Abstract: An electric current sensor for sensing an electric current flowing through a conductor comprises a single hall element having a magnetic-flux sensitive surface, and an angle adjusting mechanism. The angle adjusting mechanism changes an angle between the magnetic-flux sensitive surface and the direction of a magnetic flux induced by the electric current flowing through the conductor. The magneto-electric conversion element outputs an electric signal in response to a magnetic flux density at the magnetic-flux sensitive surface. The electric current sensor detects the electric current flowing through the conductor based on the electric signal output from the magneto-electric conversion element whose magnetic-flux sensitive surface is oriented with respect to the magnetic flux at a selected angle.

Abstract: Terminal covers (51, 52) have terminal accommodation spaces, each of which has an opening of a predetermined shape that permits only one of battery terminals (24, 25), which is of predetermined polarity, to be fitted thereto. Each of the battery terminals (24, 25) is formed in such a manner as to have a predetermined shape enabling the battery terminal to be fitted into the corresponding terminal accommodation space.

Abstract: A fixed type current detector 20 of the present invention includes: a magnetic flux conversing fixed member 22, which is fixed along the periphery of a long conductor 21, and which converges the magnetic flux generated around the conductor 21 at the time of current sending to the conductor 21; and a magneto-electric conversion element 23, which is integrally provided to the magnetic flux conversing fixed member 22, and which detects the magnetic flux of the magnetic flux conversing fixed member 22, and in the magnetic flux conversing fixed member 22, a high permeability member 26 to converge the magnetic flux generated around the conductor 21, is laid.

Abstract: A current sensor 73 detects a current flowing through a first buss bar 11. When a current value detected by the current sensor 73 became equal to or greater than a threshold current value, a CPU 74 outputs a driving control signal to a driving circuit 77, and the driving circuit 77 operates an, ignitor 29 through a second substrate 65 and a terminal 50. Therefore, the ignitor 29 ignites, a second projection 41 is melted by heat of a heating agent 27, a compression spring 34 is expanded and a thermite case 26 jumps up. Thus, electrical connection between the thermite case 26 and the first and second buss bars 11, 19 is interrupted.

Abstract: A load driving apparatus is provided with a power source (1) applying a power supply voltage, a load circuit (8), a relay circuit (4) electrically connecting the power source (1) to the load circuit (8), a first switching device (2) driving the relay circuit (4), a second switching device (3) having one end connected to the power source (1) and another end connected to the load circuit (8), and supplying the power supply voltage to the load circuit (8), and a control unit (7) outputting a control signal to the second switching device (3) so as to supply the power supply voltage to the load circuit (8) and thereafter outputting a control signal to the first switching device (2) so as to electrically connect the relay circuit (4) to the power source (1), thereby starting driving the load circuit (8).

Abstract: A vehicle slide door power supply apparatus includes a vehicle body-side primary coil (1) and a slide door-side secondary coil (2), which are brought into proximity to each other upon closing of a slide door to effect a mutual induction operation, thereby supplying electric power from a vehicle body to the slide door, a temperature sensor (3), provided in the vicinity of a proximity fitting surface of the primary coil (1) for the secondary coil (2), and a primary coil control device (4) which is connected to the temperature sensor (3), and can stop the excitation of the primary coil (1) in accordance with the temperature of the proximity fitting surface or the temperature of its vicinity, detected by the temperature sensor (3), so as to interrupt the supply of the electric power to the slide door.

Abstract: Loads (53) in a slide door are in a stopped condition, and the charging rate of a slide door-contained battery (38) is below a predetermined value, the slide door-contained battery (38) is charged. When the charging rate of the slide door-contained battery (38) is above the predetermined value, the trickle charging is effected.

Abstract: A current detection device, a power supply system and a method for detecting electric current is disclosed as including an electric conductor 10 which has first, second and third conductor components 11, 12, 13 extending from a diverging point O in three orientations with a given angle with respect to one another, first and second magnet-electric transducer elements 21, 22 located at both sides of the first conductor component in positions equally spaced from the first conductor component and in the vicinity of the diverging point, and a calculation processor circuit responsive to a differential value between first and second electric signals produced by the first and second transducer elements for thereby detecting electric current flowing through the first conductor component.

Abstract: Terminal covers (51, 52) have terminal accommodation spaces, each of which has an opening of a predetermined shape that permits only one of battery terminals (24, 25), which is of predetermined polarity, to be fitted thereto. Each of the battery terminals (24, 25) is formed in such a manner as to have a predetermined shape enabling the battery terminal to be fitted into the corresponding terminal accommodation space. The battery body (27) has cover fitting holes (54a, 54b (55a, 55b)), which permit only fitting projection pieces (51c, 51d (52c, 52d)) of the terminal cover (51 (52)) accommodating and holding the battery terminal (24 (25)) to be fitted thereinto, in the vicinity of the battery electrode (29 (30)) so that only the battery terminal (24 (25)) is placed at a fastening/fixing position on the battery electrode (29(30)).

Abstract: A first battery 12 is for supply of power at a first voltage. A second battery 13 is for supply of power at a second voltage to a load 14. A converter 120 is between the first battery 12 and the second battery 13. The converter 120 is for conversion of power between the first voltage and the second voltage in magnitude. A controller 110 is for operation of the converter 120 in dependent on a first current in magnitude through the load 14 and a second current in magnitude at an output terminal of the second battery 13.

Abstract: A current detection switch comprising a measured conductor into which a measured current flows, a plurality of magnetoelectric devices placed sandwiching the measured conductor so as to have magneto-sensitive faces on sides to which a magneticflux generated by the measured current is input, each of the magnetoelectric devices for outputting a magnetoelectric signal when the magnetic flux exceeds a predetermined value, and a computation section for outputting a logical multiplication of the magnetoelectric signals from the plurality of magnetoelectric devices as a detection signal.

Abstract: An abnormal current in a first semiconductor switch is detected. When an abnormal current occurs, ON/OFF of the first semiconductor switch is controlled so as to generate a vibration current. The first semiconductor switch is shut off by this vibration current. A voltage between drain and source of the first semiconductor switch is compared with a voltage between drain and source of a second semiconductor switch by means of a comparator. Then, a control voltage is supplied from a driving circuit to gate terminals of the first semiconductor switch and second semiconductor switch according to a result of this comparison.