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.
No, increasing the voltage too much or increasing the number of turns will burn the battery, because the more turns you have, the higher the voltageI don't know if your homemade charger is Qi program, if it is Qi, it is not possible, this must be close contact, you have to change to radio wave type, within five meters.
Wireless charging will not accelerate battery aging, will not have radiation to the body. The principle of wireless charging is electromagnetic induction. The charging dock is like an iron core with some primary coils wrapped around it. Cell phones have secondary coils built into them. The primary coil is energized to generate electromagnetic induction, so that the secondary coil generates induction voltage, and generates induction current to charge the mobile phone after loading. So don't worry.
for mobile phonesCharging the device will be more efficient 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.
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 interference, thus reducing the efficiency of wireless charging; And increasing the number of coils requires more coils and associated circuits to be installed in the device, which increases design complexity and cost.
Magnetic resonance charging, the principle is the same as the resonance principle of sound. Coils of the same vibration frequency arranged in a magnetic field can exchange energy with each other. If the coil is large enough, long-distance transmission is also possible, but high efficiency, miniaturization is more difficult.
1, wireless charging coil test good or bad method is as follows: test the resistance value of the coil, resistance value within a certain range is a good product. Test the Q value of the coil, the higher the Q value, the better the performance. Test the temperature rise of the coil, the lower the temperature rise, the sexThe better. 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 windings, one is the main winding, one is the secondary winding, after the secondary winding is damaged, it will leadThe main winding heats up and the output has no voltage.
4, 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.
In summary, Wireless charging coil is good or bad , Keysight E4980A/AL precision LCR table with its high precision, wide impedance range, fast measurement and multi-fixture selection Wireless charging coil is good or bad , Become the ideal choice for wireless charging coils Wireless charging system coil test Wireless charging coils to ensure the high efficiency and high reliability of the system provides strong support.
The resistance value of the inductor under test is zero, and there is a short-circuit fault in it. Inductor under test DCThe size of the resistance value is directly related to the enamelled wire diameter and the number of winding laps of the inductor coil. As long as the resistance value can be measured, the inductor under test can be considered normal. Remarks Wireless charging coil is good or bad : 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.