Abstract: A piezoelectric device has a plate-shaped substrate, a first frame defining a first concave portion at one surface of the substrate, a second frame defining a second concave portion at the other surface of the substrate, a first electrode member provided at one surface of the substrate, a second electrode member provided at the other surface of the substrate, a piezoelectric unit in which a first electrode section of the piezoelectric vibration plate is fixed to the first electrode member by a conductive binder, a cover sealing the first concave portion, and a temperature detection unit in which a second electrode section of the thermistor element is fixed to the second electrode member by a conductive joining material.

Abstract: A piezoelectric device has a plate-shaped substrate, a first frame defining a first concave portion at one surface of the substrate, a second frame defining a second concave portion at the other surface of the substrate, a first electrode member provided at one surface of the substrate, a second electrode member provided at the other surface of the substrate, a piezoelectric unit in which a first electrode section of the piezoelectric vibration plate is fixed to the first electrode member by a conductive binder, a cover sealing the first concave portion, and a temperature detection unit in which a second electrode section of the thermistor element is fixed to the second electrode member by a conductive joining material.

Abstract: An apparatus for generating clock pulses comprises a Colpitts-type quartz crystal oscillator having an inverter composed of a C-MOS integrated circuit, and a quartz-crystal resonator connected with said inverter, and an amplifying circuit for amplifying the output of said quartz-crystal oscillator and delivering clock pulses as output. A first resistor is provided between the input terminal of the inverter and the quartz-crystal resonator, and the input terminal of the inverter is connected with the input terminal of the amplifying circuit. The amplifying circuit is for connection with a load composed of TTL circuits. This amplifying circuit includes a capacitor for suppressing a direct-current bias voltage from the output of the oscillator, an inverter composed of a C-MOS integrated circuit for providing the clock pulses as output, and a negative feedback circuit which utilizes negative feedback to the inverter as a direct-current bias voltage corresponding to the duty ratio of the clock pulses.