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 106
Displaying 1-9 of 9 articles from this issue
Show all abstracts
    • |<
    • <
    • 1
    • >
    • >|
  • [title in Japanese]
    Article type: Cover
    1983 Volume 106 Pages Cover1-
    Published: September 25, 1983
    Released on J-STAGE: November 09, 2017
    DOIhttps://doi.org/10.20805/tokeieafj.106.0_Cover1
    JOURNAL FREE ACCESS
    Download PDF (233K)
  • [title in Japanese]
    Article type: Cover
    1983 Volume 106 Pages Cover2-
    Published: September 25, 1983
    Released on J-STAGE: November 09, 2017
    DOIhttps://doi.org/10.20805/tokeieafj.106.0_Cover2
    JOURNAL FREE ACCESS
    Download PDF (233K)
  • High Quality Temperature Compensating System for Quartz Crystal Vibrators
    Mitsuo SEKINE
    Article type: Article
    1983 Volume 106 Pages 1-10
    Published: September 25, 1983
    Released on J-STAGE: November 09, 2017
    DOIhttps://doi.org/10.20805/tokeieafj.106.0_1
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    A electric Voltage corresponding to the environmental temperature can be obtained in a MOS transistor circuit operating in the range of exponential function. By use of this circuit as a temperature sensor, frequency variation of quartz vibrators due to the ambient temperature has been compensated successfully. According to this resuIt, it has been proved that the frequency can be stabilized within ± 1 ppm in a temperature range from 0°through 50℃, and a frequency compensating system for wrist watches more precise and more stable as compared with that used so far has been obtained.
    View full abstract
    Download PDF (522K)
  • Frequency Aging Caused by CMOS Crystal Oscillator Circuit
    Mamoru TANITSU, Masumi KAIDA, Shinya YOSHINO
    Article type: Article
    1983 Volume 106 Pages 11-18
    Published: September 25, 1983
    Released on J-STAGE: November 09, 2017
    DOIhttps://doi.org/10.20805/tokeieafj.106.0_11
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    The frequency aging of a CMOS crystal oscillator may be affected by the oscillator circuit as well as the crystal resonator included. This paper deals with the experimental study of the aging caused by the circuit itself measured With an unique System. The system has a wel1- designed oven in which a crystal oscillator is driven stably at a constant temperature. The two frequencies, i. e., the frequency of the ocillator and the non-reactive frequency of the crystal resonator, can be taken out of the oven selectively through a relay, and measured accurately by referring to the LF standard wave. Using a simple equation including the two measured frequencies, the aging of an equivalent load capacitance on the crystal resonator may be estimated, which seems to be the principal cause of the frequency aging. As the result of these experiments continued for more than one hundred days, the aging of the equivalent load capacitance has been found to be unexpectedly large. It should be reduced further in order to improve the frequency stability of the CMOS crystal oscillator. The details of the method and the results of the experiments are shown in the present paper.
    View full abstract
    Download PDF (441K)
  • Development of Combination Ouartz Watch "Thermal Sensor" with Two Stepping Motors and Electronic Thermometer Function
    Tadashi HANAOKA, Masaru YOSHIDA, Toshio UMEMOTO
    Article type: Article
    1983 Volume 106 Pages 19-35
    Published: September 25, 1983
    Released on J-STAGE: November 09, 2017
    DOIhttps://doi.org/10.20805/tokeieafj.106.0_19
    JOURNAL FREE ACCESS
    Show abstractHide abstract
    A combination quartz watch (Caliber 8981) which has multi-information display by twin analogue and has electronic thermometer function using one IC chip has been developed in December 1982. The main features of this watch are discribed in the paper. The main points are as follows : 1. Twin analogue display Twin analogue display using two independent stepping motors has been developed, which is capable to indicate multi-information, i.e. seconds, alarm, dual time, and hour display for stopwatch. 2. Temperature function A low power consumption system for measuring temperature has been achieved by using an unique circuit, and the circuit for combining temperature and time functions has been also developed. By means of these developments, it has been made possible to add the thermometer function and the temperature memory function to the usual function such as normal time, calendar, alarm, dual time, and stopwatch. 3. Information transfer system The instant information transfer system from digital to anologue by pressing the button has been developed.
    View full abstract
    Download PDF (959K)
  • [title in Japanese]
    Article type: Bibliography
    1983 Volume 106 Pages 36-
    Published: September 25, 1983
    Released on J-STAGE: November 09, 2017
    DOIhttps://doi.org/10.20805/tokeieafj.106.0_36
    JOURNAL FREE ACCESS
    Download PDF (10K)
  • [title in Japanese]
    [in Japanese]
    Article type: Article
    1983 Volume 106 Pages 37-61
    Published: September 25, 1983
    Released on J-STAGE: November 09, 2017
    DOIhttps://doi.org/10.20805/tokeieafj.106.0_37
    JOURNAL FREE ACCESS
    Download PDF (1822K)
  • [title in Japanese]
    [in Japanese], [in Japanese], [in Japanese], [in Japanese], [in Japane ...
    Article type: Article
    1983 Volume 106 Pages 62-70
    Published: September 25, 1983
    Released on J-STAGE: November 09, 2017
    DOIhttps://doi.org/10.20805/tokeieafj.106.0_62
    JOURNAL FREE ACCESS
    Download PDF (754K)
  • [title in Japanese]
    [in Japanese]
    Article type: Article
    1983 Volume 106 Pages 71-73
    Published: September 25, 1983
    Released on J-STAGE: November 09, 2017
    DOIhttps://doi.org/10.20805/tokeieafj.106.0_71
    JOURNAL FREE ACCESS
    Download PDF (228K)
    • |<
    • <
    • 1
    • >
    • >|
feedback
 Top