1, coil diameter about 100 mm, wire diameter about 0.5 mm.
2, wireless charger refers to the charger that does not need to be connected to the terminal device that needs to be charged without the traditional charging power cord, using the latest wireless charging technology, through the use of the magnetic field generated between the coils, the magic transmission of electrical energy, inductive coupling technology will become a bridge connecting the charging base station and equipment.
3, for wireless charging of Apple mobile phone, you first need to buy an Apple wireless charger; The iPhone11 itself has a wireless charging function, which does not need to be manually turned on, onlyNeed to connect the wireless charger plug and strip power; Point the iPhone11 back down at the wireless charger; Charge your phone by placing it on a wireless charger; To make the best charging effect, choose the location as the best center.
4. It is measured that the line diameter of the air-core coupling coil of the parallel resonant loop formed by the capacitor is O.5 mm, the diameter is 7 cm, the inductance is 47 uH, and the carrier frequency is 2 MHz. According to the parallel resonance formula, the matching capacitance C is about 140 pF. Therefore. The transmitter uses a 2MHz active crystal oscillator to generate a power carrier frequency close to the resonant frequency.
5, in the case of a certain effective value of the current, the pole heating is normal 2, inductance saturation, this heating is also very common.3, the inductance has a large oscillation voltage at both ends. The magnetic core is larger, which can reduce the number of turns and shorten the length of the line. The positive shock change, the ripple current is small, the magnetic loss is small, mainly the resistance thermal check filter capacitor, and the capacitor failure will cause the inductance to overheat and discolor.
6, you are normal no-load voltage and low load voltage. The no-load voltage is normal, indicating that your wireless charging transceiver circuit is normal, but the voltage is pulled down after the load, and the biggest may be that your coil matching is not goodCoil is good or 3 coil is good '> Wireless charger single coil is good or 3 coil is good
1, electric field coupling wireless charging Wireless charging coil recommended , do not use the coil for electromagnetic induction Wireless charging coil recommended , but directly through the charging base and the capacitor formed between the electrical appliances to be charged in the high-frequency electric field, That is, the power is transmitted by the induced electric field generated by coupling two sets of asymmetric dipoles in the vertical direction. This charging method has the advantages of low cost and low alignment requirements. But there are not many actual products.
2, the number of wireless charging coils is based on the number and size of the charging device to be charged. In theory, the more coils there are, the more efficiently the device can be charged, because the device can receive the charge at any location. However, if the number of coils is too large, it will increase the cost and volume, which is not practical or economical. Therefore, the appropriate number of coils should be selected according to different charging needs.
3. No. Each wireless charging coil will have a certain amount of energy loss, increasing the number of coils will lead to a decrease in the overall charging efficiency, more coils will increase the energy loss and mutual interferenceAnd reduce the efficiency of wireless charging Wireless charging coil recommended ; And increasing the number of coils requires more coils and associated circuits to be installed in the device, which increases design complexity and cost.
2, electromagnetic induction wireless charging, when the current of the power supply through the coil (wireless charger transmission coil) will generate a magnetic field, the wireless charging coil recommended he is not powered on the coil (the mobile phone is poweredProximity to the magnetic field generates an electric current that charges the phone. The advantages of wireless charging safety: no power contact design, can avoid the danger of electric shock.
3, electric field coupling wireless charging, does not use the coil for electromagnetic induction, but directly through the capacitor formed between the charging base and the electrical device to be charged in the high frequency electric field, that is, the use of the induction electric field generated by coupling two sets of asymmetric dipoles along the vertical direction to transmit power, this charging method has the advantages of low cost and low alignment requirements. But there are not many actual products.
4, there are five principles of wireless charging: electromagnetic induction, magneticField resonance type, radio wave type, focused light type, ultrasonic wireless charging type, etc. Electromagnetic induction A certain frequency of alternating current in the primary coil generates a certain current in the secondary coil through electromagnetic induction, thereby transferring energy from the transmission end to the receiving end.
5, wireless charger is the use of electromagnetic induction principle of charging equipment, its principle and transformer similar, through the sending and receiving end of each placed a coil, the sending end of the coil under the action of power to the outside electromagnetic signal, the receiving end of the coil received electromagnetic signal and electromagnetic signal into the current, so as to achieve the purpose of wireless charging.
6, the wireless charger sent the circle is the wireless charger charging receiver. It is placed on the back of a phone or other device that supports wireless charging to receive the power transmitted by the wireless charger. The circle is actually a coil that transmits power to the device's battery via a bus bar.
Vertical wireless charger adopts classic base and support board design, simple and dignified. Product parameters display,It supports dual coil output, is moderate in size, and uses 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.
Rigorous quality assurance After FCC, ETL and other authoritative certification, the quality of Pengyuansheng charger has been fully guaranteed. Its simple design, compared with Apple 30W charger, is more lightweight, does not take up space, showing a high sense of design. The dismantling process revealed its inner secrets, using the South Core SC3021D main control chip, this high-frequency QR architecture of the chip, the characteristics of high cost performance let people shine.
Purple meter wireless charging treasure WPB100 Comprehensive score: 93 points Purple meter wireless charging treasure WPB100 wireless charging treasure is metal material, the weight is slightly heavier, heavy, feel the work is very solid. Its charging interface is configured with a USB charging port, a type-c charging port, a lighting charging port, wired charging to support 18W fast charging. With 10W wireless charging, it can support up to three mobile phones charging at the same time.
After disassembly, the charger adopts the high-frequency QR switching power supply architecture, and the core components include the SC3021D and SC3503 controllers of Nancore, as well as the Innosec INN650DA04 gallium nitride power tube, which ensures high efficiency and stability. In terms of electrolytic capacitors, the products of Yongming and Acon are selected to ensure the filtering performance. Protocol chip selected cloud silicon semiconductor XPD737, integrate a variety of fast charge protocols, improve user experience.