Abstract: A package base for mounting an electronic element, an electronic device using the package base, particularly a crystal resonator. The package base comprises an insulative substrate, and an internal electrode formed at a predetermined position on the substrate, the internal electrode being bonded to the electronic element. A junction member comprising a junction layer composed of a conductive junction alloy having a melting point higher than the mounting temperature and an anti-oxidation conductive layer covering the junction layer is further provided on the internal electrode.

Abstract: The present invention provides a vibration gyro having good detection sensitivity and good detection accuracy and which comprises four beams provided on a base portion and which are made substantially stationary, for any type of vibration used. Since the vibration stimulus and detection make use of the same vibration mode, and the beams is so configured that output signals output from the beams cancel noise output generated by externally applied vibration, it is possible that matching of the excitation to obtain a large output signal and the resonant frequency for detection can be achieved without placing great expectations on machining and assembly precision, and without affecting adversely to the performance thereof depending upon a supporting method.

Abstract: A four-beam tuning fork is provided in which the base part thereof is stationary regardless of the vibration of the resonator, the same vibration mode being used for both excitation and detection, and the outputs from a plurality of beams are used to cancel the noise output caused by externally applied vibration