Shinku
Online ISSN : 1880-9413
Print ISSN : 0559-8516
ISSN-L : 0559-8516
Volume 21, Issue 7
Displaying 1-3 of 3 articles from this issue
  • Direct Synthesis of Si-Au, -Cu Alloys
    Akio HIRAKI, Motohiro IWAMI, Kenji GAMO, Susumu NAMBA
    1978 Volume 21 Issue 7 Pages 219-223
    Published: July 20, 1978
    Released on J-STAGE: September 04, 2009
    JOURNAL FREE ACCESS
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  • Hiroshi MIMA
    1978 Volume 21 Issue 7 Pages 224-233
    Published: July 20, 1978
    Released on J-STAGE: September 04, 2009
    JOURNAL FREE ACCESS
    Download PDF (1473K)
  • Keisuke GOTO, Kazuo ISHIKAWA
    1978 Volume 21 Issue 7 Pages 234-240
    Published: July 20, 1978
    Released on J-STAGE: September 04, 2009
    JOURNAL FREE ACCESS
    An emission controller for a thermally heated filament was designed and constructed, which was simple in construction using commercially available elements and parts, superior in stability, and versatile in the research of vacuum science. The design was simplified by using integrated circuits (IC's) and a photo-coupled isolator. The two most important facts that dominate the characteristics of the controller should be the stability of a zener diode that was used for a voltage reference and an overall frequency response of the system including a thermal characteristics of the filament. The range of the emission current was 0 to 10 mA. The stability measured was 0.35% for the change of a line voltage from 90 to 110 V, 0.01%/°C for the change of room temperature, and 0.1% with time after a warming up for only 30 seconds. Modifications for larger emission current and for better stability are also described.
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