Joseph En-Cheng Chang

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New Haven, CT, US

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Patents Grantslast 30 patents

Information Patent Grant
Resonant converter circuit with suppression of transients during ch...
- Patent number 6,541,925
- Issue date Apr 1, 2003
- Koninklijke Philips Electronics N.V.
- Chin Chang
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Voltage regulated power supply utilizing phase shift control
- Patent number 6,016,257
- Issue date Jan 18, 2000
- Philips Electronics North America Corporation
- Chin Chang
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
Information Patent Grant
Switching scheme for power supply having a voltage-fed inverter
- Patent number 5,781,418
- Issue date Jul 14, 1998
- Philips Electronics North America Corporation
- Chin Chang
- H02 - GENERATION CONVERSION OR DISTRIBUTION OF ELECTRIC POWER