparatus using
A fluorescent-lamp-driving device contains a driving control circuit that receives direct current power voltage and a lamp control signal for performing drive...
Lighting and/or signalling device for a vehicle, associated with
electronics with a high level of integration
The device according to the invention comprises a light source and electronic supply and control. The light source electronic supply and control comprises at...
The disclosed subject matter includes a fluorescent lamp and particularly a cold cathode fluorescent lamp that can be employed as a light source for a LCD...
Extra high pressure mercury lamp with each electrode held by a sealing
An extra high pressure mercury lamp that includes an arc tube, which includes a light emission section enclosing 0.2 mg/mm.sup.3 or more of mercury, sealing...
Plasma display panel with improved contrast characteristics
A plasma display panel is disclosed. The plasma display panel includes a front substrate on which a scan electrode and a sustain electrode are positioned, a...
Plasma display panel and its manufacturing method
A PDP and a manufacturing method for the PDP are provided, the PDP being capable of suppressing discharge delay due to improved discharge properties of a...
Plasma display panel with improved light transmittance
A plasma display panel (PDP) with excellent display quality, including a dielectric layer that does not contain lead, satisfies transmittance, insulation...
External light shield sheet and plasma display device using the same
A plasma display device is provided. The plasma display device includes a plasma display panel (PDP) and an external light shield sheet which absorbs external...
Metal halide fill for an electric high pressure discharge lamp and
A metal-halogenide filling for forming an ionisable filling comprises at least one inert gas, mercury and at least one halogen, the filling including at least...
Light emitting element module and method for sealing light emitting
Disclosed is a method for sealing a light-emitting device wherein formation of air bubbles in a light-emitting device module can be prevented by performing no...
Organic semiconductor element with shield layer
An organic semiconductor element part formed on a substrate is covered with a planarizing layer, a radiator plate is fixed with an adhesive layer on the...
Fused heterocyclic compound and organic light emitting device
To provide a material for an organic light emitting device showing a light emission hue with an extremely good purity and outputting light having high luminance...
Compound and organic light emitting device using the compound
A novel mono(benzo[k]fluoranthene) compound having a molecular structure containing at least one condensed ring aromatic group which is tricyclic or more at any...
Organic EL device and display
An organic EL device and display are provided. An organic EL device which has light emission components in three colors of red, green and blue in a good balance...
Light-emitting devices, and related components, systems and methods are disclosed.
Light emitter substrate and image displaying apparatus using the same
It aims to improve, in a light emitter substrate which has a resistor for connecting electrodes adjacent in a row direction, withstand discharge performance of...
Discharge vessel and high intensity discharge lamp having such discharge
A discharge vessel for high intensity discharge lamps is disclosed. The discharge vessel comprises an elongated arc chamber having a longitudinal axis of...