1, vertical wireless charger adopts classic base and support board design, simple and dignified. 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.
2, purple meter wireless charging treasure WPB100 comprehensive score: 93 points purple meter wireless chargingThe whole body of the WPB100 wireless charging treasure is made of metal, the weight is slightly heavier, heavy, and it feels 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.
3, rigorous quality assurance After FCC, ETL and other authoritative certification, the quality of Pengyuansheng charger has been fully guaranteed. Its simple exterior design, compared with Apple 30W charger, is moreAdd light, does not take up space, showing a high sense of design. The dismantling process reveals its internal secrets, using the South core SC3021D master chip, this high-frequency QR architecture chip, the characteristics of high cost performance is impressive. 4, after disassembly, the charger adopts high-frequency QR switching power supply architecture, the core components include south core SC3021D and SC3503 controllers, and Innosec INN650DA04 gallium nitride power tube, to ensure high efficiency and stability. In terms of electrolytic capacitors, the products of Yongming and Acon are selected to ensure the filtering performance. Protocol coreElectric coil test good or bad '> Wireless charging coil test good or bad
1, the wireless charging coil test is good or bad Wireless charging coil test The method is as follows wireless charging coil test : The resistance value of the test coil Wireless charging coil test , the resistance value is a good product within a certain range. Test coil Q value Wireless charging coil test , the higher the Q value Wireless charging coil test The better the performance. Test the coil temperature rise, the lower the temperature rise, the better the performance. Test the efficiency of the coil, the higher the efficiency, the better the performance.
2, wide impedance range, to meet a variety of needs of the inductance of the wireless charging coil is usually at the micro hen level, the test frequency is in the kHz range, which requires a wide and accurate measurement range. The E4980A/AL has a wide impedance range from 4 milliohm to 100 milliohm, and can cover this band with 10% accuracy, making it particularly suitable for the precise evaluation of wireless charging coils.
3, the secondary winding is broken, the wireless charging coil has two winding, one is the main windingGroup, one is the secondary winding, after the secondary winding is damaged, it will cause the main winding to heat, and the output has no voltage.
1, wireless charging coil test coil capacitance to the ground because the capacitor is the electric field energy and magnetic field energy conversion material, in the process of wireless charging, electric field energy and magnetic field energy need to be converted. The process of wireless charging is the transmission of electric energy from the charging device to the receiving device.
2, because the circuit is inThe resonant state, even if the receiving coil is not near the transmitting coil, the no-load current is very small. At the receiving end, the resonance principle is also used to improve the efficiency of energy transmission. Schottky diode is used to rectify the signal, after filtering capacitor processing, to obtain direct current, and then charge the battery. In the best working condition, the charging current can reach more than 0.6A.
3, the use of magnetic resonance in the air between the charger and the device to transfer charge, then the coil and capacitor form a resonance between the charger and the device to achieve efficient transmission. Electromagnetic induction wireless charging technology wireless charging technology for this set of systemsThe defect is more obvious, the magnetic field will decay rapidly with the increase of distance, and the energy exceeds the divergence around, so the induced current is far less than the input current, so the energy utilization rate is not high.
4, the resonant frequency of inductor L1 and capacitor C1 is 1MHz, because the circuit is resonant, so when the receiving coil is not close to the transmitting coil, the no-load current is very small. The receiving end also adopts the mode of resonance, which can maximize the transmission efficiency of energy, and the direct current is obtained by the filtered capacitor after the Schottky diode is rectified, and the charging current is above 0.6A. If lineThe circle is made into a barrel shape, and the transmission efficiency is higher.
2, the resistance value of the inductor to be measured is zero, and there is a short-circuit fault inside. The size of the DC resistance value of the inductor under test is directly related to the enamelled wire diameter and the number of coils wound. As long as the resistance value can be measured, it can be considered that the inductor under test is normal. Note Wireless charging coil test : If you need to determine accurate inductance and resistance values, please use special inductance testing instruments such as: impedance tester, LCR tester, digital bridge, etc.