447 results about "Electrical protection" patented technology

The present invention relates to a package for semiconductor device and the fabrication method for integrally encapsulating a whole semiconductor chip within a molding compound. In the semicondcutor device package, bonding pads distributed on the top of the chip are redistributed into an array of redistributed bonding pads located in an dielectric layer by utilizing the redistribution technique. The electrodes or signal terminals on the top of the semiconductor chip are connected to an electrode metal segment on the bottom of the chip by conductive materials filled in through holes formed in a silicon substrate of a semiconductor wafer. Furthermore, the top molding portion and the bottom molding portion seal the semiconductor chip completely, thus providing optimum mechanical and electrical protections.

The invention relates to a semiconductor device package member and a production method thereof, in particular to a package structure and a production method thereof. In the package structure, a chip is packaged integrally without any parts exposed out of package compound in the wafer-level package structure. By the redistribution technology, welding pads distributed on the top surface of the chip are redistributed as array welding points in a top insulating dielectric layer covering the chip, and by through holes formed on a silicon substrate and metal materials filled in the through holes, some electrodes or signal terminals on the top plane of the chip are connected to a bottom electrode metal layer on the bottom plane of the chip. Besides, the chip can be sealed without seams by the top package member and the bottom package member included in the wafer-level package structure, and accordingly good mechanical protection and electrical protection are formed.

A personal electrical injury protection system is provided which can be worn by electricians, construction workers, or other individuals working around or with low-voltage lines (i.e. generally less than about 600 volts). The personal electrical injury protection system has both a proximity warning component which provides a warning of potential electrical hazards upon close approach to the low-voltage power line and an electrical contact protection component which turns off the power upon actual electrical contact with the power line. The present personal electrical protection system relies on a radio frequency transmitter attached to the worker or person to be protected and a radio receiver/controller connected to the power line. The radio frequency transmitter has a low frequency generator which is used for electrical-contact protection and a high frequency generator which is used for proximity warning.

An electrical protection circuitry for a docking station base of a hand held meter and method thereof are disclosed. In the event of a short circuit at a meter interface connector, the protection circuitry removes power at the meter interface connector. Similarly, in the event of an applied voltage outside a specified operating range of the base, the protection circuitry removes power to the meter interface connector. These conditions of the electrical system of the base are monitored regardless whether the meter or the meter's battery is electrically connected to the base. The protection circuitry also provides a visual indication in the event of either the over current and under/over voltage conditions. Additionally, the base is designed to prevent liquid from pooling inside a pocket used to cradle and hold the meter in the base through the use of a drain located at the lowest point in the pocket.

An electrical distribution box for vehicles with two networks at different voltage levels, comprising centralized electronic signal and power control means, including a microprocessor and electrical protection means, arranged on printed circuit boards in a casing, electrically connected to at least one DC supply source and to parts of the vehicle, incorporating at least one voltage converter (5) inside the distribution box (1), on an independent printed circuit board (10) or in a differentiated area of a supporting plate of the control means, which board (10) or differentiated area is in a clear area of said casing, both in its upper part and in its lower part, electromagnetic screening means having been provided for the converter (5) inside the casing, and thermal dissipation means for the supporting plate of the converter (5).

An electric protective method and a device when a mechanical brake of a frequency conversion elevator fails is characterized in that an elevator controller real time monitors the displacement and the speed of an elevator car, and can immediately judge the mechanical brake of the elevator fails and the elevator slips if any unallowable displacement and certain moving speed are found to the elevator car before the elevator controller makes any direction and speed instruction. At this time, the invention can immediately send the zero-speed running signal to a frequency converter, and use the frequency converter to control the zero-speed torque moment produced by dragging a motor to brake the elevator car to stop, so as to ensure the safety of the people going in and out of the elevator car; meanwhile, gives out the alarm signal to notify the people in the elevator car to quickly leave, and then controls to close the door. In case of any irreversible failure to the mechanical brake, the invention controls the elevator car to run at lower speed in the slipping direction, until the elevator runs to an extreme position and stops. In this way, the invention can prevent severe accidents of shearing injury to people and high-speed crash because of high-speed slipping of the elevator.

The invention relates to the household electrical appliance field and particularly relates to a household electrical appliance detection protection method, an intelligent socket for household electrical appliances and a washing machine. The method comprises steps that, S10, a voltage value and a current value of a household electrical appliance are detected by a line detection device in real time, and a power is calculated according to the voltage value and the current value; S20, when the household electrical appliance starts, a power curve is drafted by a controller and is further stored, the acquire power curve is matched with a characteristic power curve stored in a database through searching, if matching succeeds, and the type of the household electrical appliance is set to be a household electrical appliance type corresponding to the characteristic curve; and S30, the intelligent socket is set to be in a corresponding work mode according to the household electrical appliance type, when the voltage value Ut, the current value It and/or a real-time power Pt are not in a preset safety scope corresponding to the set work mode, electrical protection for the household electrical appliance is carried out by the intelligent socket. Through the method, the type of the household electrical appliance can be automatically identified, and corresponding detection control strategy is adopted according to the type of the household electrical appliance.

The invention provides a chuck gripper device of a stacking robot for a complex surface. The device comprises a connecting flange, a mounting frame, a transverse adjusting mechanism, longitudinal adjusting mechanisms, an absorbing mechanism, a human-computer control interface and an electrical protection device; the transverse adjusting device is used for adjusting the width of the absorbing mechanism through a motor driving a bidirectional rotating lead screw; the longitudinal adjusting mechanisms are of a symmetric design and are respectively mounted at two sides of the bidirectional rotating lead screw to lift and lower down the absorbing mechanism; the absorbing mechanism is connected with a sponge chuck by a hinging manner, which effectively avoids the phenomenon of failure of absorbing on an uneven surface; the absorbing mechanism can be in match with the transverse and longitudinal moving mechanisms to adapt to the change on the size of materials. The device is suitably used for gripping objects with different size and surface forms and has the characteristics of being simple in structure, convenient to drive, steady and reliable, high in generality, and flexible to operate.

To provide steel for shipbuilding having excellent corrosion resistance which can be put to practical use even without applying coating and electrical protection, particularly steel for shipbuilding in which the improvement of durability to crevice corrosion can be attained, and which exhibits excellent durability even to corrosion owing to the sticking of salt caused by seawater and owing to a wetting environment, and further can exhibit excellent corrosion resistance even when applied to a petroleum based liquid fuel tank. The corrosion resistant steel for shipbuilding has a composition comprising 0.01 to 0.30% C, 0.01 to 2.0% Si, 0.01 to 2.0% Mn and 0.005 to 0.10% Al, and further comprising 0.005 to 0.50% Se, and the balance Fe with inevitable impurities.

The invention relates to a method for detecting a short circuit (16) on a line (10) of a multi-phase electrical energy supply network, in which current and voltage sampled values are recorded and a fault signal is generated if a fault evaluation performed by an electrical protection device (12a) indicates a short circuit (16) present on the line (10). In order to generate a fault signal even more quickly than before, in particular for clear faults, instantaneous reference voltage values are calculated from instantaneous current and voltage sampled values recorded before the occurrence of the short circuit (16), and instantaneous comparative voltage values are calculated from instantaneous current and voltage sampled values recorded before the occurrence of the short circuit (16) and instantaneous current and voltage sampled values recorded during the short circuit (16). Then a rectified reference voltage value is calculated from consecutive instantaneous reference voltage values, and a rectified comparative voltage value is calculated from consecutive instantaneous comparative voltage values. The fault signal is generated if the difference of the rectified comparative voltage value and the rectified reference voltage value exceeds a triggering threshold value. The invention further relates to a corresponding electrical protection device (12a).

A multifunctional charging pile for an electric car comprises a charging pile body loaded with a main control board, a charging cable, a wireless communication device and a handheld terminal. A charging socket is arranged on the charging pile body, one end of the charging cable is provided with a charging plug which is in plug connection with the charging socket, and the other end of the charging cable is provided with a charging gun connected with a charging port of the electric car. The wireless communication device is arranged on the charging pile body and electrically connected with the main control board of the charging pile, and the handheld terminal is connected with the wireless communication device in a wireless communication mode. By means of the multifunctional charging pile for the electric car, the charging pile body can be protected, multiple electric cars can be charged simultaneously, charging efficiency is improved, device cost is reduced, and floor space is saved. A round rubber protective cover arranged at the front end of the charging gun has functions of rain prevention, dust prevention and electrical protection. Functional interfaces having functions of measurement billing, charging monitoring, banking transaction and the like are integrated on the handheld terminal, so that the multifunctional charging pile for the electric car is easy, fast and convenient to operate during charging.

The invention provides a direct current offset probe card for radio frequency test. The direct current offset probe card is characterized by comprising a sectorial probe card base plate, wherein a plurality of signal circuits and grounding circuits are arranged on the probe card base plate; at least one grounding circuit is arranged in a space between the signal circuits and conducts an electrical protection function of effectively avoiding the interference of external noise with the signal circuit; a connector is arranged at leading-out terminal of the signal circuit for connecting offset signals of test equipment; one end of the signal circuit is connected with the mounting position of the connector, and the other end of the signal circuit is connected with a probe; and the back of the signal circuit is provided with a shockproof circuit. The direct current offset probe card has the advantages that: the signal circuits transmit the offset signals of the test equipment, and the grounding circuits are electrically connected to the electric potential zero point of a tester and serves as the reference data of characteristic impedance of each signal circuit; and different capacitors and resisters are arranged according to different tested devices so as to reduce the interferences between signals. The direct current offset probe card is simple in structure design and is suitable for standard production. The direct current offset probe card can reduce signal noise and circuit oscillation and improve the on-line testing quality of radio frequency.

A multilayer woven textile with improved performance characteristics is disclosed. The multilayer woven textile may include a spun yarn having conductive staple fibers and non-conductive staple fibers. The spun yarn may be woven in a multilayer weave pattern.

A protection device for a communication circuit that includes a sensor monitoring a protection device parameter and an indication module coupled to the sensor. The indication module generates an indication output as a function of the protection device parameter indicating a protection device event. The indication module receives power from an indication power source separate from the telecommunication signal. Also a method for protecting a telecommunication signal with a protection device including sensing a protection device parameter indicating a protection device event. The method also includes powering an indication module from an indication power source that is separate from the telecommunication signal. The method further includes generating an indication output from the indication module as a function of the protection device parameter indicating the protection device event.

The invention discloses an explosion-proof lithium battery power supply having two output types, and an operating method thereof. The explosion-proof lithium battery power supply comprises a power supply body and an external protection system, wherein the external protection system is composed of an intrinsically safe type dangerous mixture concentration monitoring and power supply protection system, and the power supply body comprises an explosion-proof power supply outer shell and an encapsulation module. The operating method comprises the steps that a battery module charges and discharges with the outside by means of a discharge positive electrode, a discharge negative electrode, a charge positive electrode and a charge negative electrode, and a battery management system and the intrinsically safe type dangerous mixture concentration monitoring and power supply protection system control the on-off of a controllable switching unit inside the encapsulation module, thereby realizing different output types of the lithium battery power supply. The explosion-proof lithium battery power supply and the operating method thereof have the advantages that: by adopting the explosion-proof protection method combining encapsulation protection, intrinsic safe protection and explosion-proof protection, multiple electrical protection mechanisms and a plurality of circuit isolation methods, restrictions on use of the lithium ion battery power supply in dangerous regions such as ''0'' region are effectively eliminated, and the application range of the lithium ion battery power supply is expanded.

There is provided an integration of the leakage current functions of an RCD and the voltage sensing functions of other prior art protection devices. By integrating the two capabilities into one decision making system/algorithm, and considering the circuits performance in terms of leakage current as it correlated with elevated protective earth voltages (and vice versa), an embodiment is created which is able to “look into” a protected electrical system and make much more precise and discerning decisions on electrical status and probability of unsafe events. The resultant technology attends to the outstanding issues with the prior art technologies as they stand, and provides a protection solution that covers the entire range of electrical power wiring configurations and the practical complexities of modern electrical works.