33results about "Switches with movable transmission contacts" patented technology

A circuit is used for preventing a computer from being powered up before a CPU voltage of the computer is prepared properly. The circuit includes a power supply for providing power to the computer, a power button for powering on the computer system, a power controller, and a switch. The power controller includes an input terminal connected to the power button and an output terminal for electrical connection to the power supply. The input terminal receives a PWRBT# signal when the power button is momentarily triggered, and the output terminal outputs a PSON# signal to the power supply to control the power supply to provide the electrical power to the computer in response to the received PWRBT# signal. The switch is serially connected between the output terminal and the power supply. The switch includes a control terminal monitoring if the CPU voltage is prepared properly so as to control conduction of the switch and further to control connection between the output terminal and the power supply.

Field-device electronics including an electric current adjuster, through which a supply current flows. The electric current adjuster adjusts and/or modulates the supply current. The supply current is driven by a supply voltage provided by the external energy supply. Additionally, the field-device electronics has an internal operating and evaluating circuit for controlling the field device, as well as an internal supply circuit lying at a field-device electronics, internal input voltage derived from the supply voltage and feeding the internal operating and evaluating circuit. Provided in the supply circuit is a useful-voltage controller flowed-through, at least at times, by a first component of the supply current. The useful-voltage controller provides in the field-device electronics a first internal, useful voltage controlled to be essentially constant at a predetermined, first voltage level. Moreover, the supply circuit has a second useful-voltage controller flowed through, at least at times, by a second current component of the supply current. The second voltage controller provides in the field-device electronics a second internal, useful voltage, which is variable over a predetermined voltage range. Also contained in the supply circuit is a voltage adjuster flowed-through, at least at times, by a third current component of the supply current. The voltage adjuster serves to set and maintain the internal input voltage of the field-device electronics at a predetermined voltage level. In accordance with the invention, the operating and evaluating circuit is flowed-through, at least at times, both by a first useful current driven by the first useful voltage, and by a second useful current driven by the second useful voltage.

The present invention relates to an energy storage disconnecting switch used in extra-high voltage and ultra-high voltage grid, in particular, relates to a scissor-type disconnecting switch. With the principle of storing energy in spring, the present invention provides an energy storage spring case having energy storage spring therein, to release the spring energy to operate the disconnecting switch by using the stored energy, to satisfy the need for quick action of the electric disconnecting switch.

According to the invention, a controlled or synchronous switching of an electrical power breaker (1) can be guaranteed by means of predicting a future voltage and/or current curve from actual voltage and/or current data in an electrical energy network (5). The prediction of the future voltage and/or current curve is carried out using the voltage and/or current data determined in the electrical network (5) at different timepoints by application of a Prony method to the available voltage and/or current data.

Conductive segments (transmission line conductors) are positioned within a transmission line structure in order to generate multi-cycle microwave pulses. The conductor segments are switchably coupled to one or the other conductor of the transmission lines, inside the transmission line structure. Microwave pulses may be induced in the transmission line by closing the switches in a controlled manner to discharge successive segments, or successive groups of segments, into the transmission lines. The induced pulses travel uninterrupted along the transmission lines in a desired direction to the load. Efficiency of systems and energy delivered to the load in multi-section transmission lines is increased and/or maximized by adjusting the ratio of characteristic impedances associated with the transmission line conductor segments according to an optimum ratio.

A disconnector (100) and a method for manufacturing the disconnector (100) are disclosed. The disconnector (100) includes conductive arms (110) pivotally coupled with each other, and finger contacts (111). The finger contacts (111) have two opposite ends (115, 116) and an elastic portion (113) between the two opposite ends (115, 116), each of the finger contacts (111) being fixed to the respectiveconductive arm (110) by fasteners (112) at the two opposite ends (115, 116) such that the elastic portion (113) presses against the conductive arm (110). In response to the conductive arms (110) being pivoted toward each other and clamping an electrical contact (200) hanged at a bus-bar above the disconnector (100), the conductive arms (110) are electrically coupled with the electrical contact (200) via the respective finger contacts (111). The disconnector (100) according to the disclosure provides outstanding contact performances while the material costs as well as manufacturing and assembly costs are relatively low.

A semi-pantograph disconnector, comprising - a base (11), which supports a motor kinematic system (12), - an arm (13), which has a shoe (14) for gripping a dropper (15) and is hinged to the base (11) so as to be able to oscillate in order to pass reversibly from a disconnection configuration, in which the arm (13) is collapsed onto the base (11), to a contact configuration, in which the arm (13) is divaricated from the base (11) so as to connect by means of the shoe (14) to the dropper (15), - a rod (16), which is functionally connected to the shoe (14) in order to actuate it, - a cam device (17) for actuating the rod (16), which coordinates kinematically the opening of the shoe (14) and a first rotation of the arm (13) from the disconnection configuration to the contact configuration, - a semi-pantograph device (18), which is functionally connected to the rod (16), to the arm (13) and to the motor kinematic system (12), defining a kinematic sequence for closing the shoe (14), after the first rotation of the arm (13), and a kinematic sequence for opening the shoe (14), which is preliminary to a second rotation of the arm (13) which moves it from the contact configuration to the disconnection configuration.

An outdoor switching device has an outdoor switching path and a first contact piece (5) and a second contact piece (6). The first contact piece (5) is moveable relative to the second switching contact piece (6) by means of a drive arrangement (3). The first contact piece (5) is arranged on a pivoting arm (3b) of the drive arrangement (3). The pivoting arm (3b) is mounted on a hoist gear (3a).

The invention relates to a contact arm (2) for a pantograph disconnector (1) and to the use of said contact arm, said contact arm comprising at least one profiled body (5) and at least one contact element (6). The at least one profiled body (5) is rod-shaped, and the at least one contact element (6) is bar-shaped, having a T profile. The method for using the contact arm (2) comprises that, in the switched-on state of the current path of the pantograph disconnector (1), the T-shaped contact element (6) of the movable contact arm (2), fastened to the profiled body (5) of the contact arm (2), is electrically and mechanically in contact with a fixed contact (19), in particular with a fixed contact (19) in the form of a round bar.