Journal of the Horological Institute of Japan
Online ISSN : 2432-1915
Print ISSN : 0029-0416
ISSN-L : 0029-0416
Search
Advanced search
OR
Browse
Search
Volume 127
Displaying 1-7 of 7 articles from this issue
Show all abstracts
    • |<
    • <
    • 1
    • >
    • >|
  • [title in Japanese]
    Article type: Cover
    1988 Volume 127 Pages Cover1-
    Published: December 20, 1988
    Released on J-STAGE: November 09, 2017
    DOIhttps://doi.org/10.20805/tokeieafj.127.0_Cover1
    JOURNAL FREE ACCESS
    Download PDF (33K)
  • [title in Japanese]
    Article type: Cover
    1988 Volume 127 Pages Cover2-
    Published: December 20, 1988
    Released on J-STAGE: November 09, 2017
    DOIhttps://doi.org/10.20805/tokeieafj.127.0_Cover2
    JOURNAL FREE ACCESS
    Download PDF (33K)
  • Temperature Compensation IC System with All Logical Adjustment
    Yuichi INOUE, Hirishi ODAGIRI, Hiroyuki MASAKI
    Article type: Article
    1988 Volume 127 Pages 3-15
    Published: December 20, 1988
    Released on J-STAGE: November 09, 2017
    DOIhttps://doi.org/10.20805/tokeieafj.127.0_3
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    A conventional temperature compensation IC system is required to provide an oscillating capacity change-over switch in order that a normal type pace measuring instrument can be used. The new temperature compensation IC system we developed here has realized an "all logical adjustment" without an oscillating capacity change-over switch by introducing a "new method of a pace expression". It has become easier to provide a watch with high accuracy by use of the "all logical adjustment".
    View full abstract
    Download PDF (648K)
  • Frequency Temperature Characteristics and Electrical Characteristics of a New Shape X Cut Longitudinal Quartz Crystal Resonator
    Hirofumi KAWASHIMA, Masaru MATSUYAMA, Mitsuhiro NAKAZATO
    Article type: Article
    1988 Volume 127 Pages 16-28
    Published: December 20, 1988
    Released on J-STAGE: November 09, 2017
    DOIhttps://doi.org/10.20805/tokeieafj.127.0_16
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    This paper describes the frequency temperature characteristics and electrical characteristics of a new shape X cut longitudinal quartz crystal resonator. According to miniaturization of consumer products and communication equipments, miniaturization of a quartz crystal resonator which is used for them is also required. Simultaneously, automatic assembly lines by use of robots are positively adopted in manufacturing processes. Under these circumstances, a surface mounting type quartz crystal resonator is required and to achieve this requisite, a new design of the resonator including a supporting method is naturally needed. This paper proposes a new shape longitudinal quartz crystal resonator, and analyses and examines frequency temperature characteristics and electrical ones of the resonator. In analysis procedure, first, equation of motion for a new shape longitudinal quartz crystal resonator consisting of a vibrational portion and supporting portions is derived by an energy method. From the obtained equation of motion, a frequency equation is calculated. Next, frequency temperature characteristics and electrical ones of the resonator are analysed, and the analysed results are compared with the experimental values. Consequently, it is shown that both results agree well.
    View full abstract
    Download PDF (565K)
  • Development of a Phone Dialer Watch
    Toshiharu AIHARA, Satoshi KINOSHITA, Yoshinobu YAMADA
    Article type: Article
    1988 Volume 127 Pages 29-37
    Published: December 20, 1988
    Released on J-STAGE: November 09, 2017
    DOIhttps://doi.org/10.20805/tokeieafj.127.0_29
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    A new data bank watch named Phone Dialer has been developed. It is capable to dial the push-button telephone by being coupled acoustically to the telephone handsets. The technical feature are as follws:(1) The low power Dual Tone Multi-Frequency (DTMF) generator is driven by low voltage (3 V lithium battery) and low frequency (32768 Hz quartz oscillator). (2) One chip C-MOS LSI contains DTMF generator, LPF's (switched capacity), and amplifiers of sound transducer as well as data bank watch functions. (3) A small size dynamic type sound transducer (φ=10.4 mm, t=4.0 mm) is characterized by lower resonance frequency (f_0). In this paper, these features are described.
    View full abstract
    Download PDF (437K)
  • [title in Japanese]
    [in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
    Article type: Article
    1988 Volume 127 Pages 38-61
    Published: December 20, 1988
    Released on J-STAGE: November 09, 2017
    DOIhttps://doi.org/10.20805/tokeieafj.127.0_38
    JOURNAL FREE ACCESS
    Download PDF (1468K)
  • [title in Japanese]
    [in Japanese]
    Article type: Article
    1988 Volume 127 Pages 62-64
    Published: December 20, 1988
    Released on J-STAGE: November 09, 2017
    DOIhttps://doi.org/10.20805/tokeieafj.127.0_62
    JOURNAL FREE ACCESS
    Download PDF (245K)
    • |<
    • <
    • 1
    • >
    • >|
feedback
 Top