Abstract: A power circuit for a power amplifier which operates in an inactive period and an active period is provided and includes a power supply unit, a current limiting unit, a storage unit, and a converting unit. The power supply unit provides a first current. The current limiting unit is arranged to process the first current to generate a second current. The storage unit is arranged to provide a storage voltage. The storage unit is charged by the second current during the inactive period and discharged by a third current during the active period. The converting unit provides an active power to the power amplifier according to the storage voltage, the second current, and the third current during the active period.

Abstract: A lighting structure adapted to be disposed at an electronic apparatus is provided. The lighting structure includes a lighting module, a first elastic element, a latch, and a second elastic element. The lighting module has a light source and a stopper element. The first elastic element is connected to the lighting module. The latch has an interfering portion for blocking the stopper element and is capable of sliding in the electronic apparatus. The second elastic element is connected to the latch. When the latch is subjected to an external force and slides to deform the second elastic element, the stopper element disengages from the interfering portion, and the first elastic element rotates the lighting module, such that the lighting module is at a different position, and the light source is used to illuminate part of the electronic apparatus.

Abstract: A wireless LAN RF module uses parasitic element compensation devices in an antenna select circuit to improve port isolation. In addition, various combinations of RC filter networks and spurious radiation attenuators are incorporated into the Quad Demod/Mod and Synthesizer ;/circuits to provide suppression of EMI susceptibility and radiation throughout the RF module.

Abstract: A wireless LAN RF module uses a low power transistor switchable voltage divider circuit to control the bias input of a GaAs MESFET output power amplifier. This bias control circuit provides stable, high speed on-off switching of the power amplifier stage by applying low power bias voltages to the MESFET gate input, rather than by interrupting the high power MESFET drain to Vdd circuit.

Abstract: The present invention relates to a telephone with an interface connection with the television, which includes a basic telephone set, central processing unit (CPU), display controller and a control program. The control program controls the whole operating procedures of the telephone of the invention. Under the operating procedures, the CPU transmits the phone-call information received by the basic telephone set to the display controller. In accordance to the received information, the display controller generates and transports a corresponding signal to a television. With the telephone of the invention, the information of a telephone call can be displayed in a television.