Author Fujitsuka Takeshi| Agusa Toru|
Published Date 1978-02-25
Publication Title Memoirs of the School of Engineering, Okayama University
Volume volume12
Content Type Departmental Bulletin Paper
Author Fujitsuka Takeshi| Agusa Toru|
Published Date 1979-03-05
Publication Title Memoirs of the School of Engineering, Okayama University
Volume volume13
Content Type Departmental Bulletin Paper
Author Himei Toyoji| Fujitsuka Takeshi| Inoue Jyunichi|
Published Date 1969-09-01
Publication Title Memoirs of the School of Engineering, Okayama University
Volume volume4
Issue issue1
Content Type Departmental Bulletin Paper
JaLCDOI 10.18926/15621
FullText URL Mem_Sch_Eng_OU_3_137.pdf
Author Himei Toyoji| Fujitsuka Takeshi| Inoue Jyunichi| Komatsubara Hitoshi| Kadowaki Masahiko|
Abstract The measurement of the dissipated energy in switching-off has been attempted to make clear the function of spark on electric contacts, which may unfortunately cause the combustible gas, such as propane gas etc, to catch fire and result in fire accidents. By utilizing the "Memoriscope" has been the meaurement carried out and the feature of this method is to provide the information on not only the amount of dissipated energy involved in one action but also on the trace of its instantaneous power which can affect catching fire delicately. Presented in this paper are the discussion of this measuring method and the measured results which are obtained experimentally in order to investigate the dependence of the energy dissipation on variety of contacts, contacts' deterioration and circuit arrangements.
Publication Title Memoirs of the School of Engineering, Okayama University
Published Date 1968-09-01
Volume volume3
Issue issue1
Start Page 137
End Page 142
ISSN 0475-0071
language 英語
File Version publisher
NAID 120002307412
JaLCDOI 10.18926/15620
FullText URL Mem_Sch_Eng_OU_3_131.pdf
Author Himei Toyoji| Fujitsuka Takeshi| Inoue Jyunichi| Wakabayashi Jiro|
Abstract The a-c voltage control circuit, composed of parallel connection of a SCR and a reactor, gives the similar performance as the control circuit of a back to back SCR pair. However, the control characteristics of this circuit is affected by magnetizing characteristics of reactor. In this paper, the circuit with the resistive load has been analyzed by using the approximated models of hysteresis loop of core materials, where the SCR's forward voltage drop is taken into account. The results of the analysis have revealed the facts as follows, I) The control characteristics of the a-c voltage in average value is independent on the magnetizing characteristics of reactors except in the vicinity of minimum output point. But, in effective value, it is not valid. 2) A SCR's forward voltage drop results in the reduction of not only SCR's current but also reactor's current. 3) The a-c output current does not include the d-c component, if the winding resistance of the reactor is negligible.
Publication Title Memoirs of the School of Engineering, Okayama University
Published Date 1968-09-01
Volume volume3
Issue issue1
Start Page 131
End Page 136
ISSN 0475-0071
language 英語
File Version publisher
NAID 120002307481