81results about How to "Improve switch reliability" patented technology

At the starting time and an overload time in which the output voltage of the switching power source apparatus is low, if an overcurrent state, in which the ON period of the switching device becomes short and a current not less than the current limit value of the switching device flows through the switching device, occurs, this overcurrent state is detected. The blanking period of a blanking pulse signal is made shorter than the blanking period that is obtained during steady operation, and the ON period of the switching device is made shorter. Hence, the device current flowing through the switching device can be made small in each pulse for the switching operation, and, at the same time, the device current is suppressed from increasing each time a pulse for the switching operation is generated.

A flashlight includes a light emitting diode, power source, momentary contact switch for manually activating the flashlight, and a split-ring clip for attachment to key-rings, baggage, and various articles of clothing. The flashlight body includes an interchangeable bottom wall, suitable for engraving, printing, silk screening, or stamping.

A switching device which can be small-sized by improving a shielding performance and can improve the reliability of switching characteristics. A permanent magnet disposed near stationary contacts is arranged in its pole-face perpendicularly of the axis of a moving contact member.

A flashlight includes a light emitting diode, power source, momentary contact switch for activating the flashlight, and a split-ring clip for attachment to key-rings, baggage, and various articles of clothing. The momentary contact switch may be activated manually or when the flashlight is selectively inserted into a carrier that releasably retains the flashlight on an article of clothing or other support.

A pyrotechnic switching device comprising a first and a second pyrotechnic initiators, and a body in which are present: an electrically conductive portion, and a mobile switching element having an insulating relief facing the conductive portion. The device also comprises a fuse element connected in series with the conductive portion, the first initiator being connected to the terminals of the fuse element so that tripping the fuse element actuates the first initiator, each initiator being configured to cause the device to switch from a current conducting configuration to a current interrupting configuration, the mobile switching element being set in motion toward the conductive portion in order to break it by the impact of the relief during switching from the first to the second configuration.

A passive rebound switch includes an actuation button, an energy collecting module, a detection control, a housing, a power generation module, and a signal transmission circuit. The actuation button is detachably and pivotally connected to the housing. The power generation device, the signal transmission circuit, and the detection control are accommodated in an receiving chamber formed between the actuation button and the housing. When the actuation button is actuated to move in reciprocated rebounding movement, the energy collecting module is actuated to trigger the power generation module for converting mechanical energy into electrical energy to power the signal transmission circuit for transmitting a control signal. The energy collecting module is disposed between the actuation button and the power generation module. The detection switch pre-activates an I/O interface of an encoder device of the signal transmission circuit prior to the power generation module for generating the electrical power.

The invention describes a method of actuating a switch (S) between a device (Di) to be controlled and a power supply (P), which method comprises the steps of generating a first electrical signal (14) in a remote control unit (10) and converting the first electrical signal (14) into electromagnetic radiation (EM) by means of a first transmitting antenna (Ti) of the remote control unit (10). A first detecting antenna (Ri) of a remote control interface module (20) of the device (Di) to be controlled detects the electromagnetic radiation (EM) to obtain a second electrical signal (24), which is passively converted into a switch actuating signal (25). The switch actuating signal (25) is actuated to switch the device (Di) to be controlled between an operating mode in which current is drawn from the power supply (P) by the device (Di) during operation, and an inactive mode in which the device (Di) is completely disconnected from the power supply (P) so that no current is drawn by the device (Di). The invention further describes a system (1) for actuating a switch (S) between a device (Di) to be controlled and a power supply (P). The invention also describes a remote control interface module (20) and a remote control unit (10).

An apparatus for controlling an inverter circuit of an induction heat cooker which generates and outputs high voltage power to cook food contained in a cooking container is disclosed. The apparatus varies a pulse width of high level interval of a driving pulse according to a level of AC power supplied thereto to vary a switch current of the inverter circuit, and sufficiently secures a turn off time of the driving pulse in proportion to a resonant time varying according to states of separation of the cooking container or the heated food. Therefore, the apparatus improves stability of the switching operation and endurance. Also the apparatus requires relatively low manufacturing costs as the trigger generation is implemented with relatively low-priced amplifiers.

A pilot-operated pressure shut-off valve having a main control piston which, when an upper system limit pressure in the hydraulic system is reached, connects an inlet, via which pressure medium can be fed to a hydraulic system, to an outlet by taking up a first switching position and, when a lower system limit pressure is reached, separates from the outlet by taking up a second switching position. The pressure shut-off valve has a pilot valve arrangement by which the fluidic connection of a control space adjacent to the main control piston can be changed in order to control the main control piston, and which has a valve housing, with a first pilot piston and a second pilot piston accommodated within the first pilot piston for compact construction and capability to adjust the two pilot pistons mechanically completely independently of each other.

An apparatus for supplying a high voltage to a plurality of developer units has a high voltage source generating the high voltage, and a voltage switching unit including a plurality of switching elements provided between the plurality of developer units and the high voltage source to sequentially supply the voltage from the high voltage source to the plurality of developer units. The high voltage source supplies one voltage of a predetermined voltage level to the respective switching elements. The voltage switching unit has a plurality of high voltage distributing portions branching the voltage supplied to the switching elements into one or more voltages of differing voltage levels, and supplying the branch voltages and the initially supplied voltage to the respective developer units. A number of wiring harnesses or patterned connection lines, and contact-points and noise from the high voltage are reduced.

The invention belongs to the technical field of aircraft structure design and particularly relates to an aircraft freight cabin door positioning and guiding structure. The structure comprises a cabin door (1), a sliding rail assembly (2) and an uplatch (3). The cabin door (1) is hinged to an aircraft body, the sliding rail assembly (2) is mounted on the aircraft body and the cabin door (1), and the uplatch (3) is mounted on the aircraft body and the cabin door (1). According to the structure, stable and reliable positioning and guiding of the aircraft freight cabin door are achieved.

A switch mechanism of a detection sensor unmounted type has a configuration in which an attaching surface for a case body for containing a movable member moved in conjunction with a button operation and a mounting surface for a detection sensor operative to electrically detect a change in the position of the movable member attendant on the button operation are different, and a magnifying mechanism operative to magnifyingly transmit the change in the position of the movable member attendant on the button operation is mounted in the switch mechanism.

In a latch with a switch, when a movable member is pushed into a housing against a force of a coil spring, the movable member is locked in a pushed-in position by a lock mechanism and a switch is turned on. When the movable member is pushed again into the housing, the movable member is returned to a protruding position and the switch is turned off. The switch is formed of a pin attached to the movable member and having both ends protruding from two opposite sides of the movable member; and a pair of fixed terminals fixed inside the housing. When the movable member is at the protruding position, both ends of the pin become a conducting state, and when the movable member is at the pushed-in position, both ends of the pin become a non-conducting state. The conducting and non-conducting states can be reversed.

An object of the invention is to provide a vacuum switch which can achieve a reduction of an electric loss and an improvement of a heat transmission performance by preventing an air gap portion from being generated between an electrode and a conductor rod and preventing the electrode and the conductor rod from generating any positional displacement. An electrode for a switch in accordance with the invention is provided with the conductor rod, a contact point electrode inserted to the conductor rod, and a coupling plate fixing both the elements to an outer side in a diametrical direction of the conductor rod and the contact point electrode, thereby fixing both the elements.

The present invention discloses an optical line transmission protection system and method, wherein the optical line transmission protection system comprises at least one grade optical line protection segment comprising a transmitting end and a receiving end. The transmitting end is provided with an optical power distribution adjustment module, the receiving end is provided with an optical switch, the transmitting end of optical line protection at a home terminal and the receiving end of the optical line protection at an opposite terminal are connected to form a main optical line and a preparative optical line, the optical power distribution adjustment module is used for setting the splitting ratio of the main optical line and the preparative optical line according to the optical fiber state difference of the current working channel and nonworking channel, and the optical power distribution of the transmitting end corresponding to the main optical line and the preparative optical line can be adjusted according to the splitting ratio of the main optical line and the preparative optical line. The embodiments of the present invention enable the handshaking process to be simplified, the switching reliability to be increased and the switching time to be reduced.

A four-wheel-drive vehicle includes a driving source, main driving wheels, auxiliary driving wheels, a power transmitting member, a first mesh clutch, and a second mesh clutch. Meshing teeth on the driving source side of the first mesh clutch each have, along an entire tooth width thereof, an inclined surface in which a length in a rotational axis direction increases in a direction in which the meshing teeth on the driving source side rotate when the four-wheel-drive vehicle is traveling forward. The meshing teeth on the power transmitting member side of the first mesh clutch each have, along an entire tooth width thereof, an inclined surface in which a length in a rotational axis direction decreases in a direction in which the meshing teeth on the driving source side rotate when the four-wheel-drive vehicle is traveling forward.

A redundant power transfer apparatus provides an uninterrupted power transfer for a rear-stage circuit. The redundant power transfer apparatus includes a main loop switch coupled to a main power source, a standby loop switch coupled to a standby power source, and a control unit. The control unit controls the redundant power transfer apparatus to make the main power source or the standby power source supply power to the rear-stage circuit.