32results about How to "Normal conduction" patented technology

The invention relates to the field of dimming and speed regulation related to illumination, motors and electronics, in particular to a motor-driven circuit for dimming or speed regulation control which is suitable for illumination of a silicon-controlled dimmer or adjustment of a silicon-controlled speed regulator and a control method. A detection compensation circuit for maintaining the normal work of the silicon-controlled dimmer consists of a voltage detection circuit, a current detection circuit, a follow current compensation circuit and a power factor compensation circuit; the on-off running state of the silicon-controlled dimmer or speed regulator is detected by a detection method combining output voltage change and current change of the silicon-controlled dimmer or speed regulator;the on-off and trigger running conditions of the silicon-controlled dimmer are provided by adopting a compensation method combining power factor compensation and follow current compensation; a control circuit of a load consists of a datum transformation circuit, an output duty cycle control circuit, an output current control circuit and a drive output circuit and produces a control signal by detecting mains supply AC phase-shedding operation output of the silicon-controlled dimmer or speed regulator; and the output power of the load is controlled by a load output duty cycle and load working current compound control method so as to realize large output power adjustable range of the load and high linearity of the adjusting process.

The present invention provides an analog signal sampling circuit capable of enabling the circuit to have high linearity, meanwhile, the processing of signal less than the minimum voltage in the circuit can be implemented. The analog signal sampling circuit can generate the constant voltage by arranging the voltage constant module as a voltage between gate source poles when the PMOSFET tube of the switch tube is conductive, the voltage between the grid and the source pole can be kept constant without changing with the variation of the input signal when the PMSFET tube is in the conducting state, the conductive electric resistance of the PMOSFET tube can not change following with the variation of the input signal, at last the PMOSFET has constant conductive electric resistance, the signal distortion through the PMOSFET tube is smaller, the high linearity sampling can be implemented. The invention also provides a switch capacitance circuit.

The invention provides an electromagnetic heating cooker and a control method and a control apparatus therefor. The electromagnetic heating cooker comprises a resonance circuit and an IGTB; the resonance circuit, the IGBT and an external power supply form an electromagnetic oscillation circuit; the control method comprises the steps of obtaining the input voltage of the external power supply; andwhen the input voltage is less than a preset threshold value, increasing the width of a PWM pulse signal for controlling on-off of the IGBT. By virtue of the electromagnetic heating cooker and the control method and the control apparatus therefor, oscillation stop of the resonance circuit of the electromagnetic heating cooker can be prevented without needing a timing circuit or a coupling circuit,so that the electromagnetic heating cooker is simple and easy to use, and low in cost.

The invention provides a device for a breakdown diode to initiatively trigger a bypass of a thyristor valve string. The device comprises a plurality of thyristor valves connected in series and accessories thereof. A breakdown diode (BOD) is connected in a position between the gate pole and the positive pole of each thyristor valve. When faults such as short circuit happen in the electrical system and a valve-based electronics (VBE) does not receive trigger signal of the thyristor valve string sent by a control and protection unit, the voltage at two ends of the thyristor valve string increases dramatically; when the forward voltage reaches the setting valve of breakdown voltage of the whole string of the breakdown diode (BOD), the breakdown diode (BOD) is converted to an on-state and sends trigger signal to the door poles of the thyristor valves depending on a sudden short circuit effect, the thyristor valves are in an on-state, and the valve-based electronics (VBE) automatically supplies trigger signals of the whole thyristor valve string according to a plurality of detected protection signals of the breakdown diode, so as to ensure that the thyristor valve string is in normal on-state for a period of time. The resistances and the capacitances connected in series arranged between the positive pole and the negative pole of each thyristor valve form a damp absorption circuit, and the resistances and the capacitances connected in parallel between the door pole and the negative pole of each thyristor valve form a circuit preventing the fault triggering of the thyristor. The limitation level of short circuit current is decided by the operation voltage of the breakdown diode. The damp absorption circuit restrains overvoltage in the closing process of the thyristor valves.

A downlink level shifting circuit includes a high side input network, a common gate voltage-withstanding structure and a low side latch circuit; the high side input network consists of two parallel PMOS devices of a common source structure, and transmits an input signal to the common gate voltage-withstanding structure; the common gate voltage-withstanding circuit includes a pair of common gate PMOS transistors, a pair of common gate NMOS transistors and two clamp diodes; and the low side latch circuit includes two pairs of NMOS transistors used as linear resistors and a latch structure formedby a pair of cross-coupled NMOS devices, and enables a high-side signal to be transmitted to a low-voltage region when a high-side voltage difference is very small.

The invention relates to a pressing and breakover process of a circuit board, comprising an inner-layer board and an outer-layer board which are made through blanking. The machining process mainly comprises the following steps of: making an inner-layer board circuit, pressing the outer-layer board, drilling, electroplating, printing, laminating boards, pressing laminating boards, making an outer-layer board circuit and printing with preventing weld paint; and then performing word printing, surface processing and shape machining for the obtained circuit board to obtain a finished product. The laminating board structure of the circuit board comprises a basal board which is formed by machining the inner-layer board and the outer-layer board through the steps, the upper surface and the under surface of the basal board are respectively provided with a layer of steel board, and the upper surface and the under surface of the steel board are respectively provided with a layer of kraft paper. Compared with the prior art, the invention has the characteristics that printing is connected with breakover, and the printing laminating boards are coherent together; relative to a laser blinding hole drilling process, the cost of the process is lower; and the laser blinding hole drilling process is changed into a pressing process subjected to printing, and normal breakover can be achieved after connection.

The application discloses a display panel. The display panel comprises a first connecting part on which a first pin part is arranged; a second connecting part on which a second pin part is arranged; aglue line arranged between the first connecting part and the second connecting part, wherein the conductive glue line at least completely covers at least one in the first pin part or the second pin part, and at least a part of the glue line is conductive adhesive. By adopting above structures, at least majority area of the first pin part and the second pin is covered by the glue line; even if theelectronic device is located in a moist environment and even the moisture is existent, trace liquid can only attach to the glue line but not directly contact with the first pin part or the second pinpart, thereby reducing the probability that the moisture enters the display panel to cause the short-circuit of the first pin part or the second pin part, and guaranteeing the normal work of the display panel. The invention further provides an electronic device including the above display panel.

The invention relates to the field of display, and in particular relates to a display panel, a manufacturing method thereof and a display device. The problem that a planarization layer is destroyed inan anode etching process in the prior art is solved. According to the structure of the display panel, an etch barrier layer is formed on the planarization layer; a conductive film layer is formed onthe etch barrier layer; the conductive film layer is processed by a photolithography process to form a patterned anode; and the etch barrier layer is used to prevent the planarization layer from beingcorroded by an ashing material used when the patterned anode is formed. According to the technical scheme provided by the invention, the planarization layer is protected by the etch barrier layer; the planarization layer is prevented from being corroded by the ashing material used when the anode is etched during the anode etching process; and the problems of inaccurate position of a evaporation luminescent layer and poor display performance, which are caused by uneven thickness of a pixel defining layer formed on the planarization layer, are prevented.

The invention provides a cascaded light-emitting diode light string with low power consumption, which includes a main light string and at least one sub-light string, wherein the main light string receives a carrier light-emitting signal to control a light-emitting diode module to emit light; the sub-light string is cascaded with the main light string; a signal intensifier of the sub-light string enhances the carrier light-emitting signal to drive the light-emitting diode module to emit light; and when the voltage of the carrier light-emitting signal is lower than the low level voltage, the light-emitting diode module enters a low power consumption mode.

The invention belongs to the field of electronic equipment and in particular to a binding post comprising a male connector, a female connector, a plug and a socket, wherein the plug is mounted on thelower end of the male connector; the female connector is provided therein with the socket; the plug has a shape like a circular truncated cone having a wide top and a narrow bottom; the outer surfaceof the plug is provided with elastic rings in the same shape; soft magnets are disposed in the elastic rings; the bottom of the socket is provided with a strong magnet; the plug and the socket are provided therein with locking structures; when the plug moves to the bottom of the socket, a snap ring disposed on the socket cooperates with a snap slot disposed on the plug so that the socket locks andfixes the plug; a Na(OH) solution is arranged inside the plug and flows into a gap between the plug and the socket through a flow channel on a first screw groove to realize electrical conduction between the plug and the socket; the male and female connectors are provided with the locking mechanism so that the plug and the socket are closely attached to each other to solve the virtual connection of the binding post caused by the poor contact between the plug and the socket.

The invention relates to the technical field of nursery stocks, in particular to a lithium ion battery cathode material lithium ferric manganese phosphate material and preparation processing equipment thereof.The lithium ion battery cathode material lithium ferric manganese phosphate material is prepared from 70-100 parts of lithium iron phosphate, 5-10 parts of conductive material, 5-10 parts of binder, 5-10 parts of modified silver powder, 25-50 parts of deionized water, 1-3 parts of metal oxide, 2-5 parts of dispersing agent and 1-3 parts of low-temperature resistance material; the conductive material comprises a carbon conductive agent and a metal ion conductive agent, the ratio of the carbon conductive agent to the metal ion conductive agent is 1: 1, and the carbon conductive agent comprises one or more of carbon black, amorphous carbon, carbon nanotubes, carbon nanowires, carbon gel and graphene. The lithium iron phosphate battery has the beneficial effects that when the battery is used in a low-temperature environment, the resistance value of the low-temperature resistance material is increased due to temperature reduction, so that the calorific value of the lithium battery is increased, the lithium ion battery can be normally conductive due to temperature rise, and the lithium iron phosphate battery can continue to work.

The invention relates to a method for adjusting operational amplifier input offset voltage in an automobile fuel injection system. The method is characterized in that the characteristic that a suspended grid electrode stores electric charges is utilized, enough voltage is added to a drain electrode and a grid electrode of a metal oxide semiconductor (MOS) transistor, a certain amount of electric charges are programmed on the suspended grid electrode, and threshold voltage of the transistor is adjusted; the voltage applied to the suspended grid electrode is improved or reduced as required, and the transistor conducts electricity normally. According to the method, after the adjustment, the input offset voltage of an operational amplifier is smaller than 500 microvolts.

The invention discloses a silver nanowire and a preparation method thereof, and belongs to the technical field of precious metal powder new material preparation. The length of the silver nanowire prepared by the preparation method is 5-15 microns, and the diameter of the silver nanowire is 150-300 nm; the purity of silver nanowires is 100%, the silver nanowires can be rapidly and efficiently prepared with low energy consumption through the preparation method, silver protons formed by the silver nanowires serve as crystal nucleuses, other metal particles and other ions do not need to be additionally added, the conductive function of a silver nanowire conductive film is improved, and the preparation method is suitable for large-scale production of the silver nanowires.

The invention relates to a control circuit and a control method for an outdoor resistance training device, and solves the problems that a magnet is demagnetized and damaged while resistance is provided by large current backflow generated by a permanent magnet self-generator in fast movement through the design of the control circuit and the control method; and the current change caused by the change of the movement speed changes the resistance and deviates from the resistance level set value. The control circuit comprises a permanent magnet self-generator, a rectifying and filtering unit, a backflow adjusting unit, a sampling and digitizing unit and a central control unit, wherein the permanent magnet self-generator, the rectifying and filtering unit and the backflow adjusting unit are electrically connected in sequence and then are connected to the central control unit; and the input end of the sampling and digitizing unit is electrically connected with the backflow adjusting unit, and the output end of the sampling and digitizing unit is connected to the central control unit.

The invention discloses a voltage division proportion adjusting circuit, a switch control circuit and a cooking utensil. The voltage division proportion adjusting circuit comprises: an oscillation loop, wherein a first end of the oscillation loop is used for being connected with a power supply, and a second end of the oscillation loop is used for being connected with a resonance end of an I GBT module; a first voltage detection end which is connected with the first end of the oscillation circuit through a first resistor; and a second voltage detection end which is connected with the second end of the oscillation circuit through a second resistor; The voltage division proportion adjusting circuit further comprises: a first adjustable resistor, wherein one end of the first adjustable resistor is connected with the first voltage detection end, and the other end of the first adjustable resistor is grounded; and / or a second adjustable resistor, wherein one end of the second adjustable resistor is connected with the second voltage detection end, and the other end of the second adjustable resistor is grounded. Thus, when the voltage of the mains supply is low or high, the resistance value of the first adjustable resistor or the resistance value of the second adjustable resistor is adjusted, so that the I GBT module can be normally conducted.

The invention relates to a compression-resistant cable which comprises a secondary cable and a primary cable. The primary cable comprises a first wire harness and a primary port, the primary port is connected with the first wire harness, the secondary cable comprises a second wire harness and a secondary port, the secondary port is connected with the second wire harness, the second wire harness comprises hollow insulating tubes and core wires, and the core wires are penetratingly arranged in the insulating tubes and are used for delivering media. The compression-resistant cable is characterized in that a compression-resistant tube is arranged on the outer sides of the insulating tubes, three arc-shaped grooves are uniformly formed in the inner side of the compression-resistant tube, circlecenter angles of the arc-shaped grooves are 270 degrees, a first cotton weaving protective layer is arranged on the outer side of the compression-resistant tube, a flame-retardant layer made from ceramic fiber materials is arranged on the outer side of the first cotton weaving protective layer, balls made from elastic materials are arranged between the flame-retardant layer and the cotton weavingprotective layer and are annularly uniformly distributed, and an insulating outer sheath which wraps the flame-retardant layer is arranged on the outer side of the flame-retardant layer. The compression-resistant cable has the advantages that external pressures can be effectively cushioned, accordingly, normal electric conduction can be assuredly carried out by cores of the compression-resistantcable, and the problem of core breakage can be solved.

The invention discloses a Zhuang nationality medicine for preventing and curing post-stroke depression and a preparation method thereof. The composition is prepared from five raw materials including desmodium triquetrum, tuber fleeceflower stem, millettia pulchra(Dunn)Kurz var.laxior(Dunn)Z.Wei, kadsura heteroclita(Roxb.)Craib and white paeony root. The invention further provides a preparation method of the Zhuang nationality medicine for preventing and curing post-stroke depression. The Zhuang nationality medicine provided by the invention has the effects of clearing away heat and toxic materials, dispelling wind and eliminating dampness, and activating and harmonizing qi and blood, so as to ensure dragon road smoothness and normal conduction and achieve a physiological status of qi-blood reconciling and three-qi synchronization. The Zhuang nationality medicine has a significant effect of preventing and curing the post-stroke depression.

The present invention provides a pin contact and a connector assembly. The pin contact comprises a plugging end, wherein the plugging end is provided with an insulation sealing element, the insulation sealing element has an insulation sealing element sealing matching surface used for being sealingly matched with a drainage channel sealing matching surface so as to block a channel inner end opening when the plugging end is in a plugging position. When the plugging end of the pin contact is in the plugging position, the insulation sealing element sealing matching surface can be sealingly matched with the drainage channel sealing matching surface on a jack contact to block a drainage channel, so that water in the drainage channel can be sealed and isolated by the insulation sealing element, and sealing and isolation between the plugging end and the water in the drainage channel can be achieved, thereby ensuring normal electric conduction of an electrical connector.

The present invention provides a plug and connector assembly, the plug includes a plug insulator and pin contacts extending left and right on the plug insulator, characterized in that the pin contacts are provided with insulating seals, the The insulating seal has an insulating seal sealing mating surface for sealingly cooperating with the periphery of the channel inner end opening of the drainage channel to block the channel inner end opening when the pin contact and the socket contact are located at the insertion station. When the pin contact and the socket contact are located at the insertion station, the sealing mating surface of the insulating seal can be sealed with the inner end opening of the drainage channel on the socket contact and seal the drainage channel, so that The water in the drainage channel is sealed and isolated by the insulating seal, so as to realize the sealing and isolation of the pin contacts and the water in the drainage channel, and ensure that the electrical connector can conduct electricity normally.

The invention discloses an anti-leakage structure for the positive electrode slurry of a lithium battery, which comprises a battery body, a fixing plate and a conductor rod. The connection pipe is hollow, and the outside of the connection pipe is evenly clamped and installed with a first fixed ring and a second fixed ring. The inside of the fixed plate is connected with a threaded joint near the end of the positive electrode, and several damping springs are evenly connected between the outside of the threaded joint and the inner wall of the fixed plate, and the end of the damping spring is sleeved and connected with a sleeve. One end is fixedly connected to the inner wall of the fixed plate. The positive end is firmer and less likely to break, the slurry inside will not leak, and the safety performance is good. The stability in use is improved, the length of the positive electrode of the battery can be changed to meet different needs in use, and the conduction is uniform and stable. The positive end is not easy to be damaged, and the battery can maintain good strength after falling from a high place or being hit by other objects.

The present invention provides an electromagnetic heating cooker and its control method and control device. The electromagnetic heating cooker includes: a resonant circuit and an IGBT, and the resonant circuit, IGBT and an external power supply form an electromagnetic oscillation circuit; the control method includes: obtaining the The input voltage of the external power supply; when the input voltage is less than the preset threshold, increase the width of the PWM pulse signal used to control the IGBT on and off. The electromagnetic heating cooker and its control method and control device of the present invention can prevent the resonant circuit of the electromagnetic heating cooker from vibrating without adding a timing circuit or a coupling circuit, and are easy to use and low in cost.

The invention discloses a lithium battery positive paste leak-proof structure. The structure comprises a battery body, a fixed plate and a conductor rod; a positive end of the battery body is fixedlyconnected with the fixed plate through a bolt, the middle part of one end, far away from the battery body, of the fixed plate is connected with a connecting pipe in hollow arrangement; a first fixingring and a second fixing ring are uniformly clamped at the external of the connecting pipe; the end part, close to the positive electrode, in the fixed plate is connected with a screwed joint, multiple damping springs are uniformly connected between the external of the screwed joint and the inner wall of the fixed plate; the end parts of the damping springs are connected with sleeved in the sleeving manner; one end of each sleeve is fixedly connected with an inner wall of the fixed plate. The positive end is more firm and hard to crack, the internal paste cannot leak, and the security performance is good. The stabilization performance is improved in the use, the positive electrode of the battery can be changed, the structure can be suitable for different demands in the use, and the conducting is uniform and stable. The positive end is hard to damage, and the battery can maintain good strength after falling off from the height or being impacted by other objects.

The invention provides an expansion joint of a contact rail, which belongs to the technical field of rail transportation. It solves the problem of complex structure of the expansion joint of the existing contact rail. The expansion joint of the contact rail includes two elongated connection blocks respectively arranged in the accommodation grooves on both sides of the contact rail. The shape of the connection block matches the shape of the accommodation groove. The connection between the block and the two contact rails is pressed by at least one compression bolt that passes through the two connecting blocks respectively. The two contact rails can slide relative to each other along the length direction of the connecting block. The connecting block is made of conductive material. There is a gap between the two side surfaces of the block and the two inner side walls of the containing groove, and a spring contact finger in the shape of a strip is arranged between the inner end surface of the connecting block and the bottom of the containing groove. The expansion joint of the contact rail realizes a set of expansion joints to simultaneously realize the mechanical connection and the conductive connection of the connecting block and the contact rail, so that the structure of the contact rail is simpler and the weight is lighter.

An analog signal sampling circuit is provided. The circuit has high linearity and can process the signal lower than the lowest voltage in the circuit. The analog signal sampling circuit generates a constant voltage by setting a voltage constant module as the voltage between the gate and the source when p-type metal oxide semiconductor field effect transistor (PMOSFET) tube used as the switching tube is turned on. The voltage between the gate and the source is kept constant and not changed with the change of the input signal when the PMOSFET tube is in the turn-on state, so that the turn-on resistance of the PMOSFET tube is also not changed with the change of the input signal, thus providing the PMOSFET tube with constant turn-on resistance, and reducing the distortion of the signal through the PMOSFET tube. The sampling circuit realizes high linearity sampling. A switching circuit is also provided.

The invention discloses a high-compression-resistance cable, which comprises a cable core and an insulating layer, wherein the cable core is arranged in a protective shell, the protective shell is ofa hexagonal structure, a buffer elastic layer is arranged on the outer circumferential surface of the protective shell, a cotton woven protective layer is arranged on the outer circumferential surfaceof the buffer elastic layer, an air bag protective layer is arranged between the insulating layer and the cotton woven protective layer, an elastic protective layer is arranged on the peripheral surface of the insulating layer, a damping assembly is arranged between the insulating layer and the elastic protective layer, and the damping assembly comprises a top column, a convex top and an elasticpiece. When the elastic protective layer is pressed, the top column is driven to slide relatively, the convex top abuts against the elastic piece to absorb pressure, when the pressure is too large andthe insulation layer deforms, the air bag protective layer and the buffer elastic layer ensure that external pressure can be effectively buffered, and the hexagonal protective shell is high in structural strength when being subjected to external force. Therefore, the wire core can conduct electricity normally, and the phenomenon of wire core breakage is avoided.

The invention provides a device for a breakdown diode to initiatively trigger a bypass of a thyristor valve string. The device comprises a plurality of thyristor valves connected in series and accessories thereof. A breakdown diode (BOD) is connected in a position between the gate pole and the positive pole of each thyristor valve. When faults such as short circuit happen in the electrical systemand a valve-based electronics (VBE) does not receive trigger signal of the thyristor valve string sent by a control and protection unit, the voltage at two ends of the thyristor valve string increases dramatically; when the forward voltage reaches the setting valve of breakdown voltage of the whole string of the breakdown diode (BOD), the breakdown diode (BOD) is converted to an on-state and sends trigger signal to the door poles of the thyristor valves depending on a sudden short circuit effect, the thyristor valves are in an on-state, and the valve-based electronics (VBE) automatically supplies trigger signals of the whole thyristor valve string according to a plurality of detected protection signals of the breakdown diode, so as to ensure that the thyristor valve string is in normal on-state for a period of time. The resistances and the capacitances connected in series arranged between the positive pole and the negative pole of each thyristor valve form a damp absorption circuit, and the resistances and the capacitances connected in parallel between the door pole and the negative pole of each thyristor valve form a circuit preventing the fault triggering of the thyristor. The limitation level of short circuit current is decided by the operation voltage of the breakdown diode. The damp absorption circuit restrains overvoltage in the closing process of the thyristor valves.

The invention discloses a power supply monitoring circuit and a switching power supply, and the power supply monitoring circuit comprises a core sampling control module which is used for outputting a first control signal with a first logic level according to the level state of a power supply voltage; the charge pump is used for generating corresponding reference voltages according to the effective level states of different reset indication signals; the logic level conversion module is used for converting the logic level of the first control signal according to the reference voltage so as to output a second control signal with a second logic level; and the output module comprises at least one switch tube, a grid electrode receives the second control signal, the switch tube is used for outputting an effective reset indication signal at a drain electrode when the switch tube is switched on, and the switch tube is a depletion type transistor. The circuit can work normally when the power supply voltage is 0V, and is small in occupied area and high in stability and accuracy.

The invention discloses a connecting line structure, the connecting line structure is provided with at least two paths of wires, the reliability of the connecting line structure is higher, and after one path of wire between two intersection points is broken, at least one path of wire is conductive. In actual use, as long as all the leads between the two intersection points are not fractured completely, the connecting line structure can still be conducted normally.