摘要:
An apparatus for limiting a current of a line or breaking a current, and a control method thereof are disclosed. The apparatus includes a current breaking branch (29) and a bridge branch. The bridge branch includes two bridge arms formed by four identical current commutation branches. Every two of the four current commutation branches are connected in series, and the formed two bridge arms are then connected in parallel. The two bridge arms are both connected in parallel to the current breaking branch, and middle points of the two bridge arms are separately connected to two ends of a line. Each current commutation branch includes at least one high-speed isolation switch (6) and at least one bidirectional power semiconductor switch (10) that are connected in series. The apparatus can turn off currents in two directions.
摘要:
An operating device performs opening and closing operations of a switch. The operating device includes a lever member that is coupled to a movable contact of the switch and biased by an energy storage spring; a tripping latch that can be engaged with the lever; a tripping trigger that can be engaged with the tripping latch; first and second electromagnets that can operate independently of each other and each of which has a plunger; and a rotating lever that can come into contact with a different portions of the plunger of the first electromagnet, the plunger of the second electromagnet, and the tripping trigger and that is rotated by being pushed by at least one of the plunger of the first electromagnet and the plunger of the second electromagnet, thereby pushing the tripping trigger.
摘要:
A switch unit (40) is mountable to a distal end of a handpiece of an electrically-activatable surgical tool, such as an ultrasonically-vibratable surgical tool. The switch unit (40) has a generally bullet-shaped outer form with an axial bore (42) through which a waveguide of the tool extends. A resiliently deformable band (1) extends around the switch unit (40) above a polygonal-section contact zone (2), such that fingertip pressure on the band (1) may locally depress the band (1) towards a flat area (12) of the contact zone (2). Switch contacts (11) are mounted to an inner surface of the band (1) opposite a plated circuit (10) located on each flat area (12) so as to form a plurality of switches. A switch to activate the tool is thus easily accessible to a user's fingertip in any orientation of the handpiece in the user's hand. The switch contacts (11) may each comprise a body having an electrical resistance dependent on a pressure exerted thereon. A magnitude of a response from the tool may thus be controlled by the pressure exerted by the user's fingertip.
摘要:
A release control sensor module for an openable member of a vehicle, such as a vehicle window, includes a first sensor and a second sensor. The first sensor is a displacement sensor that controls the closure of an electric circuit, such as a changeover switch or a reed switch. The second sensor is powered by the electric circuit. The first sensor controls the activation of the electronic circuit. If the first sensor is not actuated, the sensor module is electrically isolated and does not consume any power. If the first sensor is actuated, the second sensor is powered and can be used to detect movement of a moving part of the control, such as a pull handle or an opening lever.
摘要:
An actuating device is provided for selecting gears of an automatic transmission. The actuating device includes a rotatable actuating element as well as a crank arrangement (9) with stop elements (Mn) for limiting the rotation angle of the actuating element to a total switching angle. The actuating element may assume n switching positions within the total switching angle. The crank arrangement (9) has a separate stop element (Mn), which can be activated in a controlled manner, and a crank area (12, 13) for each of the n switching positions. The crank area (12, 13) comprises at least one crank segment (A, B, C, . . . ), between the end stops of which a stop element (Mn) can assume one of n relative positions, which correspond to the n switching positions. The crank segments (A, B, C, . . . ) are arranged distributed over the total crank angle such that all n relative positions are occupied by the n stop elements (Mn) for each relative switching position (1, 2, 3, . . . ). The actuating device makes possible, analogously to purely mechanical actuating elements with discrete locking position, the reliable actuation of complex technical systems. At the same time, intuitively detectable and especially tactile feedback, which is unambiguous under all operating conditions, is achieved for the actual state of the system.
摘要:
A release control sensor module for an openable member of a vehicle, such as a vehicle window, includes a first sensor and a second sensor. The first sensor is a displacement sensor that controls the closure of an electric circuit, such as a changeover switch or a reed switch. The second sensor is powered by the electric circuit. The first sensor controls the activation of the electronic circuit. If the first sensor is not actuated, the sensor module is electrically isolated and does not consume any power. If the first sensor is actuated, the second sensor is powered and can be used to detect movement of a moving part of the control, such as a pull handle or an opening lever.
摘要:
An electrical switch for a level detection device in a functional fluid container (12) of a motor vehicle brake system, comprises two electrically conductive terminals (32, 34) and a first reed bulb (36), forming a dipole electrically connected to the two conductive terminals (32, 34). The reed bulb (36) is capable of occupying two states, one open and one closed, each state depending on whether the situation is normal or exceptional. The switch furthermore comprises a second reed bulb (36) forming a dipole electrically connected to the two conductive terminals (32, 34), this second reed bulb (36) functioning redundantly with respect to the first reed bulb (36)
摘要:
A device for reliably generating signals, which includes a control means (10) that is supplied a control signal (12). The control means (10) generates a trigger signal (13, 14) as a function of the control signal (12), in order to trigger a load (50). Emergency operating means (30, 32) are provided, which, in an emergency operation, generate the trigger signal (34, 14) as a function of the control signal (12).
摘要:
A push-button switch and a teaching pendant employing the same are provided. The push-button switch ensures that a push button is capable of switching ON/OFF the switch if one of contacts thereof should fail during an operation of the switch. For achieving this object, a switch case 3 contains two c-contacts 9a, 9b each having a snap action configuration and switching mechanisms 11a, 11b for opening/closing the c-contacts 9a, 9b. When a push button 5 is depressed, the switching mechanisms 11a, 11b simultaneously open/close the c-contacts 9a, 9b for turning ON/OFF a push-button switch 1.
摘要:
A limit switch includes a housing, a plunger, an actuator, a prime contactor, a redundant prime contactor, an adjustment contactor, and a redundant adjustment contactor disposed within the housing. The prime contactor and adjustment contactor are electrically coupled in series. The prime and redundant prime contactors are openable by the plunger, and the adjustment and redundant adjustment contactors are closable by the plunger. The redundant adjustment contact is electrically coupled in series with the redundant prime contactor. The limit switch controls a circuit by aligning the limit switch in a mid-position alignment. Opening the prime contactor or redundant prime contactor de-energizes the electrical circuit. Closing the prime contactor and the redundant prime contactor while the adjustment contactor and the redundant adjustment contactor are maintained closed energizes the electrical circuit. Opening the adjustment contactor or redundant adjustment contactor when the actuator is misaligned from the plunger de-energizes the electrical circuit.