|
Match
|
Document |
Document Title |
|
|
US20090316453 |
CONVERTER CONTROL DEVICE
A converter control device includes a converter device formed by three converter circuits connected together in parallel between a secondary battery as a first power source and a fuel cell as a...
|
|
|
US20090268491 |
POWER CONVERTER WITH RETRACTABLE CABLE SYSTEM
A modular power converter including a first housing enclosing a converter circuit, and a selectively detachable second housing enclosing a retracting power cable. In a first orientation, the...
|
|
|
US20090190381 |
METHOD OF MODULATING POWER SUPPLY CONVERSION EFFICIENCY CURVE
The present invention discloses a method of modulating a power supply conversion curve. The method obtains an input power and an output power of the power supply device for a conversion efficiency...
|
|
|
US20090168474 |
POWER CONVERTING DEVICE AND METHOD FOR CONTROLLING THE SAME
In a system to which a fluctuating load is connected, compensating for fluctuation in voltage harmonics at the load connecting point and fluctuation in system current harmonics has been difficult...
|
|
|
US20090116269 |
Power supply with reduced power consumption when a load is disconnected from the power supply
Detection and control circuitry are added to a conventional power supply to detect when a load, such as a portable electronic device, has been disconnected from the power supply and, when...
|
|
|
US20090046487 |
HIGH EFFICIENCY DC-DC CONVERTER USING PULSE SKIPPING MODULATION WITH PROGRAMMABLE BURST DURATION
A DC-DC converter and method of improving the efficiency of a DC-DC converter at low load current levels using pulse skipping modulation (PSM) with controllable burst duration NT clk , where T clk ...
|
|
|
US20090003022 |
Non-Contact Power Supply System
A non-contact power supply system is provided in which current phases of induction lines are matched. According to the output current of a power supply unit ( 21 ) and the power consumption of...
|
|
|
US20080316780 |
Limitation of voltage pulse
Method and arrangement for controlling the output voltage pulses of a PWM frequency converter, in which PWM frequency converter is a network bridge ( 10 ) for rectifying the alternating voltage of...
|
|
|
US20080278984 |
AUTOMATIC ZERO VOLTAGE SWITCHING MODE CONTROLLER
A switching DC to AC power converter includes an automatic zero voltage switching (ZVS) mode controller. The automatic zero voltage switching mode controller may adjust a ZVS dead-time in...
|
|
|
US20080247202 |
METHOD AND APPARATUS FOR SENSING MULTIPLE VOLTAGE VALUES FROM A SINGLE TERMINAL OF A POWER CONVERTER CONTROLLER
An example controller for a power converter according to aspects of the present invention includes a switching control that switches a power switch to regulate an output of a power converter. The...
|
|
|
US20080170419 |
Active peak voltage-limiting clamp circuit
The present invention discloses an active peak voltage-limiting clamp circuit, which comprises a primary switch unit and a secondary switch unit that are used to control the coil current of a...
|
|
|
US20080170420 |
Method and control circuit with input voltage detection for the control and protection of power converter
The present invention provides a method and a control circuit to detect an input voltage for the control and protections of a power converter. It includes a current sense circuit for generating a...
|
|
|
US20080144343 |
Compensation circuit and compensation method for current mode power converters
A compensation circuit and a compensation method for providing compensation of a power converter are proposed. A current sense circuit is coupled to receive a switching current for generating a...
|
|
|
US20080123377 |
Circuit and method for predicting a valley timing for a voltage across a switching device
Disclosed are circuits and methods for use in a control circuit of a switching mode power supply for turning on a switching device in the switching mode power supply when the voltage across the...
|
|
|
US20080062731 |
DUTY FEED FORWARD METHOD AND APPARATUS FOR MODULATING A DUTY OF A PMW SIGNAL AND POWER CONVERTING METHOD AND POWER CONVERTER USING THE SAME
The duty of a PWM signal in a power converter is extracted to feed forward to modulate the slope of a linear oscillating ramp signal or the voltage level of an error signal, so as to modulate the...
|
|
|
US20080049470 |
Induction Heating Apparatus
The present invention provides an induction heating apparatus that can detect that a power factor correction circuit is in operation or in non-operation. The induction heating apparatus includes a...
|
|
|
US20080031026 |
Automatic Sensing Power Systems and Methods
An automatic sensing power system automatically determines a power requirement for an electrical device, converts power to the required level, and outputs the power to the electrical device when...
|
|
|
US20080031025 |
DC POWER CONVERSION CIRCUIT WITH CONSTANT CURRENT OUTPUT
A DC power conversion circuit with constant current output includes a DC voltage source, a driving circuit and a control signal generator. The DC voltage source is used for providing DC power. The...
|