1
Yungtaek Jang, Milan M Jovanovi&cacute: Contactless electrical energy transmission system. Delta Electronics, Laurence J Marhoefer, Venable, October 9, 2001: US06301128 (183 worldwide citation)

A high-performance contactless electrical energy transmission (CEET) technique which employs the inductive energy transmission principle is described. The proposed technique enables the implementation of high-efficiency, high-power-density, fully-regulated CEET systems suitable for applications with ...


2
Milan M Jovanovic: Technique for reducing rectifier reverse-recovery-related losses in high-voltage high power converters. Delta Electronics, Edward C Kwok, Skjerven Morrill MacPherson Franklin & Friel, April 7, 1998: US05736842 (105 worldwide citation)

A circuit technique that substantially reduces the boost-converter losses caused by the reverse-recovery characteristics of the rectifier is described. The losses are reduced by inserting an inductor in the series path of the boost switch and the rectifier to control the di/dt rate of the rectifier ...


3
Yungtaek Jang, Milan M Jovanovic: Contactless electrical energy transmission system having a primary side current feedback control and soft-switched secondary side rectifier. Delta Electronics, Venable, Robert Babayi, August 23, 2005: US06934167 (101 worldwide citation)

A contactless electrical energy transmission system includes a transformer having a primary winding that is coupled to a power source through a primary resonant circuit and a secondary winding that is coupled to a load through a secondary resonant circuit. The primary and secondary resonant circuits ...


4
Yungtaek Jang, Milan M Jovanovic: Constant frequency resonant inverters with a pair of resonant inductors. Delta Electronics, Laurence J Marhoefer, Venable, June 12, 2001: US06246599 (99 worldwide citation)

A constant frequency, DC/AC inverters that employs a coupled inductor to achieve ZVS in a wide range of load current and input voltage with a reduced circulating energy. In the circuits of the invention, the two windings of the coupled inductors are connected in series and their common terminal is c ...


5
Daniel Liu, Chia Fu Liu: Fastener for all-purpose power supply sockets. Delta Electronics, July 17, 2001: US06261109 (85 worldwide citation)

A fastener for all-purpose power supplies sockets includes a socket and at least one plug engageable with the socket. The socket has a latch cavity in a lateral wall. The plug has a moveable fastening member that has a first button engaging with a latch bar. The latch bar has a latch head engageable ...


6
Yungtaek Jang, Milan M Jovanovic: Soft-switched full-bridge converters. Delta Electronics, Venable, March 12, 2002: US06356462 (77 worldwide citation)

A family of soft-switched, full-bridge pulse-width-modulated (FB PWM) converters provides zero-voltage-switching (ZVS) conditions for the turn-on of the bridge switches over a wide range of input voltage and output load. The FB PWM converters of this family achieve ZVS with the minimum duty cycle lo ...


7
Guisong Huang, Alpha J Zhang, Yilei Gu: LLC series resonant DC-to-DC converter. Delta Electronics, Bo In Lin, February 5, 2002: US06344979 (65 worldwide citation)

The present invention discloses a DC-to-DC converter. The DC-to-DC converter includes a square wave generator for generating a sequence of output voltages having a waveform of square wave. The DC-to-DC converter further includes a resonant tank connected to the square wave generator comprising a ser ...


8
Milan M Jovanovic, Laszlo Huber: AC/DC flyback converter with improved power factor and reduced switching loss. Delta Electronics, Lane Aitken & McCann, November 23, 1999: US05991172 (64 worldwide citation)

A new single stage, single switch input current shaping circuit features substantially reduced turn-on switching losses of the switch in the flyback-converter. In this technique, the turn-on switching losses due to the discharge of the output capacitance of the switch are reduced by turning on the s ...


9
Yu Ming Chang: Zero voltage, zero current switching power factor correction converter with low conduction loss and low switching loss. Delta Electronics, Trojan Law Offices, August 26, 2003: US06611130 (62 worldwide citation)

A zero voltage, zero current switching power factor correction converter includes a boost unit including a first switch, a second switch and a resonant circuit at least having two energy storage elements, wherein the resonant unit is operatively configured to alternatively discharge electric energy ...


10
Thomas J Haven, Kurt R Munson: Polarization recapture system for liquid crystal-based data projectors. Delta Electronics, Carmen C Cook, Patent Law Group, May 25, 2004: US06739723 (59 worldwide citation)

A projection display system includes a light source emitting a randomly polarized light and a polarization recapture system including a tunnel integrator and a transmitting/reflecting polarizer coupled to the output end of the tunnel integrator. The input end of the tunnel integrator includes an inp ...



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