Junya SEKIKAWA


Position and Shape of Break Arcs Driven by Transverse Magnetic Field
Tomoaki SASAKI  Junya SEKIKAWA  Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2012/09/01
Vol. E95-C  No. 9  pp. 1527-1530
Type of Manuscript: BRIEF PAPER
Category: 
Keyword: 
break arcmagnetexternal magnetic field48 Velectrical contact
  Summary |  Full Text:PDF (850.9KB)

Effects of Shapes of Contact Surfaces on Break Arcs Occurring between Electrical Contacts in Which a Magnet is Embedded
Naoya TAKESHITA  Junya SEKIKAWA  Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2012/09/01
Vol. E95-C  No. 9  pp. 1522-1526
Type of Manuscript: Special Section PAPER (Special Section on Recent Development of Electro-Mechanical Devices - Papers selected from International Session on Electro-Mechanical Devices 2011 (IS-EMD2011) and other recent research results -)
Category: 
Keyword: 
electrical contactsrelaycontact erosionpermanent magnethigh-speed camera
  Summary |  Full Text:PDF (960.3KB)

Arc Duration of Break Arcs Magnetically Blown-Out in a DC 450 V Resistive Circuit
Hitoshi ONO  Junya SEKIKAWA  Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2012/09/01
Vol. E95-C  No. 9  pp. 1515-1521
Type of Manuscript: Special Section PAPER (Special Section on Recent Development of Electro-Mechanical Devices - Papers selected from International Session on Electro-Mechanical Devices 2011 (IS-EMD2011) and other recent research results -)
Category: 
Keyword: 
arc dischargepermanent magnetelectrical contacttransverse magnetic fieldhigh-speed camera
  Summary |  Full Text:PDF (1.1MB)

Break Arcs Driven by Transverse Magnetic Field in a DC48 V/6-24 A Resistive Circuit
Toru SUGIURA  Junya SEKIKAWA  Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2011/09/01
Vol. E94-C  No. 9  pp. 1381-1387
Type of Manuscript: Special Section PAPER (Special Section on Recent Development of Electro-Mechanical Devices – Papers selected from International Session on Electro-Mechanical Devices (IS-EMD2010) and other research results –)
Category: 
Keyword: 
break arcsexternal magnetic fieldseparating speedarc duration
  Summary |  Full Text:PDF (1.7MB)

Arc Duration and Rotational Frequency of Break Arcs Driven by Radial Magnet Field in a DC42 V Resistive Circuit
Naoya TAKESHITA  Junya SEKIKAWA  Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2011/09/01
Vol. E94-C  No. 9  pp. 1388-1394
Type of Manuscript: Special Section PAPER (Special Section on Recent Development of Electro-Mechanical Devices – Papers selected from International Session on Electro-Mechanical Devices (IS-EMD2010) and other research results –)
Category: 
Keyword: 
electrical contactsrelaycontact erosionpermanent magnethigh-speed camera
  Summary |  Full Text:PDF (1.5MB)

Characteristics of Break Arcs Driven by Transverse Magnetic Field in a DC High-Voltage Resistive Circuit
Tomohiro ATSUMI  Junya SEKIKAWA  Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2010/09/01
Vol. E93-C  No. 9  pp. 1393-1398
Type of Manuscript: Special Section PAPER (Special Section on Recent Development of Electro-Mechanical Devices (Selected Papers from IS-EMD2009))
Category: 
Keyword: 
break arcelectrical contactmagnethigh-speed camera
  Summary |  Full Text:PDF (486.3KB)

Effect of Contact Materials of Ag/SnO2 and Ag/ZnO on Rotational Motion of Break Arcs Driven by Radial Magnetic Field
Junya SEKIKAWA  Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2010/09/01
Vol. E93-C  No. 9  pp. 1387-1392
Type of Manuscript: Special Section PAPER (Special Section on Recent Development of Electro-Mechanical Devices (Selected Papers from IS-EMD2009))
Category: 
Keyword: 
break arcpermanent magnetarc dischargeelectrical contacts
  Summary |  Full Text:PDF (1.6MB)

Rotational Motion of Break Arcs Driven by Radial Magnetic Field in a DC Resistive Circuit
Junya SEKIKAWA  Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2009/08/01
Vol. E92-C  No. 8  pp. 992-997
Type of Manuscript: Special Section PAPER (Special Section on Recent Development of Electro-Mechanical Devices (IS-EMD2008))
Category: Arc Discharge & Contact Phenomena
Keyword: 
break arcmagnetic drivehigh-speed cameraelectrical contacts
  Summary |  Full Text:PDF (917.1KB)

Motion of Break Arcs Driven by External Magnetic Field in a DC42 V Resistive Circuit
Junya SEKIKAWA  Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2008/08/01
Vol. E91-C  No. 8  pp. 1255-1260
Type of Manuscript: Special Section PAPER (Special Section on Recent Development of Electromechanical Devices(Selected Papers from IS-EMD2007))
Category: Arc Discharge & Related Phenomena
Keyword: 
arc dischargebreak archigh-speed cameramagnetelectrical contact
  Summary |  Full Text:PDF (423.9KB)

Time-Resolved Spectroscopic Temperature Measurement of Break Arcs in a D.C.42 V Resistive Circuit
Junya SEKIKAWA  Naoki MORIYAMA  Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2008/08/01
Vol. E91-C  No. 8  pp. 1268-1272
Type of Manuscript: Special Section PAPER (Special Section on Recent Development of Electromechanical Devices(Selected Papers from IS-EMD2007))
Category: Arc Discharge & Related Phenomena
Keyword: 
break arcarc temperaturespectroscopic measurementspectral intensity
  Summary |  Full Text:PDF (559.6KB)

Relationship between Arc Duration and Motion of Arc Spots for Break Arcs of Ag and Ag/ZnO Electrical Contacts
Junya SEKIKAWA  Takumi SUGIO  Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2008/08/01
Vol. E91-C  No. 8  pp. 1249-1254
Type of Manuscript: Special Section PAPER (Special Section on Recent Development of Electromechanical Devices(Selected Papers from IS-EMD2007))
Category: Arc Discharge & Related Phenomena
Keyword: 
arc dischargeelectrical contactbreak archigh-speed cameraAg/ZnO
  Summary |  Full Text:PDF (458.2KB)

Dependence of Motion of Breaking Arc on Contact Separating Speed for Ag and Pd Contact Pairs in a DC42V Resistive Circuit
Yoshinobu NAKAMURA  Junya SEKIKAWA  Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2007/07/01
Vol. E90-C  No. 7  pp. 1361-1368
Type of Manuscript: Special Section PAPER (Special Section on Recent Development of Electromechanical Devices (Selected Papers from ICEC2006))
Category: Arc Discharge & Related Phenomena
Keyword: 
electrical contactarc spotbreaking arcseparating speedhigh-speed video camera
  Summary |  Full Text:PDF (1014.3KB)

Optical Observation of Arc Discharges between Electrical Contacts Breaking at Low Speed in DC42 V Resistive Circuit
Junya SEKIKAWA  Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2006/08/01
Vol. E89-C  No. 8  pp. 1147-1152
Type of Manuscript: Special Section PAPER (Special Section on Recent Development of Electromechanical Devices (Selected Papers from IS-EMD2005))
Category: Arc Discharge & Related Phenomena
Keyword: 
arc dischargeelectrical contactbreaking archigh-speed cameracurrent density
  Summary |  Full Text:PDF (865.7KB)

Spectroscopic Temperature Measurement of Breaking Arcs Near Cathode and Anode Surfaces of Copper Contacts
Naoki MORIYAMA  Junya SEKIKAWA  Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2006/08/01
Vol. E89-C  No. 8  pp. 1141-1146
Type of Manuscript: Special Section PAPER (Special Section on Recent Development of Electromechanical Devices (Selected Papers from IS-EMD2005))
Category: Arc Discharge & Related Phenomena
Keyword: 
breaking arcarc temperaturespectral intensityBoltzmann plot
  Summary |  Full Text:PDF (633.6KB)

Observation of Pips Formed on Ag/SnO2 Contacts in DC14 V-21 A Resistive Circuit
Yutaka NAITO  Tomoya ITO  Ryo YAMAZAKI  Junya SEKIKAWA  Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2005/08/01
Vol. E88-C  No. 8  pp. 1664-1669
Type of Manuscript: Special Section PAPER (Special Section on Recent Development of Electro-Mechanical Devices--Selected Papers from International Session on Electro-Mechanical Devices 2004 (IS-EMD2004)--)
Category: Automotive Application
Keyword: 
Ag/SnO212 wt%electrical contactstransferred pippip shapesticking
  Summary |  Full Text:PDF (1.9MB)

Cathode and Anode Bright-Spot Behaviors of Breaking Arc between Electrical Contacts with Low Separating Speed
Takayoshi ENDO  Junya SEKIKAWA  Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2005/08/01
Vol. E88-C  No. 8  pp. 1596-1602
Type of Manuscript: Special Section PAPER (Special Section on Recent Development of Electro-Mechanical Devices--Selected Papers from International Session on Electro-Mechanical Devices 2004 (IS-EMD2004)--)
Category: Arc Discharge & Related Phenomena
Keyword: 
arc dischargebright spotelectrical contactbreaking archigh-speed camera
  Summary |  Full Text:PDF (2.4MB)

Observations of the Eroded Surfaces and the Motion of Arc Spots at Each Breaking Operation of Silver Electrical Contacts
Junya SEKIKAWA  Tetsuya KITAJIMA  Takayoshi ENDO  Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2005/08/01
Vol. E88-C  No. 8  pp. 1590-1595
Type of Manuscript: Special Section PAPER (Special Section on Recent Development of Electro-Mechanical Devices--Selected Papers from International Session on Electro-Mechanical Devices 2004 (IS-EMD2004)--)
Category: Arc Discharge & Related Phenomena
Keyword: 
arc dischargeelectrical contactbreaking archigh-speed cameramicroscope
  Summary |  Full Text:PDF (1.7MB)

Growth of Transferred Pip and Electrical Properties of AgCdO Make-Only Contacts in Resistive Circuit with DC 14 V and 42 V Power Supply
Tomoya ITO  Ryo YAMAZAKI  Yutaka NAITO  Junya SEKIKAWA  Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2005/08/01
Vol. E88-C  No. 8  pp. 1670-1674
Type of Manuscript: Special Section PAPER (Special Section on Recent Development of Electro-Mechanical Devices--Selected Papers from International Session on Electro-Mechanical Devices 2004 (IS-EMD2004)--)
Category: Automotive Application
Keyword: 
electrical contactstransferred piparc discharge
  Summary |  Full Text:PDF (2MB)

An Experimental Equation for Dependence of Duration of Breaking Arcs on Supply Voltage with Constant Circuit Resistance
Junya SEKIKAWA  Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2005/08/01
Vol. E88-C  No. 8  pp. 1584-1589
Type of Manuscript: Special Section PAPER (Special Section on Recent Development of Electro-Mechanical Devices--Selected Papers from International Session on Electro-Mechanical Devices 2004 (IS-EMD2004)--)
Category: Arc Discharge & Related Phenomena
Keyword: 
electrical contactarc dischargebreaking arcarc durationexperimental equation
  Summary |  Full Text:PDF (970KB)

Research on Cathode Root Properties in Carbon Vacuum Arc
Daisuke SAKAI  Yoshiharu SAITO  Junya SEKIKAWA  Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2004/08/01
Vol. E87-C  No. 8  pp. 1356-1360
Type of Manuscript: Special Section PAPER (Special Section on IS-EMD2003--Recent Technical Trend of Electro-Mechanical Devices)
Category: Arc Discharge
Keyword: 
vacuum arc dischargecathode arc rootgraphite electrodeevaporation rate
  Summary |  Full Text:PDF (817KB)

Temperature Measurements of Breaking Arc between Copper Contacts at Three Constant Speeds (10, 20 and 30 mm/s)
Tetsuya KITAJIMA  Junya SEKIKAWA  Mitsuru TAKEUCHI  Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2004/08/01
Vol. E87-C  No. 8  pp. 1361-1366
Type of Manuscript: Special Section PAPER (Special Section on IS-EMD2003--Recent Technical Trend of Electro-Mechanical Devices)
Category: Arc Discharge
Keyword: 
breaking arcspectrum intensityarc temperatureopening speedarc durationgap length
  Summary |  Full Text:PDF (1.1MB)

Observation of Breaking Arcs of Ag or Cu Electrical Contact Pairs with a High-Speed Camera
Junya SEKIKAWA  Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2004/08/01
Vol. E87-C  No. 8  pp. 1342-1347
Type of Manuscript: Special Section PAPER (Special Section on IS-EMD2003--Recent Technical Trend of Electro-Mechanical Devices)
Category: Arc Discharge
Keyword: 
arc dischargeelectrical contactbreaking archigh-speed camera
  Summary |  Full Text:PDF (1.9MB)

Relationship between Growth of Transferred Pip and Arc Duration at Electrical Contacts Mounted on Relays
Takatsugu NAKAYAMA  Junya SEKIKAWA  Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2003/06/01
Vol. E86-C  No. 6  pp. 939-944
Type of Manuscript: Special Section PAPER (Special Issue on Recent Development of Electro-Mechanical Devices (IS-EMD 2002))
Category: Discharges & Related Phenomena
Keyword: 
electrical contactstransferred pipbouncesarc dischargerelays
  Summary |  Full Text:PDF (942.2KB)

An Experimental Equation of V-I Characteristics of Breaking Arc for Ag, Au, Cu and Ni Electrical Contacts
Junya SEKIKAWA  Takayoshi KUBONO 
Publication:   IEICE TRANSACTIONS on Electronics
Publication Date: 2003/06/01
Vol. E86-C  No. 6  pp. 926-931
Type of Manuscript: Special Section PAPER (Special Issue on Recent Development of Electro-Mechanical Devices (IS-EMD 2002))
Category: Discharges & Related Phenomena
Keyword: 
arc dischargeV-I characteristicsexperimental equationbreaking arc
  Summary |  Full Text:PDF (1.1MB)