Cheng Uei Precision Industry Co., Ltd.

Lin Yean Lin

James Cheng Lee

Kuo Yang Wu

Kuo Wei Chang

Yu Chin Huang

Shih Hsun Tu

A voltage balance circuit includes at least two power supply circuits, at least two diodes, a load, at least two voltage dividing circuits and at least two variable resistors. Each power supply circuit has an output end. Each power supply circuit outputs an output voltage. Positive electrodes of the at least two diodes are electrically connected with the output ends of the at least two power supply circuits. Negative electrodes of the at least two diodes are electrically connected with the load. Each voltage dividing circuit has a first resistor and a second resistor. One end of the first resistor and one end of the second resistor of each voltage dividing circuit are connected in series. The other end of the first resistor of each voltage dividing circuit is connected with the output end. Each second resistor is connected with one variable resistor in parallel.

Voltage balance circuit

A back cover with an antenna element includes a cover body having a main portion, and an antenna element. A periphery of the main portion protrudes frontward to form a peripheral wall. The cover body is further equipped with a magnetic part. The antenna element is assembled in the cover body. The antenna element has a base portion, a connecting portion, a first extension portion and a second extension portion extended upward from the base portion. The first extension portion is disposed adjacent to one side of the peripheral wall of the cover body. The second extension portion is adjacent to the first extension portion. A length of the first extension portion is longer than a length of the second extension portion. A connecting portion is connected between the first extension portion and a top end of the second extension portion.

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Taipei, Taiwan

Lin Yean Lin