Title:
EXCESSIVE INPUT PREVENTIVE CIRCUIT
Document Type and Number:
Japanese Patent JP2522177
Kind Code:
B2
Abstract:
PURPOSE: To constitute an energizing means in a simple mechanism by interlocking a magnetic substance and a contact plate with each other, enable downsizing and weight reduction, dispense with electric power supply, and enhance reliability by enabling a contact point circuit to close in a superconducting condition, and enabling it to open in a normal conducting condition.
CONSTITUTION: A superconducting microstrip line 1 is put in a superconducting condition or a normal conducting condition when high frequency electric power is not more than or not less than a certain electric power value. In the superconducting condition, due to a Meisner effect, a magnetic substance 3 is moved and energized in the direction for separating from the line 1, and a holder 4 is moved upward against energizing force of a spring 6, and a contact plate 5 is brought into contact with conductor bars 8 and 8', and a contact point circuit is closed. On the other hand, in the normal conducting condition, force acting on the magnetic substance 3 is extinguished, and the contact point circuit is opened, and excessive high frequency electric power which is supplied to the line 1 and is not less than a certain electric power value is prevented from being supplied to a circuit element. Thereby, an energizing means can be constituted in a simple mechanism by interlocking the magnetic substance and the contact plate with each other, and electric power supply can be dispensed with, and reliability of an excessive input preventive circuit can be improved.
Inventors:
SUZUKI SHINJI
Application Number:
JP20473393A
Publication Date:
August 07, 1996
Filing Date:
July 27, 1993
Export Citation:
Assignee:
NIPPON ELECTRIC CO
International Classes:
H01H36/00; H01L39/22; H01P1/12; (IPC1-7): H01H36/00; H01L39/22
Domestic Patent References:
| JP6410537A | ||||
| JP1119142U |
Attorney, Agent or Firm:
Hachiman Yoshihiro