Chang-Hsing
Chang-Hsing Chen, Taipei County TW
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20080229123 | Power transmission line for power supply clusters - A power transmission line for power supply clusters is electrically connected to a personal computer and a power supply cluster to allow the power supply cluster to receive ON/OFF signals and has a signal delay circuit to generate a time difference for the ON/OFF signals so that the power supply cluster delivers power output in an asynchronous fashion to drive the personal computer. | 09-18-2008 |
Chang-Hsing Chen, Hsin Chuang City TW
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20110122656 | POWER DEVICE WITH ISOLATED VARYING-FREQUENCY PWM CONTROL - A power device with isolated varying-frequency PWM control contains a transformer having a primary side and a secondary side; a varying-frequency PWM chip located at the secondary side, the varying-frequency PWM chip containing a frequency adjustment circuit and PWM control circuit, the PWM control circuit having at least an output terminal; a sampling circuit connected to the varying-frequency PWM chip; and a separation circuit having at least a terminal connected to the varying-frequency PWM chip; wherein the at least one terminal of the PWM control circuit drives a switch so that various types of transformer is applicable; the frequency adjustment circuit of the varying-frequency PWM chip dynamically adjusts a periodic signal's frequency according to load condition so that a pulse signal from the PWM control circuit is adjusted as well to reduce switching loss and to enhance energy conservation. | 05-26-2011 |
Chang-Hsing Chen, New Taipei City TW
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20120320633 | VARIABLE FREQUENCY PWM SYNCHRONOUS RECTIFIER POWER SUPPLY - The present invention discloses a variable frequency PWM synchronous rectifier power supply comprising: a transformer, a PWM control circuit and a synchronous rectification switch circuit. The transformer has a primary side and a secondary side, and an isolation circuit is provided for separating the primary side and the secondary side, and the primary side uses a transmit/receive switch circuit to drive the transformer, and the secondary side uses a filter circuit to output different voltages to an external load. The PWM control circuit is situated on the secondary side and coupled to the isolation circuit and filter circuit, for generating a control signal to the isolation circuit to drive the transmit/receive switch circuit. The synchronous rectification switch circuit is situated on the secondary side and coupled to the PWM control circuit for receiving a timing delay control signal provided by the PWM control circuit. | 12-20-2012 |
Chang-Hsing Chu, Taiwan TW
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20080308834 | LIGHT-EMITTING DIODE - A light-emitting diode (LED) is provided, wherein the LED comprises an epitaxial structure, a bonding layer and a composite substrate. The composite substrate comprises a patterned substrate having a pattern and a conductive material layer disposed around the patterned substrate. The bonding layer is formed on the composite substrate. The epitaxial structure is formed on the bonding layer. | 12-18-2008 |
Chang-Hsing Lin, Taipei County TW
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20100213654 | TORSION SPRING AND LAMP HAVING THE SAME - A lamp includes a shell with an assembling portion, a main body disposed in the shell, and a torsion spring. The torsion spring includes a spring body, a first supporting part, and a second supporting part. The spring body is assembled to the assembling portion. The first supporting part includes a first arm connected to an end of the spring body, a second arm near another end of the spring body and a first bending part connected between the first supporting part and the second supporting part. A structure of the second supporting part is similar to that the first supporting part and is connected to the spring body. The first supporting part and the second supporting part are suitable for tightly clamping the assembling portion and a fixing end respectively by the force of the spring body. | 08-26-2010 |