Abstract: An integrated circuit device boosts an output voltage which is to be boosted based on the reference power supply voltage, based on another power supply voltage before the reference power supply voltage is supplied.

Abstract: An integrated circuit device boosts an output voltage which is to be boosted based on the reference power supply voltage, based on another power supply voltage before the reference power supply voltage is supplied.

Abstract: A method for inspecting a clad pipe, having the steps of: transmitting longitudinal ultrasonic waves with wide-band characteristic to make it incident on an inner surface of a clad pipe, the clad pipe including a metal pipe with a coarse crystal grain structure and a different kind of clad metal built up on an inner surface thereof; and receiving reflected echoes of the longitudinal ultrasonic waves on the inner surface side thereof. When a flaw generated in an interface between the metal pipe and the different kind of metal is to be detected, the longitudinal ultrasonic waves in a frequency range of 10 to 30 MHz are preferably used as the ultrasonic waves. When the pipe thickness of the clad pipe is to be measured, the longitudinal ultrasonic waves in a frequency range of 2 to 10 MHz are preferably used as the ultrasonic waves.