Hon Hai Precision Industry Co., Ltd.

Hong-fu Jin Precision Industry (shenzhen) Co., Ltd.

He-Ping Chen

Kuo-Wei Hung

Jun-Jie Deng

Hong-Hao Kang

He-Ling Pei

Shou-Gang Feng

A charger device includes a switch, a voltage converter, a constant current circuit, and an automatic disconnecting circuit. The switch is connected to an alternating current (AC) power supply which triggers the charger device to work. The automatic disconnecting circuit is connected to the battery, the voltage converter and the constant current circuit automatically disconnect the voltage converter from the AC power supply when the battery is fully charged. The automatic disconnecting circuit comprises a first resistor, a voltage follower, a second resistor, a first zener diode, a variable resistor, a comparator, a third resistor, a first switch element, a diode and a relay. The relay comprises a coil and a normally-open switch connected between the AC power supply and voltage converter. The normally-open switch turns on or turns off to control a connection between the charger device and the AC power supply.

Charger device

A radio frequency (RF) testing apparatus, for testing device under test (DUT) comprising a receiving antenna, includes a pair of transmitting antennas transmitting wireless communication signals to the receiving antenna, a shielding box, a first filter and a second filter. The shielding box includes a transmitting box, a receiving box for receiving the DUT, a connecting box connecting between the transmitting box and the receiving box and a pair of transmitting antennas fixed on the transmitting box and suspending towards the connecting box. The connecting box includes a microwave absorption medium on the connecting box and communicates with the receiving box. The first filter is mounted on the connecting box and the transmitting box to electrically connect with the transmitting antenna. The second filter is mounted on the receiving box to electrically connect with the DUT.

Radio frequency testing apparatus

A broadband filter filtering noise over a first conductive wire, a second conductive wire, and a third conductive wire includes a differential-mode filtering circuit connected to both the first conductive wire and the second conductive wire and a common-mode filtering circuit connected to both the first conductive wire and the second conductive wire. The differential-mode filtering circuit includes two inductors and two capacitors for filtering differential-mode noise of different frequencies. The common-mode filtering circuit includes two inductors and six capacitors filtering common-mode noise of different frequencies.

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Shenzhen, China

He-Ping Chen