43results about How to "Small power attenuation" patented technology

The invention discloses a test seat of a passive microwave radio frequency transformer. The test seat comprises a cavity, a circuit board, a positioning board and a spring thimble clamp. An open-ended cavity of an upper end surface of the cavity is fixedly connected to a pedestal. The circuit board and the positioning board are fixedly placed in the cavity from bottom to top. The circuit board is connected to monitoring equipment through a lead. The positioning board is provided with a groove which is used for placing the transformer. The spring thimble clamp is fixedly connected to a stand column and is provided with a compression bar which can elastically recover stretching. A position of the compression bar directly faces the groove. The stand column is fixedly connected to the pedestal. In the invention, a tested device is placed in the groove so as to carry out positioning; and the compression bar which can elastically recover stretching is used to carry out fastening so that tight contact of a pin is realized. By using the test seat of the invention, problems of mechanical damages and poor contact brought by a welding mode in the prior art are solved. The test seat possesses characteristics that the structure is simple; reliability and maneuverability are high; loading and unloading are convenient; test efficiency is high; the device has no loss and so on. And the test seat is suitable for a test of a large quantity of products.

LED lighting equipment having a wireless communication function at least comprises a lamp housing (20), a communication module (22) and an LED light source module (40) and is characterized in that the communication module having a wireless relaying function is connected with multiple antennae, and the multiple antennae are arranged inside the lamp housing or on the outer surface of the lamp housing in a space diversity manner. The LED lighting equipment is wide in wireless signal coverage and can realize no-dead-corner wireless signal coverage in an indoor area where the lighting equipment is mounted; besides, the antennae, transmitting signals, of the equipment are arranged in a space formed by the lamp housing and an outer-layer housing and can be protected by the outer-layer housing, so that damage caused by the external environment to the antennae can be prevented, and the quality of the wireless signals cannot be affected. Meanwhile, the antennae are arranged on the surface of the lamp housing capable of transferring heat, so that the antennae are located in the dry environment all the time, and the influence caused by environment moisture on the service life of the antennae is avoided.

The invention relates to an electric heating hand warmer with a ceramic electric heating substrate. The electric heating hand warmer comprises a bag body and an electric heating body disposed in the bag body. The electric heating hand warmer is characterized in that the electric heating body is the ceramic electric heating substrate serially connected with an overheat protector. By using the ceramic electric heating substrate as the electric heating body with the serially connected overheat protector, the electric heating hand warmer is simple and reasonable in structure and fast in heating, heating conditions of the ceramic electric heating substrate can be monitored by the overheat protector in real time, when dry heating due to the ceramic electric heating substrate exposes out of liquids occurs, power-off protection is performed by the overheat protector, dry heating is avoided, and accordingly the electric heating hand warmer is safe, reliable and long in service life. In addition, the novel heating body is high in heating efficiency, electricity-saving and environment-friendly, and sustainable development of industrialization is benefited.

The invention discloses a formula of high-temperature insulating gel for an electric heating film heating pipe. In the formula, the high-temperature insulating gel comprises the following components in percentage by weight: 20-30 percent of epoxy resin, 5-15 percent of epoxy resin insulating coating, 7-15 percent of ester ether solvent, 6-12 percent of ketone solvent, 15-25 percent of ester solvent, 5-10 percent of alcohol ether and 10-20 percent of glycidol ether thinner. A coating prepared according to the formula is coated outside an electric heating film of the electric heating film heating pipe, and has the advantages of wear resistance, acid and alkaline resistance, bonding fastness and high thermo-cycling resistance.

The invention belongs to the technical field of solar cells, and particularly relates to a power gain type black photovoltaic backboard which comprises a black layer, an inner coating, a supporting layer and an outer layer which are sequentially arranged from inside to outside, and the position of the black layer corresponds to gaps of photovoltaic module cells; the supporting layer contains a filler, and the filler comprises 75-95% of one or more of spherical aluminum oxide, silica powder, aluminum nitride, boron nitride, zinc oxide and magnesium oxide with the average particle size of 0.01-20 m and 5-25% of rutile titanium dioxide with the average particle size of 0.2-0.8 m. The photovoltaic backboard provided by the invention meets the color matching problem of a packaging material and a battery piece in BIPV application, achieves an attractive effect, also has a power gain effect, and has long-term stable weather resistance.

The invention discloses an earthworm grain resistant EVA adhesive film material for a photovoltaic module. A metal compound is added in an EVA adhesive film formula to serve as an acetic acid catching agent, and the adding amount of the metal compound is 0.1-2.0% of the mass of the EVA adhesive film formula. The earthworm grain resistant EVA adhesive film material has the advantages that acetic acid produced through EVA degradation and decomposition is completely consumed by adding the metal compound catching the acetic acid in an original common EVA adhesive film formula and is fixed in an adhesive film, it is ensured that no free acetic acid movement phenomenon occurs in adhesive film ageing, namely the harm produced by acetic acid ageing is relieved, produced earthworm grains are remarkably decreased, the assembly power is ensured, power attenuation of the assembly is greatly reduced, and the service life of the assembly is prolonged.

The invention discloses a frameless crystal silicon cell complete anti-PID light assembly and solar panel, and the frameless crystal silicon cell complete anti-PID light assembly and solar panel comprises a front glass plate, a battery piece, a backboard and a wiring box, the battery piece is located between the front glass plate and the backboard; the front glass plate is the photovoltaic super white figured glass with thickness of 4.0-5.0mm, the packaging material layer is respectively formed between the battery piece and the front glass plate and between the battery piece and the backboard, the packaging material layer is polyolefin, the wiring box is electrically connected to the battery piece. The frameless crystal silicon cell complete anti-PID light assembly needs no aluminum frame for satisfying the loading requirement of 5400pa without frame; and the assembly is resistant to PID completely, the weight, thickness and the manufacturing cost of the assembly are reduced. The service life of the assembly is prolonged, the power attenuation of assembly during the using process is reduced, the application range of the crystal silicon assembly is expanded, and the convenience and transportability of the crystal silicon assembly are raised.

The invention discloses an instant heating-type water-electricity separation heater which comprises a shell, a circulating guide system, a heating component and a control system; the circulating guide system consists of a plurality of electric heating tubes alternately arranged up and down, and an upper guide cavity and a lower guide cavity which are positioned on two ends of the electric heating tubes; the lower guide cavity is connected with a water inlet pipe and a water outlet pipe; a plurality of guide holes corresponding to electric heating tubes are arranged on the upper guide cavity and the lower guide cavity; the adjacent guide holes up-and-down are communicated through a guide groove; each electric heating tube is inserted into the guide holes corresponding to two ends of the electric heating tube to form a reflow guide passage; the heating component consists of a heating film coated on the periphery of each electric heating tube, argent electrodes coated on the outside of two ends of the heating film and electrodes sleeved on the periphery of the argent electrodes; and the electrodes are connected to a power supply. The instant heating-type water-electricity separation heater changes the mode that in the prior electric water heater, an electric heating bar is directly put into water and heats the water; through combining the electric heating tubes and the heating films for heating and heat conduction, the instant heating-type water-electricity separation heater realizes real water-electricity separation and has good safety.

The invention discloses a metal PTC electric heating tube component of an air conditioner. A wound PTC heating filament of which two ends are sleeved and fixed with a conductive bar respectively, is placed in the center of a copper-plated iron pipe; a part of the conductive bars at two ends of the wound PTC heating filament is positioned outside the copper-plated iron pipe; magnesium oxide powderas heat conducting and insulating powder is filled in the copper-plated iron pipe; the wound PTC heating filament is tightly pressed in the center of the magnesium oxide powder in the copper-plated iron pipe; an aluminum pipe of a plurality of aluminum radiating fins is sleeved outside an expansion sleeve of the copper-plated iron pipe, namely the copper-plated iron pipe is tightly matched with the aluminum pipe, and the aluminum pipe is tightly matched with the aluminum radiating fins; and pipe orifices at two ends of the copper-plated iron pipe are sealed by silicon rubber and then sleeved into a porcelain head. The metal PTC electric heating tube component has the advantages of reasonable structure and better safety performance and durability. A manufacturing method for the component comprises the following steps: cutting the pipe, grinding the pipe, drilling the pipe, cleaning, winding wires, cleaning, drying, threading, measuring wires, spot welding, filling, stuffing a film, measuring withstood voltage, contracting the pipe, detecting the length of the pipe, middle inspection, peeling, pulling out colloidal particles, cutting a pin, straightening, inversing pipe angles, expanding the pipe, sealing, measuring the withstood voltage, measuring insulation, and measuring resistance.

The invention discloses a preparation method of a silane crosslinked ethylene-vinyl acetate copolymer adhesive film, which comprises the following steps: evenly mixing a composition, extruding, casting, cooling, drawing, and coiling to obtain the silane crosslinked ethylene-vinyl acetate copolymer adhesive film, wherein the extruding processing temperature is 100-150 DEG C; and the composition comprises the following components in parts by mass: 100 parts of ethylene-vinyl acetate copolymer, 0.1-2 parts of silane coupling agent A, 0.1-2 parts of silane coupling agent B and 0.01-0.2 part of organic peroxide. According to the invention, silane crosslinking is late crosslinking, crosslinking reaction does not need to be performed in a laminating machine, and the packaging of an assembly can be finished by simply pressurizing for 5-8 minutes under conventional treatment conditions in the vacuum laminating machine, thus greatly improving the laminating efficiency and saving the production cost.

The invention discloses an LED (light-emitting diode) light source mechanism for curing a UV (ultraviolet) side of a touch screen. The LED light source mechanism comprises an irradiation head, a light source (1), a cooling unit (2), a controller, an MCU (micro-control unit) control module, an operation interface and a second shell, the irradiation head comprises a first shell which is of a sealed hollow structure with a barrier, the light source (1) is an LED line light source, is arranged in the first shell and externally emits light through the barrier, the cooling unit (2) is positioned in the first shell and comprises one or more than one fan, the controller controls the light source (1) and the cooling unit (2) and comprises a terminal, the terminal comprises an input end and an output end, the output end is connected with the first shell, the MCU control module is electrically connected with the input end and the output end, the operation interface is connected with the input end, the second shell is of a hollow structure, both the terminal and the MCU control module are positioned in the second shell, and the operation interface is positioned outside the second shell and connected with the second shell.

The invention discloses a constant-temperature co-fired ceramic heating base plate and a preparation method thereof. The constant-temperature co-fired ceramic heating base plate comprises two or three layers of laminated ceramic base plates (5), (6) or (7), (5), (6); the ceramic base plates (7), (5), (6) are taken as carriers, a resistor heating circuit board (2) printed with resistor slurry is packaged in the laminated layers; a constant-temperature resistor board (3) printed with constant-temperature resistor slurry is packaged in the laminated layers of the ceramic heating base plates (5), (7); and sliver copper sheets (8) are welded on both ends of the resistor heating circuit board (2). The purpose of the invention is to provide the constant-temperature co-fired ceramic heating base plate with rapid warming, high thermal efficiency, energy saving, uniform heating, long service life and low power attenuation and the preparation method thereof. Particularly due to addition of a temperature control component and insulating layers, the ceramic heating base plate has the function of automatic control of heating temperature.

The invention discloses an energy-saving heating body coated by a novel electrothermal film. The energy-saving heating body comprises a front fixing plate, a rear fixing plate and an electrothermal pipe. The electrothermal pipe comprises a quartz glass tube body, the electrothermal film is deposited on the outer wall of the quartz glass tube body in a vapor phase mode, the electrothermal pipe is connected in series with channels in the front fixing plate and the rear fixing plate to form a waveform through pipe, one end of the through pipe is connected with a water inlet, and the other end of the through pipe is connected with a water outlet. The formula of solutions of the electrothermal film comprises stannic chloride, alcohol, antimony butter, rare earth elements, ferric trichloride, absolute ethyl alcohol, titanium tetrachloride and boric acid. A water groove is formed outside the electrothermal pipe, the water groove is provided with a cold water inlet and a water outlet. The formula of the solutions of the electrothermal film is simple in gradient, convenient to prepare, and good in using performance, and the energy-saving heating body is high in thermal utilization efficiency, saves energy, and is friendly to environment.

The invention discloses a container, a cooking utensil and a manufacturing method of the container. The container comprises a body and a magnetic conduction layer, and the body is a heat conduction piece; and the magnetic conductive layer is arranged on the outer surface of the body, at least one part of the magnetic conductive layer is located on the bottom face of the body, the magnetic conductive layer comprises a first magnetic conductive layer and a second magnetic conductive layer which are stacked, the second magnetic conductive layer is located on the side, away from the body, of the first magnetic conductive layer, and the porosity of the second magnetic conductive layer is larger than that of the first magnetic conductive layer. According to the container, the magnetic conductive layer is arranged on the outer surface of the body, the electromagnetic heating function of the container is achieved, the second magnetic conductive layer with the large porosity is arranged on the outer side of the first magnetic conductive layer, and the electromagnetic heating power of the container can be improved; in addition, the second magnetic conductive layer with the large porosity further has the good heat insulation and storage effects and the good noise reduction effect, so that heat loss during electromagnetic heating of the container can be reduced, and due to the fact that the compactness of the first magnetic conductive layer is high, power attenuation caused by long-term use of the container can be reduced.

The invention discloses an iron chromium aluminum low electromagnetic radiation heating structure, which comprises an electric heating film, and is characterized by further comprising at least one heating unit, the heating unit comprises two electric heating films which are attached in a mirror image manner, and circuit structures of the two electric heating films are mutually mirrored. The two electric heating films which are attached in a mirror image manner can increase the heating power of the unit area, and the two electric heating films which are attached in a mirror image manner are connected in a reverse series mode. Reverse series connection of the two electric heating films which are attached in a mirror image manner refers to that each electric heating film is supposed to have an interface A and an interface B which are respectively connected to a positive electrode and a negative electrode of a power supply, the interface A of one electric heating film is connected to the positive electrode, and the interface B of the other electric heating film which is attached to the electric heating film in a mirror image manner is connected to the positive electrode, so that the electric heating films are opposite in current flow direction, and generated electric fields can be counteracted. The iron chromium aluminum low electromagnetic radiation heating structure has the advantages that two mutually mirrored electric heating films which are attached and connected in a series mode are adopted, and the two electric heating films are opposite in current flow direction so as to counteract the electromagnetic fields; and the iron chromium aluminum low electromagnetic radiation heating structure adopts the iron chromium aluminum electric heating films, is small in power attenuation and long in service life, and has far-infrared radiation.