55results about How to "Eliminate potential difference" patented technology

An electrical potential difference between a slider body and a hard disk of a hard disk drive is eliminated based on the flying-height spacing of the slider body between the slider body and the hard disk. A predetermined bias voltage is applied between the slider body and the hard disk that includes a DC component and an AC component and that is based on the detected flying-height spacing of the slider body. The flying-height spacing can be detected based a minimum slider-to-disk clearance change from a design flying height of the slider at a frequency of the AC component as the DC component of the predetermined bias voltage is varied. Alternatively, the flying-height spacing can be detected based on a minimum electrodynamic response of the slider to a first harmonic of the AC frequency of the AC component as the DC component is varied.

An electrical potential difference between a slider body and a hard disk of a hard disk drive is eliminated based on the flying-height spacing of the slider body between the slider body and the hard disk. A predetermined bias voltage is applied between the slider body and the hard disk that includes a DC component and an AC component and that is based on the detected flying-height spacing of the slider body. The flying-height spacing can be detected based a minimum slider-to-disk clearance change from a design flying height of the slider at a frequency of the AC component as the DC component of the predetermined bias voltage is varied. Alternatively, the flying-height spacing can be detected based on a minimum electrodynamic response of the slider to a first harmonic of the AC frequency of the AC component as the DC component is varied.

The invention provides an electric field fingerprint recognition device, a state control method thereof and a prosthesis identification method. The electric field fingerprint recognition device comprises a signal acquisition module and a signal processing module. When a measurement state signal processing unit is electrically connected with a signal acquisition unit, a to-be-measured state signal processing unit is at least electrically connected with at least one signal collection unit at the periphery of the measurement state signal processing unit. The charging and discharging processes of a sensing capacitor which is electrically connected to the measurement state signal processing unit and the to-be-measured state signal processing unit, and the charging and discharging quantity of electricity of a parasitic capacitor between the measurement state signal processing unit and the to-be-measured state signal processing unit is inhibited. The device and the methods have the advantages of simple structure and saving of device cost, a problem of mutual interference between signal collection units is avoided, the fingerprint recognition device can be suitable for various application requirements, a prosthesis finger fingerprint can be judged, and the safety and the reliability of the fingerprint identification device are improved.

The application discloses an impressed current catholic protection device for a ship. The device comprises a power supply unit, a reference electrode, a plurality of auxiliary anodes and an automatic grounding controller, wherein the power supply unit comprises an output unit with a plurality of output terminals and a control unit connected with the output unit; the automatic grounding controller is arranged between a propeller axis and a ship body; the auxiliary anodes are arranged on the outside of the ship body and are respectively connected with the output terminals of the output unit; the ship body is connected with the input terminals of the output unit; the reference electrode is arranged on the ship body between each two adjacent auxiliary anodes; and the control unit is used for regulating the output current of the output unit. According to the impressed current catholic protection device for the ship, the automatic ground controller arranged between propeller axis and the ship body is not only capable of detecting the potential difference between the ship body and the propeller axis, but also capable of automatically outputting proper current to remove the potential difference when detecting the potential difference and consequently keeping the potential difference between the ship body and the propeller axis close to zero.

An electrical potential difference between a slider body and a hard disk of a hard disk drive is eliminated based on the flying-height spacing of the slider body between the slider body and the hard disk. A predetermined bias voltage is applied between the slider body and the hard disk that includes a DC component and an AC component and that is based on the detected flying-height spacing of the slider body. The flying-height spacing can be detected based a minimum slider-to-disk clearance change from a design flying height of the slider at a frequency of the AC component as the DC component of the predetermined bias voltage is varied. Alternatively, the flying-height spacing can be detected based on a minimum electrodynamic response of the slider to a first harmonic of the AC frequency of the AC component as the DC component is varied.

A static resistant reticle comprises a substrate and a patterning layer and is covered by an antistatic conductive film of quaternary amine (R4N)+Cl−. A pellicle structure comprising an optically transparent membrane tightly stretched on a frame is also coated by an antistatic electro conductive film of a similar material. The reticle with the pellicle form a shielded structure isolating the reticle from ESD.

The invention provides a continuous wave power probe, comprising a microwave detection circuit A1 and a large dynamic range detection voltage processing circuit A2, wherein the microwave detection circuit A1 is positioned on a gallium arsenide substrate and sealed in a cavity, and the large dynamic range detection voltage processing circuit A2 is positioned in a printed circuit board and sealed by a metal shell. The continuous wave power probe based on MMIC technology and with the dynamic range of 90 dB, provided by the invention, is connected to a continuous wave power meter host by a cable, thus achieving that the dynamic range of the single probe with the frequency range of 10MHz-18GHz reaches 90dB, and also achieving accurate measurement of the continuous wave power.

The invention discloses a novel lead-acid storage battery with a plastic composite electrode plate, and is mainly characterized in that: a plastic lead composite plate is used as a substitute for lead grids and lead connecting pieces of the prior lead-acid storage battery; the plastic composite electrode plate is composed by a composite electrode plate, a cotton layer on the surface of the electrode plate and lead particles embedded in the composite plate. The invention has the advantages that: 1. improving the specific energy form the original 30 wh / kg to 50 wh / kg; 2. reducing the weight of the storage battery by 40 percent compared with the storage batteries with the same capacity; 3. reducing the consumption of lead with 6g for per square meter of the composite electrode plate, thereby greatly reducing the cost; 4. small inner resistance, heavy output currency, long service life; 5. connecting a dozen or more than hundreds of the same batteries to form a storage battery of dozens of volts or hundreds of volts.

The invention discloses a rigid integral dropper of overhead contact line equipment of a high-speed electrified railway, which comprises an I-shaped sleeve made of an insulating material, wherein the sleeve is provided with a through hole along the axial direction; disks at two ends of the sleeve are provided with grooves communicated with the through hole of the sleeve along the radius direction respectively, and the two grooves are positioned in a 180-degree direction; inserted blocks made of the insulating material are arranged in the two grooves respectively; a dropper line is hung on a middle section of the sleeve and is n-shaped; one end of the dropper line is fixedly connected with a clamping piece A of the dropper line; and the clamping piece A of the dropper line is fixedly connected with a clamping piece B of the dropper line. The rigid integral dropper can ensure the reserved looseness of a contact wire so that when a pantograph of a locomotive obtains current, offline phenomena cannot be generated due to an unsmooth contact wire, and simultaneously double insulation is formed between a catenary wire and the contact wire to effectively eliminate the potential difference between the catenary wire and the contact wire and prevent the electric corrosion of dropper line.

In the TSC structure, a first dielectric layer is formed over the first major surface of the substrate. The substrate includes opposing second major surfaces. A TSC is formed in the first dielectric layer and the substrate such that the TSC passes through the first dielectric layer and extends into the substrate. A conductive plate electrically coupled to the TSC is formed over the first dielectric layer. An isolation trench is formed in the substrate to surround the conductive plate and is spaced apart from the conductive plate. A second dielectric layer is formed on the second major surfaceof the substrate. A plurality of first through holes extending into the substrate and connected to the TSC are formed in the second dielectric layer. A plurality of second through holes extending intothe substrate but not connected to the TSC are formed in the second dielectric layer.

The invention belongs to the motor field and discloses a motor bearing electric corrosion-prevention structure and a plastic packaging brushless direct current motor. The motor bearing electric corrosion-prevention structure includes a rotating shaft, a first bearing installed at one end of the rotating shaft, a first bearing supporting frame which sleeves the first bearing, an electric conduction cover which is in electric conduction connection with the first bearing supporting frame, an elastic electric conduction assembly which is electrically connected between the electric conduction cover and the rotating shaft; the electric conduction cover sleeves the first bearing supporting frame; the rotating shaft is provided with an extension portion which extends out from the interior of the first bearing supporting frame and extends into the electric conduction cover; and the elastic electric conduction assembly is installed in the electric conduction cover and is elastically connected between the electric conduction cover and the extension portion. According to the motor bearing electric corrosion-prevention structure of the invention, the electric conduction cover and the elastic electric conduction assembly are adopted, so that electric conduction connection between an inner peripheral support and an outer peripheral support of the first bearing can be realized, and potential difference between the inner peripheral support and the outer peripheral support of the first bearing can be eliminated, and electric corrosion of the first bearing can be avoided, and the first bearing can have the advantages of low manufacture cost, high shock resistance and high load capacity.

The wire stripper is configured such that the wire stripper includes a signal analyzer circuit 74 that measures, for example, an impedance through stripping blades 27 and 27; in the process of stripping a coating 71 of an electric wire W, when the stripping blades 27 and 27 contact a wire core 70 of the electric wire W, a change in impedance caused by addition of the impedance of the wire core 70 to the stripping blades 27 and 27 is detected; and a buffer circuit 103 that when a contact of the stripping blades 27 and 27 to the wire core 70 is detected, applies a signal having the same level as that of the electric signal to the stripping blades 27 and 27 to the side of a shielding material 101 of a shielded cable 100 for transmitting the electric signal to the stripping blades 27 and 27 or from the stripping blades 27 and 27 so as to reduce or prevent current leakage between a signal line 73 of the shielded cable 100 and a shielding material 101 of the shielded line 100.

The invention relates to a surge protector with long service lifetime and high protection. The surge protector comprises a current output outer cylinder, wherein a zinc oxide piezoresistor substrate is arranged at an internal bottom part of the current output outer cylinder, a pressure bearing ring, a polarity cross cap and a T-shaped isolation sleeve are sequentially arranged on the piezoresistor substrate, an induction coil is wound around the pressure bearing ring in a matching way, a current transmission end of an induction coil is connected with a passive current comparison module by two groups of wiring caps, and the piezoresistor substrate, the polarity cross cap and the induction coil are pressed in the current output outer cylinder by a hole elastic baffle ring to form a whole current discharge passage. The surge protector has the advantages of reasonable structure, reliable working performance, good protection effect, long service lifetime and the like, and is convenient to operate, and the development trend for effect improvement of a current surge protector and the increasingly market demand can be satisfied very well.

The invention relates to a grounding device of a variable-frequency motor which belongs to a motor grounding device in particular. The device is characterized in that the device includes a bearing component, a carbon brush device, a brush frame cover and a rotary shaft; the rotary shaft is mounted in the brush frame cover and is supported by the bearing component; the carbon brush device is fixed on the bearing component through a bolt; the brush frame cover is fixed on the bearing component through a bolt; the carbon brush device includes a down-lead, a carbon brush frame, a bolt, black lead and a brush frame mounting plate; the carbon brush is fixed on the brush frame mounting plate through the bolt; the black lead is connected with the brush frame mounting plate; the down-lead is connected with the brush frame mounting plate through the bolt. The invention has a simple, compact and reasonable structure; the damage of a shaft circuit to the bearing and the rotary shaft can be great reduced; the service life of the motor can be prolonged, and the potential difference between the inner ring and the outer ring of the bearing can be removed.

The invention discloses a resin casting terminal busbar, which comprises a casting body, the casting body is provided with a phase-separation block group, the number of the phase-separation block groups is multiple, and the plurality of phase-separation block groups are cast on the casting body in parallel, symmetrical and equidistant The center of the inner side; the plurality of phase-separated block groups are composed of a first phase-separated block, a second phase-separated block and a third phase-separated block. The casting body of the resin casting terminal busbar is made of insulating resin, with high protection level. The first phase separation block, the second phase separation block and the third phase separation block are all molded with DMC material, which has high strength, corrosion resistance, The advantages of impact resistance, arc resistance and smoothness; the tin plating on the surface of both ends of the copper bar can eliminate the potential difference formed by the copper and aluminum joints due to the unequal number of electrons; the overall protection level is high, high strength, and arc resistance.

A communication device includes a first housing having a first substrate and a second housing having a second substrate, wherein the first substrate and the second substrate are connected by a signal wire including a plurality of thin electric wires, each of which is made of a conductor covered with an insulator, the plurality of thin electric wires forming the signal wire are tied in a bundle at a center portion except the ends thereof and covered with a ground wire mesh made of a plurality of conductive wires knitted into a mesh structure and the ends of the ground wire mesh are connected to the first substrate and the second substrate, respectively.

The invention provides a bearing structure and a motor. The bearing structure comprises a bearing outer ring (1), a bearing inner ring (2), a rolling body (3) and a conductive structure, the bearing inner ring (2) is sleeved with the bearing outer ring (1), the rolling body (3) rolls in a raceway formed by the bearing outer ring (1) and the bearing inner ring (2), and the conductive structure is arranged between the bearing outer ring (1) and the bearing inner ring (2) and conductively connects the bearing inner ring (2) and the bearing outer ring (1). According to the bearing structure, the potential difference of the bearing inner ring and the bearing outer ring can be effectively eliminated, and the electric corrosion resistance of a bearing is ensured.

The invention provides a metal wiring film, a manufacturing method thereof and a thin film transistor. The metal wiring film comprises first, second and third film layers, the first film layer is madeof nickel-copper alloy in which the mass percent of nickel is between 30% and 70%, the second film layer is positioned on the first film layer, and made of aluminum-neodymium alloy in which the masspercent of neodymium is between 1% and 5%; and the third film layer is positioned on the second film layer and made of a material the same with that of the first film layer. The metal wiring film caneliminate a potential difference therein, and is avoided from electrolytic etching.

This invention provides a light-transmitting electrically-conductive material that helps prevent decreases in yield when manufacturing touchscreens. Said light-transmitting electrically-conductive material has, on top of a support, light-transmitting sensor sections, a light-transmitting dummy section, a terminal section, a peripheral wiring section that electrically connects the sensor sections to the terminal section, and a grounding section. The peripheral wiring section contains parallel regions between adjacent peripheral wires, the grounding section contains parallel regions between adjacent grounding wires, and the minimum spacing (A) between peripheral wires in the parallel regions of the peripheral wiring section and the minimum spacing (B) between grounding wires in the parallel regions of the grounding section satisfy the relation A & gt; B.

The invention discloses a device and a method for inhibiting platinum group element particle defects in cover glass. An electric potential difference measurement device and a direct current regulated power supply are connected between two non-contacted components in a glass channel, the electric potential difference measurement device and the direct current regulated power supply are both connected to a control device, the electric potential difference between non-directly connected components in a glass channel system is measured actually through the electric potential difference measurement device, then the control device controls the direct current regulated power supply in terms of applying reverse voltages with equal magnitude and opposite directions between the components generating electric potential difference in the glass channel system to offset the originally generated electric potential difference, thus eliminating the electrochemical corrosion root of platinum / rhodium alloy in high temperature molten glass so as to reach the purpose of reducing platinum / rhodium particle defects in cover glass. The device provided by the invention has a simple structure and is convenient for use, and can effectively inhibit cover glass platinum group element particle defects caused by electrochemical corrosion.

The invention relates to the field of motor, and discloses a motor and an electrical conduction device for the motor. The electrical conduction device can be arranged between an end cover (21) and a shaft (22) of a motor (20) to electrically connect the end cover (21) and the shaft (22). The electrical conduction device includes a fixing piece (10) used for being connected with the end cover (21), and a contact piece (12) used for electrically contacting the shaft (22). The contact piece (12) is fixedly connected to the fixing piece (10) through a connecting piece (11), and can be pressed on the shaft (22). The electrical conduction device of the invention can electrically connect the inner and outer rings of motor bearings to eliminate the potential difference between the inner and outer rings of the bearings. Therefore, the problem that the bearings are damaged due to electric erosion is solved.

The invention discloses a communication joint grounding system. The communication joint grounding system comprises wireless equipment, a main distribution frame, transmission equipment, switching equipment and power equipment, wherein the wireless equipment and the main distribution frame are connected with a vertical grounding main collecting line through horizontal grounding sub-collecting lines; the vertical grounding main collecting line is connected with a grounding body through a grounding lead; the transmission equipment, the switching equipment and the power equipment are connected with the vertical grounding main collecting line; the horizontal grounding sub-collecting lines are connected with construction steel bars; an antenna is arranged on the wireless equipment. The communication joint grounding system adopts a joint grounding mode, technically enables all grounding systems in the whole building to be jointed to form a voltage balancing net with a low grounding resistance value, and has the advantages that (1) the ground potential is balanced, and the potentials of all ground wire systems in the same layer are substantially equal, and the potential difference endangering the equipment is eliminated; (2) a common ground bus establishes a reference zero-potential point globally; (3) the interference of the ground wire systems is eliminated; (4) the electromagnetic compatibility performance gets better.

The invention relates to an electric energy storage stapling machine, comprising a box which contains a control switch and a circuit, a motor, a gear group for reducing speed and increasing force, and a wheel. The last wheel of the gear group is concentric with the wheel and connected via an eccentric axle, the box contains sliding engaged staple groove and stapling device with some angle, the box contains a flexible energy storage device, a locking releaser for locking and releasing the stapling machine, the middle of the flexible energy storage device is hinged between two inner side walls of the box while its outer end is hooked on the stapling machine and inner end is directly or indirectly hinged on the eccentric axle, the circumference of the wheel is disposed with a dial block for dialing block and locking block and a dial rod for dialing the control switch. The invention has low demand on motor power, and low cost, which it can avoid destroying motor in clamped condition.

The vehicle power device includes: a wheel bearing including a stationary ring and a rotary ring; and a motor including a stator and a rotor. The stator and the rotor of the motor generator have a smaller diameter than that of an outer peripheral part of the brake rotor, and an entirety of the motor, excluding a mounting part to the hub flange, is located within an axial range between the hub flange and an outboard-side surface of a chassis frame component. An insulating layer is interposed between the stationary ring and the stator.