Resources Contact Us Home
Zhu; YaJiang
Shanghai, CN
No. of patents:

Patent Number Title Of Patent Date Issued
8587968 Control circuits and methods for switching mode power supplies November 19, 2013
A switching mode power supply (SMPS) includes a transformer having a primary winding, a secondary winding for providing an output voltage, and an auxiliary winding. The SMPS also includes a power switch coupled to the primary winding. A first control circuit is coupled to the secondary
8125799 Control circuits and methods for switching mode power supplies February 28, 2012
Circuits and method for sensing a system output voltage change and transmitting an electrical signal to an auxiliary winding on the primary side. In an embodiment, a primary side controller detects the electrical signal and turns a power switch on and off to transfer energy from a pr
8064231 Short circuit protection circuit for a pulse width modulation (PWM) unit November 22, 2011
A short circuit protection circuit for a pulse width modulation (PWM) unit which includes a PWM logic control circuit, an under voltage lookout (UVLO) circuit and an internal clock circuit; wherein the UVLO circuit detecting a bias power (Vcc) and delivering an UVLO signal when the bias
8045348 Switching mode power supply controller with high voltage startup circuits October 25, 2011
A controller for a switching mode power supply includes two semiconductor chips. The first semiconductor chip has a high-voltage startup transistor coupled to a high voltage supply input terminal and configured to provide a charging current in a startup phase or protection mode of a swit

  Recently Added Patents
Systems and methods for implementing multi-application tabs and tab sets
Intelligent sensor network
Verifiable service policy implementation for intermediate networking devices
Device for preparing a body fluid for a bacteriological analysis
Combination photovoltaic and wind power generation installation
Metal-doped oxide, method of preparing the same, and solid oxide electrolyte using the metal-doped oxide
Face recognition through face building from two or more partial face images from the same face
  Randomly Featured Patents
Separable-shaft golf club
Particle beam system
Self aligned 1 bit local SONOS memory cell
Insert for electric devices testing apparatus
Fabrication method for spin valve sensor with insulating and conducting seed layers
Dynamic memory word line driver scheme
Scrubber for cleaning dust-loaded gas and steam
Anti-burglar alarming door bell
Printed circuit cleaning apparatus