Abstract:
Die Erfindung betrifft ein Verfahren zum Erzeugen eines Auslösesignals (A) für einen Gleichstromleistungsschalter (22), der zwischen eine Hochspannungsgleichstromquelle (11) und eine Hochspannungsgleichstromübertragungsleitung (24) geschaltet ist. Bei dem Verfahren wird eine an der Hochspannungsgleichstromübertragungsleitung (24) anliegende Spannung unter Gewinnung von Gleichspannungsmesswerten (Um) gemessen und ein durch die Hochspannungsgleichstromübertragungsleitung (24) fließender Strom unter Gewinnung von Gleichstrommesswerten (Im) gemessen. Durch Auswertung der Gleichspannungsmesswerte (Um) und der Gleichstrommesswerte (Im) wird ein an der Hochspannungsgleichstromübertragungsleitung vorliegender Fehler (230) erkannt wird und daraufhin das Auslösesignal (A) für den Gleichstromleistungsschalter (22) erzeugt.
Abstract:
Surgical instrument electronic subsystem 7006 comprising a short circuit protection circuit 7012 for the sensors and/or electronic components 7005. A main power supply circuit 7010 is connected to a primary circuit comprising a microprocessor and other electronic components 7008. The main power supply circuit 7010 is also connected to a short circuit protection circuit 7012. The short circuit protection circuit 7012 is coupled to a supplementary power supply circuit 7014, which supplies power to the sensors and/or electronic components 7005 via the electrical conductors 7002, 7004. To reduce damage to the processor 7008 connected to the main power supply terminals 7018, 7020, during a short circuit between the electrical conductors 7002, 7004 of the power supply terminals feeding the sensors and/or electronic components 7005, a self isolating/restoring short circuit protection circuit 7012 is provided.
Abstract:
An end effector is disclosed. The end effector comprises a first jaw member defining an anvil; a second jaw member configured to receive a cartridge therein, wherein the first jaw member is moveable with respect to the second jaw member; a first sensor coupled to the anvil; and a second sensor configured to measure a second parameter. The first sensor is configured to measure a first parameter. The first parameter and the second parameter are related. The first sensor and the second sensor are in signal communication with a processor.
Abstract:
A system for placing into a safe condition one or more solar systems "I", each system comprising a plurality of solar panels "P", which are electrically connected in series, so as to form one or more strings "S". Said system comprises at least one central unit 3, which is electrically connected to one or more strings "S" and to a power supply source 2, and comprises at least one control unit 32; at least one peripheral unit 4, which is electrically connected to at least one string "S" and to said central unit 3, and comprises a plurality of switches (43, 33), which are properly connected to one or more panels "P" comprised in said string "S". The central unit 3 is adapted, when the voltage of the power supply source 2 in interrupted, to isolate at least one of the strings "S" by interrupting the current in said string "S" and by disconnecting it opening said plurality of switches 43, so that it is galvanically isolated and presents, at its ends, at most a predetermined safety low voltage.
Abstract:
A circuit protection arrangement (11) for use in a vehicle, the arrangement (11) comprising: an input terminal (12) configured to be connected to a power supply (14) to receive a power supply voltage; an output terminal (15) configured to be connected to an electronic circuit (16) to provide an output voltage to the electronic circuit (16); a controllable switch (19) which is connected in series between the input and output terminals (12, 15); a control module (20) which is coupled to controllable switch (19); a voltage buffer module (21) coupled to the input terminal (12), the voltage buffer module (21) being configured to store electrical energy and to provide a buffer output voltage for a predetermined length of time, the buffer output voltage being substantially equal to the power supply voltage; and a detection module (27) coupled to the input terminal (12), the voltage buffer module (21) and the control module (20), the detection module (27) being configured to detect if the power supply voltage is substantially equal to the buffer output voltage and to provide: a first control signal to the control module (20) if the power supply voltage is substantially equal to the buffer output voltage, and a second control signal to the control module (20) if the power supply voltage is lower than the buffer output voltage, wherein the control module (20) is configured to control the controllable switch (19) to: switch on in response to the first control signal so that the protection arrangement (11) provides a voltage at the output terminal (15) which is substantially equal to the power supply voltage, and switch off in response to the second control signal so that the protection arrangement (11) does not provide a voltage at the output terminal (15) to protect an electronic circuit (16) connected to the output terminal (15).
Abstract:
A surgical stapling system including a shaft assembly transmits actuation motions from an actuator and an end effector compresses and staples tissue. The end effector comprises an elongated channel; an anvil having a staple forming surface is moveable relative to the elongated channel between an open position and a closed position; and a staple cartridge removably positioned within the elongated channel. The staple cartridge comprises a body having a tissue contacting surface in a confronting relationship with the staple forming surface; a plurality of staple drivers within the cartridge body each supporting a staple; and a tissue thickness compensator positionable between the anvil and the cartridge, the tissue thickness compensator is captured by the staples and assumes different compressed heights within the different staples. The tissue compensator comprises first conductive elements. The system determines properties of tissue compressed between the anvil and the cartridge.
Abstract:
A surgical instrument is disclosed. The surgical instrument includes a first jaw and a second jaw, wherein at least one of the first jaw and the second jaw is movable relative to the other one of the first jaw and the second jaw between an open configuration and an approximated configuration. In addition the surgical instrument includes a cutting member movable during a firing stroke to cut tissue captured between the first jaw and the second jaw, the cutting member comprising a cutting surface at a distal portion thereof. In addition, the surgical instrument further includes a sensing module operable to measure a characteristic of the cutting surface.
Abstract:
A system for protection a component in an integrated circuit (IC) is disclosed. The system includes a disconnect element (11) electrically connected in series between a terminal of the IC and one component (24). The disconnect element has a first state to permit an electrical signal to propagate from the terminal to the one component and a second state corresponding to a high impedance condition that electrically disconnect the terminal relative to the one component. A control system (40) causes the disconnect element to transition from the first state to the second state based on a predetermined activation condition.
Abstract:
A system for detecting low voltage in an electric appliance having multiple loads (10) associated with drive switches (20) commanded by respective electronic controls (30) which are energized from a power source (40) connected to an electric network and which are operatively coupled to a command module (50). The system comprises: a compensating load (60), connected to the power source (40) and constructed to maintain constant the relation between the voltage of the electric network and the voltage of the power source (40), regardless of the number of loads (10) being energized; a control unit (70) associated with the command module (50) and with the compensating load (60), to define the current consumption to be produced by the compensating load (60), and a voltage sensing means (S) associated with the power source (40) and with the control unit (70) to promote the de-energization of the loads (10) when the voltage of the power source (40) is lower than a predetermined minimum value.