Browsing by Author "JENG Shyr-Long"

Now showing 1 - 4 of 4

COMMUNICATION SYSTEM BETWEEN ELECTRIC BIKES AND COMMUNICATION METHOD THEREOF
(2015-04-30)
CHANG Yi
;
CHIENG Wei-Hua
;
JENG Shyr-Long
;
CHENG Stone
;
HSU Fu-Jen
The present invention provides a communication system between electric bikes and communication method thereof. The communication system comprises a plurality of electric bikes. Each of the electric bikes comprises a monitor module and a portable electric device, wherein the portable device further comprises a storing unit and a WiFi module. The monitor module is configured to monitor the status of the electric bike to generate a plurality of monitor information. When a temporary network is formed between the electric bikes, the electric bikes transmit the monitor information each other through the temporary network and each of the electric bikes stores the received monitor information.
Current limit circuit apparatus
(2013-09-19)
CHEN Tsung-Lin
;
CHANG Edward Yi
;
CHIENG Wei-Hua
;
CHENG Stone
;
JENG Shyr-Long
The present invention provides a current limit circuit apparatus, coupled with the gate of a GaN transistor. The current limit circuit comprises a diode, a first transistor, a second transistor, a first resistor, a second resistor, a third resistor and a fourth resistor. The source and the drain of the first transistor couple with the diode. The source of the second transistor couples with the gate of the first transistor. The source of the first transistor couples with the first transistor. The source of the second transistor couples with the second resistor. The third resistor couples with the fourth resistor and the gate of the first transistor. The first transistor turned off and the gate current is limited. When the current of the gate of the GaN transistor exceeds the predetermined value, the breakdown voltage is increased by limiting the gate current.
FLOW CONTROL DEVICE AND THE METHOD FOR CONTROLLING THE FLOW THEREOF
(2015-04-30)
CHIENG Wei-Hua
;
CHANG Yi
;
JENG Shyr-Long
;
WANG Chia-Chuan
;
SHIH Ching-Wei
The flow control device is provided and the method for controlling the flow. A flow control device comprises: a body including a first end, opposite second end, a first flow channel and a second flow channel, a plug and a laminar flow layer accommodated in the second flow channel; a telescopic device accommodated the length of the telescopic device is adjustable, so as to control the flow of fluid flowing through the opening area in the body.
High-side driver circuit
(2013-09-19)
CHEN Tsung-Lin
;
CHANG Edward Yi
;
CHIENG Wei-Hua
;
CHENG Stone
;
JENG Shyr-Long
The present invention provides a high-side driver circuit including a power transistor, the first transistor, the second transistor, the second capacitor, the second diode, a start-up circuit. The start-up circuit is coupled between a resistor and the second capacitor to complete a gate driving circuit. And, the aforementioned resistor can either be the gate resistance of the power transistor or an external resistor. The design of start-up circuit enables the functionality of the bootstrap capacitor of being charged to a designate voltage level. Thus, the depletion-mode transistor can be controlled to turn on/off without a floating voltage source or a negative voltage source.