Title:
DRIVE CIRCUIT FOR ELECTROMAGNETIC MANIPULATION MECHANISM
Document Type and Number:
WIPO Patent Application WO/2011/125092
Kind Code:
A1
Abstract:
Provided is a drive circuit for an electromagnetic manipulation mechanism, wherein, when a switch (24) and a switch (28) are opened in advance, before closing a switch (14) to excite a closing coil (5) with a charged capacitor (11), to drive a movable core (2) to close a vacuum valve that is not indicated in the drawing, electric current will not flow through a coil (6) even when a voltage is generated thereupon by electromagnetic induction from the coil (5), and neither will there be power loss generated. Since, when a switch (18) is closed before opening the switch (14), electric current flowing through the coil (5) upon opening the switch (14) will commutate to a series circuit (19) comprising a resistor (17), the voltage to be generated on the coil (5) can be alleviated. When a switch (14) and a switch (18) are opened in advance, before closing a switch (24) to excite the opening coil (6) with a capacitor (21), to drive the movable core (2) in the opposite direction to open the vacuum valve, electric current will not flow through the coil (5) even when a voltage is generated thereupon by electromagnetic induction from the coil (6), and neither will there be power loss generated.
Inventors:
NAGAYASU, Ryo (7-3 Marunouchi 2-Chome, Chiyoda-K, Tokyo 10, 〒1008310, JP)
Application Number:
JP2010/002423
Publication Date:
October 13, 2011
Filing Date:
April 02, 2010
Export Citation:
Assignee:
Mitsubishi Electric Corporation (7-3 Marunouchi 2-Chome, Chiyoda-Ku Tokyo, 10, 〒1008310, JP)
三菱電機株式会社 (〒10 東京都千代田区丸の内二丁目７番３号 Tokyo, 〒1008310, JP)
三菱電機株式会社 (〒10 東京都千代田区丸の内二丁目７番３号 Tokyo, 〒1008310, JP)
International Classes:
H01H33/59
Attorney, Agent or Firm:
MURAKAMI, Keigo et al. (6-kai, SUN-BURST Building 1-18, Minamitsukaguchi-Cho 1-Chome, Amagasaki-Sh, Hyogo 12, 〒6610012, JP)
Claims: