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Motor control circuit
In some preferred embodiments, a motor control circuit 1 for controlling driving of a plurality of motors 3 and 4 includes a serial communication circuit...
Control apparatus for AC motor
According to a control apparatus for an AC motor, a switching section selects a two-phase control current value as a current fixing value, when a first current...
Generating heat in a movable barrier operator
A movable barrier operator apparatus having a motor and a control system is disclosed. The motor is configured to couple to a movable barrier. The control...
An electronic device for controlling and/or regulating a drive unit includes a memory configured to make available at least two at least partially different...
Thrust ripple mapping system in a precision stage and method thereof
The present invention proposes a thrust ripple mapping system in a precision stage with the thrust ripple mapping system comprising a moving stage, a load cell,...
Brushless motor, external AC voltage source, and electric power steering
The present invention provides a brushless motor in which the voltage utilization ratio can be increased and the torque and output of the motor can thereby be...
Method and control system for suppression of vibration
A method for suppression of vibration includes: adjusting a center frequency of a band-pass filter, and subjecting a to-be-detected signal to processing by the...
Electric power saving device for motor of pump jacks apparatus
An electric power saving device for motor of pump jack apparatus. The electric power saving device preferably detects current and voltage generated from a motor...
Electric motor control device and electric motor control method
An electric motor control device that performs a voltage phase control includes a voltage generator configured to calculate a d-q axis voltage command value, a...
Magnetic pole position detector for synchronous motor
A magnetic pole position detector includes, a voltage command unit that generates high-frequency voltage command in a dq coordinate system, a three-phase...
Circuit and method for speed monitoring of an electric motor
A method for determining a phase angle between voltage applied to a winding of the electric motor and an electric current flowing through the winding may...
Integrated circuit for motor drive controller applications
An integrated circuit is configured for controlling automobile door lock motors. The circuit includes half-bridge driver circuits, with each half-bridge driver...
Systems and methods for controlling electric machines
A motor controller is provided that includes an inverter configured to drive an electric motor, a rectifier configured to rectify an alternating current (AC)...
Motor control apparatus
A motor control apparatus has an inverter circuit having a plurality of pairs of upper and lower arms provided so as to correspond to a number of phases, and...
Method for controlling synchronous switch change in medium voltage
A method for controlling synchronous switching in a medium voltage inverter is disclosed. The method includes lighting on a first lamp to notify that a...
Electromotive furniture drive
An electromotive furniture drive includes an electric motor, the rotational direction of which can be reversed, a motor controller, a manual control, a battery...
Electrical motors and methods thereof having reduced electromagnetic
Motors and method of operation thereof operable in a running mode wherein the motor operates at a constant speed, and operable in a park mode wherein the motor...
Actuator control circuit
An actuator comprising a single actuator housing containing within it a motor, a controller, a memory, and a position sensor having an output, a user interface...
Large strain transparent magneto-active polymer nanocomposites
A large strain polymer nanocomposite actuator is provided that upon subjected to an external stimulus, such as a magnetic field (static or electromagnetic...
Device with suspended beam and piezoresistive means of detecting
displacement of the beam and method of...
A device with a suspended beam and piezoresistive means of detecting displacement of the beam and a method of manufacturing the device are disclosed. The device...
Lower electrode for piezoelectric element, and piezoelectric element
provided with lower electrode
In the present invention, a half-value width of a rocking curve, an average roughness of a surface, and an average grain diameter are all specified at one time...
Piezoelectric driving circuit and piezoelectric driving method
A piezoelectric driving circuit and a driving method thereof are provided. The piezoelectric driving circuit drives a piezoelectric circuit by using a first...
An energy collection system may collect and use the energy generated by an electric field. Collection fibers are suspended from a support system. The support...
Vibrator, oscillator, electronic device, and moving object
A MEMS vibrator includes: a substrate; a base portion which is disposed on the substrate; and a plurality of vibration portions which extends in a direction...
Inverter with power cell of dual structure
The present disclosure relates to an inverter with power cell of dual structure for use in high input voltage by changing a conventional 6-level cascaded...
Electronic power circuit, electric motor, and procedure for checking the
operability of an electronic power circuit
An electronic power circuit, electrical machine and a method for verifying the functionality of an electronic power circuit. The invention relates to an...
Multilevel electric power converter
There is described a multilevel electric power converter circuit comprising: N.sub.s switching elements connected in series in a closed loop; N.sub.AE...
Power factor correction device, power supply, and motor driver
There is provided a power factor correction device including, a first switch switching input power to adjust a phase difference between a current and a voltage...
A latching comparator includes a switching logic circuit coupled to receive a first signal from a first signal circuit, and a second signal from a second signal...
Composite AC-to-DC power converter with boosting capabilities using T
A boosting AC-to-DC converter An AC-to-DC converter may include a main rectifier, a first auxiliary rectifier, a second auxiliary rectifiers and a transformer...
A multi-level inverter includes: a rectifying unit to rectify received a three-phase voltage; a smoothing unit to receive the rectified voltage and provide the...
Conversion system for converting direct current into alternating current
A method and apparatus for converting direct current into alternating current. An initial voltage level of an input voltage source is changed using a dual...
Switching power supply device
In a switching power supply device having low loss in synchronous rectifying switches, exhibiting high power efficiency, and not causing troubles by reverse...
Driver circuits comprise power converters detecting automatically a topology used by the driver circuits. A controller controls a plurality of different types...
Primary-side burst mode control scheme for LLC converters
An LLC converter having a primary side burst control circuit, and a secondary side regulator circuit. The primary side burst control circuit has an inner...
Device and method for detecting an average output current of a power
A device for detecting an average output current of a power converter includes a current generation unit, a first voltage generation unit, a first current...
Primary feedback switching power converter controller with intelligent
determination of and response to output...
The embodiments herein include a primary-side controller for a switching power converter that is capable of receiving a detection signal from a secondary-side...
Control circuits and control methods for flyback converters and AC-DC
power converters thereof
The present invention relates to control circuits and methods for a flyback converter and AC-DC power converters thereof. In one embodiment, a control circuit...
Power converter controller with multiple power sources
A controller includes a bypass terminal, a first power circuit, a second power circuit, and a charging control circuit. The bypass terminal is to be coupled to...
Sampling for dimmer edge detection in power converter
A controller and a method for controlling a power converter includes a sample block coupled to generate a first, second, and third sample by sampling an input...
Power control apparatus with dynamic adjustment of driving capability
A power control apparatus with dynamical adjustment of driving capability for converting an input power into an output power includes a transformer, a switch...
Switching power-supply device
A switching power-supply device which includes a control unit configured to perform a switching control; and a resonance current detection unit configured to...
Switch mode power supply, control circuit and associated control method
A switch mode power supply having an output terminal configured to provide an output voltage, the switch mode power supply has a first switch and a control...
Volt-second integration cable compensation circuit
A power converter (such as a battery charger) includes a cable configured to deliver a source voltage and current to a load, where the cable is anticipated to...
AC-DC voltage converter with low standby power consumption and control
Disclosed are AC-DC voltage converter circuits and methods for low standby power consumption. In one embodiment, a method can include: (i) detecting operating...
Switching power supply system and control circuit of the switching power
A switching power supply system includes a transformer having a primary winding, a secondary winding and a tertiary winding, a switching device inputted to the...
Power balancing method for multiple module power supply using averaged
A power supply includes power modules. Each of the power modules includes an input stage configured to convert an input voltage into an intermediate voltage,...
Multi-phase buck DC converter
A multi-phase buck DC converter comprise a plurality of storage inductors, a plurality of low-side switches, a first input capacitor, a second input capacitor,...
Slab inductor device providing efficient on-chip supply voltage conversion
A method is disclosed to operate a voltage conversion circuit such as a buck regulator circuit that has a plurality of switches coupled to a voltage source; a...
Multiple output dual-polarity boost converter
A dual-polarity multiple-output boost converter that includes an inductor coupled in series between a high-side switch and a low-side switch. A first terminal...