54results about How to "Reduce electromagnetic waves" patented technology

The present invention discloses a package module with EMI shielding and the method thereof. The package module has a substrate or a PCB with at least one ground pad. A variety of electronic components are mounted on the substrate. The dielectric layer overlays a selected area which covers some electronic components and ground pads. Openings are formed within the dielectric layer and above ground pads. The shielding layer with at least two metal layers covers the dielectric layer and is electrically coupled, via the openings, to the ground pad. In general, there is a protection layer to encapsulate the entire substrate. The package module of the present invention not only achieves the requirement of miniature packaging but also reduces EMI caused by high speed electronic devices.

The invention discloses a control method of a communication terminal. The control method comprises the steps of obtaining an environment capacitance value; comparing the environment capacitance valuewith a preset first interval; under a condition in which the environment capacitance value is located within the first interval, judging whether a first preset condition is met, so as to determine whether a comparison result that the environment capacitance value is located within the first interval is generated because of an access of a human body; and under a condition in which the first presetcondition is met, controlling a radio frequency module to perform a power reduction operation. Based on the control method disclosed by the invention, on the premise of guaranteeing the user security,the possibility that the radio frequency module executes the power reduction operation in an unnecessary state can be reduced, and the communication performance of the communication terminal is guaranteed. The invention further discloses the corresponding communication terminal.

A method and an apparatus for reducing electromagnetic waves in a mobile device are provided. According to the method, in a mobile device having the first and second modules with different functions, the apparatus operates the first module at the first operating frequency. If there is a request for operating the second module while the first module is operated, the apparatus changes the first operating frequency to a second operating frequency which is different from the first operating frequency, and operates the first module at the second operating frequency. The apparatus reduces a total magnitude of electromagnetic waves caused by a simultaneous operation of two or more modules, thereby enhancing the quality of the mobile device and minimizing any undesirable impact upon the human body.

The object of the present invention is to provide a magnetic sheet composition, a magnetic sheet and a process for producing a magnetic sheet, wherein the magnetic sheet composition can reduce unnecessary electromagnetic waves emitted from electronic equipment and can suppress electromagnetic interference occurring in electronic equipment, that can be cured rapidly at a low temperature, does not generate odor, and does not cause corrosion. The magnetic sheet composition is characterized by comprising an aluminum chelate-based latent curing agent, a silanol compound or alkoxysilane compound represented by formula (A), an epoxy resin, an acrylic resin, and a magnetic powder. Formula (A) is (Ar)mSi(OR)n, wherein, m is 2 or 3; the sum of m and n is 4; Ar is an optionally substituted aryl group; R is a hydrogen atom or a methyl group; and, when n is two or more, the Rs may be the same as or different from each other.

In a discharge device for performing streamer discharge between a discharge electrode (41) including a plurality of discharge parts (61) and a counter electrode (42) including a plurality of counter parts (62) confronting the discharge parts (61), a resistor (60) is provided in a current carrying path between power source means (45) and the discharge parts (61).

The present invention provides one kind main controller shielding structure capable of shielding electromagnetic wave and dissipating heat for Internet refrigerator. The structure includes framed casing to hold CPU; porous part in the casing to dissipate heat the CPU produces; protrudent digitated plate on the CPU to transmit heat the CPU produces directly to the casing. The digitated plate is made of metal material with high heat conducting performance. The present invention has excellent CPU heat dissipating effect.

The invention provides an electric pump, which includes a stator assembly, wherein the stator assembly comprises a stator iron core and a winding, the winding comprises a main body segment, a first segment and a second segment, the main body segment is connected with the first segment and the second segment, the stator iron core comprises an iron core tooth part, an iron core yoke part and an iron core neck part, the iron core yoke part is located on the periphery of the winding, a first reference surface is defined, the first reference surface coincides with the axial central axis of the iron core tooth part and the axial central axis of the iron core neck part, the section of the stator assembly is made along the first reference surface, the upper end of the section of the main body segment is flush with the upper end of the section of the iron core yoke part body part, the lower end of the section of the main body segment is flush with the lower end of the section of the iron core yoke part body part, the electric pump further comprises a shielding piece, the shielding piece is made of a conductive metal material, and at least part of the shielding piece is located on the periphery of at least one of the first segment and the second segment. According to the invention, electromagnetic waves radiated to the outside can be reduced, so that interference of the electric pump to the outside can be reduced.

A connector for a module, the connector includes: a connector body, the connector body includes an access part; a contact point provided in the access part; a support part for loading a module and restricting its forward, backward, left, and right movement; a metal The cover is covered and locked on the connector body, and holds the module between the supporting part to maintain the connected state. It has a window for exposing the semiconductor chip of the connected module and a heat dissipation plate. In order to prevent problems such as poor contact with the module due to thermal load, the antimagnetic function is used to reduce the influence of electromagnetic waves on the connector to maintain the stability of the circuit operation, and to cool the semiconductor chip to maintain its operation stability.

In a discharge device for performing streamer discharge between a discharge electrode (41) including a plurality of discharge parts (61) and a counter electrode (42) including a plurality of counter parts (62) confronting the discharge parts (61), a resistor (60) is provided in a current carrying path between power source means (45) and the discharge parts (61).

The invention discloses a control method of a communication terminal. The control method comprises the steps of obtaining an environment capacitance value; comparing the environment capacitance valuewith a preset first interval; under a condition in which the environment capacitance value is located within the first interval, judging whether a first preset condition is met, so as to determine whether a comparison result that the environment capacitance value is located within the first interval is generated because of an access of a human body; and under a condition in which the first presetcondition is met, controlling a radio frequency module to perform a power reduction operation. Based on the control method disclosed by the invention, on the premise of guaranteeing the user security,the possibility that the radio frequency module executes the power reduction operation in an unnecessary state can be reduced, and the communication performance of the communication terminal is guaranteed. The invention further discloses the corresponding communication terminal.

A method and an apparatus for reducing electromagnetic waves in a mobile device are provided. According to the method, in a mobile device having the first and second modules with different functions, the apparatus operates the first module at the first operating frequency. If there is a request for operating the second module while the first module is operated, the apparatus changes the first operating frequency to a second operating frequency which is different from the first operating frequency, and operates the first module at the second operating frequency. The apparatus reduces a total magnitude of electromagnetic waves caused by a simultaneous operation of two or more modules, thereby enhancing the quality of the mobile device and minimizing any undesirable impact upon the human body.

The invention discloses an anti-electromagnetic method for a tethered UAV, which includes: separating the high-frequency burr wave in the high-voltage direct current through a feed-through capacitor or a feed-through capacitor and leading it to the ground for dissipation; connecting the positive line of the transmission cable and the The negative wire is wound at both ends of the preset magnetic ring, and the peak in the high-voltage direct current is reduced by the anti-phase action of the magnetic ring; the positive and negative wires of the transmission cable are twisted in pairs, so that the high-voltage direct current can The process of transmission in the cable cancels the electromagnetic waves emitted by the positive line and the negative line; the positive line and the negative line are coated with the first metal cladding layer, and the electromagnetic wave in the high-voltage direct current is converted into a relatively small electric transmission to the earth Dissipation; the electromagnetic wave in the high-voltage direct current is converted into heat and dissipated in the air by covering the cable module with a heat dissipation coating layer; the second metal cladding layer is coated on the motor to convert the electromagnetic wave in the high-voltage direct current into a relatively small Electricity is used to introduce relatively micro-electricity into the earth for dissipation.

The invention relates to energy-saving blanket which comprises an AC power input interface, an AC-to-DC converter electrically connected with the AC power input interface, a temperature control device connected with the AC-to-DC converter, a heating element heating sequence device connected with the temperature control device and heating elements connected with the heating element heating sequence device; the AC-to-DC converter is connected with the heating element heating sequence device, and the temperature control device is connected with the heating elements by a sensor. The energy-saving electric blanket is used after AC is converted into DC, thus reducing electromagnetic waves and eliminating the fear on electron waves; and the layout of heating wires of the electric blanket is realized by three groups, the power consumption is reduced, and the electric blanket is designed aiming at the problem of energy conservation all over the world.

The invention proposes a lighting module for a motor vehicle comprising a modulated intensity coherent light source. The features of the invention make it possible to increase the safety of devices of this kind by using a more reliable fault detection than the prior art. A method for controlling a device of this kind is also proposed.

The invention discloses a novel special controller for rope lights or string lights, which comprises a chip provided with eight lead pins, an oscillatory circuit consisting of a crystal oscillator andThe invention discloses a novel special controller for rope lights or string lights, which comprises a chip provided with eight lead pins, an oscillatory circuit consisting of a crystal oscillator andtwo capacitors, a current-limiting resistor, a resistor, a voltage regulator tube and a smart double-channel control tube. The chip of the controller is provided with a plurality of programs, therefo two capacitors, a current-limiting resistor, a resistor, a voltage regulator tube and a smart double-channel control tube. The chip of the controller is provided with a plurality of programs, therefore, only two copper wires are needed for the rope lights or string lights which use the controller of the invention to realize the changeable hue of the light and to achieve the effect of gradual chanre, only two copper wires are needed for the rope lights or string lights which use the controller of the invention to realize the changeable hue of the light and to achieve the effect of gradual changing, jumping, flashing and chasing. The lights using the controller have a plurality of changeable patterns, wide range of application and good lighting and decorating effect. The special controllerging, jumping, flashing and chasing. The lights using the controller have a plurality of changeable patterns, wide range of application and good lighting and decorating effect. The special controlleris easy to produce and use, reliable and safe when working, energy-saving and environment friendly, and can be widely applied as the special controller to the two-wire rope lights or string lights.is easy to produce and use, reliable and safe when working, energy-saving and environment friendly, and can be widely applied as the special controller to the two-wire rope lights or string lights.