Abstract: There is provided a power amplifier circuit with improved operation speed of the protection function against overcurrent or overvoltage. The power amplifier circuit includes an amplifier configured to amplify a radio frequency signal and output the radio frequency signal, a bias current supply circuit configured to supply a bias current to the amplifier, a detection circuit configured to detect whether the current or voltage of the amplifier is equal to or greater than a predetermined threshold; and a draw circuit configured to, when the detection circuit detects that the current or voltage is equal to or greater than the predetermined threshold, draw at least a part of the bias current supplied to the amplifier.

Abstract: An apparatus for measuring articles includes a conveying part, a plurality of measuring parts and a determining part. The conveying part includes a plurality of conveyers placed adjacently in series for conveying articles successively in a straight line. The plurality of measuring parts measure weight or dimensions of the respective articles successively conveyed by the conveying part. The determining part determines the weight or the dimensions of the respective articles based on the measured values by the plurality of the measuring parts.

Abstract: An apparatus for measuring articles includes a conveying part, a plurality of measuring parts and a determining part. The conveying part includes a plurality of conveyers placed adjacently in series for conveying articles successively in a straight line. The plurality of measuring parts measure weight or dimensions of the respective articles successively conveyed by the conveying part. The determining part determines the weight or the dimensions of the respective articles based on the measured values by the plurality of the measuring parts.