Search Results - electronics

25 Results Sort By:
Soft-Switching Inverter Efficiency Improvement with Hybrid Switch
A hybrid switch comprising two semiconductor switches connected in parallel but having different voltage drop characteristics as a function of current facilitates attainment of zero voltage switching and reduces conduction losses to complement reduction of switching losses achieved through zero voltage switching in power converters such as high-cur...
Published: 9/24/2014   |   Inventor(s): Jih-Sheng (Jason) Lai, Wensong Yu
Keywords(s): Electronics
Category(s): Devices, Electrical, Energy, Engineering
Electrical Power System With High-Density Pulse Width Modulated (PWM) Rectifier
The present invention provides a single phase Pulse Width Modulated (PWM) rectifier for providing power to a direct current (DC) load that may have an increased power density relative to previous systems.
Published: 9/24/2012   |   Inventor(s): Ruxi Wang, Fred Wang, Dushan Boroyevich, Rolando Burgos, Kaushik Rajashekara
Keywords(s): Electronics
Category(s): Electrical
Three-Phase EMI Noise Separator
Common mode (CM) and differential mode (DM) components of multi-phase conducted electromagnetic interference (EMI) noise emanating from electronic circuits such as power converters/inverters are separated by respective coupled inductors connected to each phase of three or more phases and which are coupled to each other differently for CM and DM noi...
Published: 9/20/2012   |   Inventor(s): Shuo Wang, Fred Lee
Keywords(s): Electronics
Category(s): Electrical
Self-Oscillating Electronic Ballast with Dimming Control
High-frequency electronic ballasts for gas discharge lamps are used widely in lighting systems today because of their merits of small size, light weight, high light luminous efficacy, long life, and no flicker no audible noise. In addition to numerous benefits over magnetic ballasts, electronic ballasts can provide dimming control, which is crucial...
Published: 9/14/2012   |   Inventor(s): Fengfeng Tao, Fred Lee
Keywords(s): Electronics
Category(s): Electrical
Interleaved Inductor-Less Resonant Converters with Auto Transformer
CPES proposed inductor-less resonant converter has high efficiency. However, the output voltage ripple is huge since it uses the leakage inductor resonating with output capacitor. This invention solved the ripple problem by interleaving two-phase and use autotransformer to do the voltage averaging. The simulation result demonstrates that the rip...
Published: 9/11/2012   |   Inventor(s): Ming Xu, Julu Sun, Fred Lee
Keywords(s): Electronics
Category(s): Electrical
Magneto-Electric Laminate Composite Type Magnetic Field and Electric Current Sensors Operated in the Longitudonal-Longitudonal (L-L) Mode, and Longitudonal-Tranverse (L-T) Mode
This is a new device design of a magneto-electric laminate composite for magnetic field and electric current sensing. This sensor gives high dynamic range. It gives magneto-electric coefficients 10-100x greater than any previous design.
Published: 9/5/2012   |   Inventor(s): Dwight Viehland, Shu-Xiang Dong, Jie-Fang Li
Keywords(s): Electronics
Category(s): Devices
Design Methods of Noise Separator for Good Wideband Performance
This invention disclosure addresses the design of noise separator for conducted electromagnetic interference (EMI) diagnosis. Traditional EMI diagnosis is trial-and-error, wasting lots of time and money. Starting from the function design in circuits to practical design on component and layout level, this invention disclosure claims the methods deve...
Published: 9/3/2012   |   Inventor(s): Shuo Wang, Fred Lee
Keywords(s): Electronics
Category(s): Electrical
Novel Interleaving Strategy for Multi-Channel PFC
Interleaving multi-phase PFC to reduce the input ripple current is a very popular technology for the AC-DC switching mode power supply. With smaller input ripple current, the EMI filter size can be reduced so that higher power density can be achieved. However, by applying this interleaving technology for today’s AC-DC power supply, the EMI ...
Published: 9/3/2012   |   Inventor(s): Chuanyun Wang, Ming Xu, Fred Lee
Keywords(s): Electronics
Category(s): Electrical
An Analog/Mixed Signal Orthogonal-Frequency-Division-Multiplexing Analog-to-Digital Converter Architecture
The invention is an analog-to-digital converter (ADC) architecture for use with Orthogonal-Frequency-Division-Multiplexed modulation. The OFDM ADC replaces the ADC and FFT processor in the typical OFDM receiver. The invention processes the Fourier Transform as part of the analog-to-digital conversion process, reducing the total system power in tw...
Published: 9/3/2012   |   Inventor(s): Mark Lehne, Sanjay Raman
Keywords(s): Electronics, Wireless Portfolio
Category(s): Communication
Canceling the Winding Capacitance of Inductors to Greatly Improve its High Frequency Filtering Performance
Winding capacitance of inductors is detrimental to inductor's high frequency performance since high frequency current will bypass the inductance via winding capacitance. An inductor is no longer an inductor but a capacitor at high frequencies, so that it cannot effectively block high frequency current. Reducing or canceling the winding capacitance...
Published: 9/3/2012   |   Inventor(s): Shuo Wang, Fred Lee
Keywords(s): Electronics
Category(s): Electrical
1 2 3 
© 2019. All Rights Reserved. Powered by Inteum