3, in the world of electronic circuit boards, HDI (High Density Interconnect, high-density interconnect) is emerging, leading the revolution of circuit board manufacturing processNew. First of all, let's uncover the mystery of HDI: it is a precision technology to achieve a leap in line density through micro-blind burying technology and laser technology.
4, the HDI board is a technology leading circuit board design, its core feature is its unique Microvia technology. Specifically, when the aperture is reduced to an astonishing 6mil or less, and the hole ring diameter is as low as 0.25mm, this constitutes the high-density characteristic of the HDI board. This means that in the same area, it can achieve an amazing 130 points/square inch contact density, far beyond the level of traditional circuit boards.
5, the manufacture of HDI board usually adopts the stacking method, and the increase in the number of layers symbolizes the upgrade of technology. The basic HDI board is mainly one time stacking, while the high level HDI uses two or more times stacking technology, combined with advanced printed circuit board (PCB) technology such as hole stacking, electroplating hole filling, laser direct drilling. The applications of these technologies are mainly reflected in high-end areas, such as 3G mobile phones, advanced digital cameras and integrated circuit (IC) carrier boards.
6, in the world of automotive electronics, the circuit board plays a key role, is critical to vehicle safety and reliability. Discuss whichPlus energy savings.
2, do not hurt, Apple wireless charger does not hurt the battery. The principle of the wireless charger is electromagnetic induction, the charger generates a magnetic field through the current, and the mobile phone generates a current through the magnetic field induction, so as to charge the mobile phone, so the Apple wireless charger will not cause damage to the battery. The wireless charger can get rid of the bondage of the charging line, avoid the repeated insertion and removal of the charging line, the loss of the mobile phone is smaller, the mobile phone life is higher, and the phenomenon of wire clutter on the desk will disappear.
3, wireless charging treasure harm to the mobile phone battery explanation is no harm, because the wireless charging treasure isIt is an external battery, equivalent to the second battery of a mobile phone. There is no risk to the phone. It combines a magnetic wireless charger, magnetic wireless charging mobile power and other functions.
1, substrate material: this is the core material of the circuit board, common epoxy glass fiber board, polyimide board, etc. These materials have good insulation, mechanical strength and processing properties. Epoxy fiberglass board is widely used for its excellent electrical properties and processing adaptability. Polyimide plate has higher heat resistanceAnd resistant to chemical corrosion. Conductive materials: used to form the lines in the circuit, common metals such as copper, silver, and gold.
2, insulating substrate: the main part of the circuit board is usually composed of insulating substrate. These substrates are usually made of composite materials such as glass fiber, epoxy resin and other materials. These materials have good insulation, mechanical strength and processing properties. They provide the support structure of the board and ensure isolation between the circuits. Conductive materials: The circuit on the board is made of conductive materials, most commonly copper and metal foil.
3, the circuit board usually uses glass fiber clothAnd epoxy resin as the main material. Glass fiber cloth has the characteristics of high strength, corrosion resistance and high temperature resistance, while epoxy resin has excellent insulation properties and chemical corrosion resistance, which can ensure the stability and reliability of the circuit board. In addition to glass fiber cloth and epoxy resin, the production of circuit boards also needs to use some auxiliary materials, such as copper foil, printing ink and so on.
4, the material of the circuit board is mainly the following: glass fiber board. This is the most common circuit board material and is commonly used in most electronic devices. Fiberglass board has good insulation, mechanical strength and heat resistance. It consists mainly of ringsOxygen resin and glass fiber cloth, after processing to form. Metal circuit board. Unlike traditional fiberglass boards, metal circuit boards use metal as the substrate material.
1, through the power supply module after the output of direct current through 2M active crystal inverter into high frequency communication power supply of low winding. Coupling energy through 2 inductors Beijing Wireless Circuit Board , the electrical output of the secondary coil is changed into direct current to accept the conversion circuit to charge the battery.
2, wireless charging base to increase the coil, or do not modify it, you increase the coil not only did not play a good effect but affect the speed of charging, increase the coil is equal to increase the resistance, it will make the current slow, the coil is proportionally wound, too much or too little can not, coil wound less, there will be damage to the parts, resulting in parts burned spark, For some do not arbitrarily modify the wireless charging base.
3, vertical wireless charger adopts classic base and support board design, simpleDignified. Product parameters show that it supports dual coil output, moderate size, using PC ABS material. The internal configuration of FCC, CE, ROHS, Prop65 and other certifications to ensure safety and reliability. The smart design of the support board can stabilize the mobile phone, which is convenient to watch TV series or receive information, and improve the user experience.
4, Zikko Apple wireless charger charging method Beijing wireless circuit board : Wireless Zikko Apple wireless charger compared with the common wireless charger on the market, it has a high 10W fast charging, multi-coil withoutAlignment fixed position, all-round charging and other advantages. Equipped with high 10W dual coil wireless transmission power, compared to the common single coil, it does not need to be aligned to a fixed position when charging.
5, in practical applications, I recommend millet wireless charger (20W wireless charging power, double coil design mobile phone can be placed vertically or horizontally) as the first choice, because of its excellent performance in appearance design, charging performance and quality.
FPC is a Flexible Printed CircuThe abbreviation of it, also known as soft circuit board, flexible printed circuit board, flexible circuit board, referred to as soft board or FPC, has the characteristics of high wiring density, light weight and thin thickness. Mainly used in mobile phones, laptops, PDAs, digital cameras, LCM and many other products. FPC flexible printed circuit is a kind of highly reliable and flexible printed circuit made of polyimide or polyester film. In addition, the flexible circuit board also has the characteristics of light weight and thin thickness, which makes it particularly suitable for portable electronic devices, such as mobile phones, laptops, PDAs and digital camerasLet's wait. In these products, the flexible circuit board often adopts SMT technology to ensure the tight fit and stable performance of the component.
In the design and manufacturing process, the use of flexible circuits can simplify the assembly process, reduce the number of parts, and reduce production costs. At the same time, the bendability of flexible circuits makes it possible to achieve complex wiring in a limited space, which is particularly important in some mobile devices or wearable devices. Overall, the economics of flexible circuits are reflected in their flexible adaptability, cost effectiveness, and technical advantages in specific application areas.
Flexible Circuit Board (FL)Due to its flexible characteristics, it is widely used in some specific fields, such as wearable devices, automobiles, medical equipment and so on. Flexible circuit boards can realize more complex design and layout of the circuit in a smaller space, which greatly improves the performance and reliability of the device. In addition, the flexible circuit board also has the advantages of light weight and thin thickness.
Flexible Printed Circuit board, usually referred to as FPC, is a circuit board with unique characteristics. FPC is known for its lightness, thinness, and especially flexibilityThe degree of performance is excellent, can bend easily. It is not a hard board in the traditional sense, but with soft characteristics to provide greater flexibility for the design. The main advantage of FPC is its wide range of applications.
The structure of the flexible circuit board is mainly divided into single-layer board, double-layer board, multi-layer board, double panel, etc., according to the number of conductive copper foil layers. When choosing a flexible circuit board material, the substrate should be based on polyimide, which is a high temperature resistant, high-strength polymer material that can withstand a temperature of 400 degrees Celsius for 10 seconds and has a tensile strength of 15,000-30,000 PSI.
1, for example, for the 6-10 layer of memory module PCB design, the choice of 10/20mil (drill/pad) hole is better, for some high-density small size boards, you can also try to use 8/18Mil hole. Under the current technical conditions, it is difficult to use a smaller size of the hole (when the hole depth exceeds 6 times the diameter of the hole, it is impossible to ensure that the hole wall can be uniformly plated with copper); For power supply or groundThe hole can be considered to use a larger size to reduce the impedance.
2, in the range of ravg 0~ 0.08m, the output power increases first and then decreases with the increase of coil turns; In the range of ravg 0.08~ 0.4m, the output power decreases first and then increases and then decreases with the increase of coil turns. For a fixed operating frequency, the quality factor Q mainly depends on the shape and size of the coil and the material used. Standard coil technologies (such as wire winding coils and PCB coils) generally specify quality factor values.
3. Wireless charging PCBDifferent functions require different components. The required components are: resistor, capacitor, resonant capacitor, resonant coil, MOS tube, control chip, protocol chip.
4, control chip: manage the entire wireless charging process, including voltage regulation, power control, communication and other functions. Power amplifier (PA) : Increases signal strength in order to transmit energy efficiently. Oscillators and modulators: Generate high-frequency AC signals for wireless transmission. Coils: Used to generate or receive electromagnetic fields, are a key part of wireless charging.
5. Electric field coupling technology transmits energy wirelessly, although it canLow efficiency, but most convenient to use. The principle of wireless charging is similar to that of transformer, and the system design refers to the structure of transformer. Wireless charging products are mainly composed of the receiving end and the transmitting end, the transmitting end includes chips, oscillators, power amplifiers, coils, PCB, passive devices, electronic transformers, structural parts, etc., the receiving end is divided into two parts of the chip and module.
6, and 18 requirements must be met. Wireless charging products may have two different modes of operation: charging mode and communication mode. In this case, it is possible to use FCC Part 18 for charging mode and FCC Part for communication mode15, but only if the two modes of charging and communication are independent of each other. If the charging mode complies with all the relevant provisions of Part 15, the FCC allows the charging mode to replace Part 18 with Part 15.