1, is there a wireless charging mobile power supply in China? Of course there is, for you to recommend a few better wireless charging brands.
2, there is no two-way wireless charging mobile power? Today, I introduce to you several wireless charging banks that support fast charging, which are relatively hot brands on the Internet.
3, the good cost performance of the charging treasure is Romanshi sense6 20000 MA large capacity mobile power supply, millet mobile power supply, Romanshi 2000About 0mm, the diameter of the charger end is about 46 to 48mm, which may vary due to different phone models, but the best transmission method is that the phone end and the charging end coil are the same size.
Wireless charging coil shape and transmission distance Introduction: Wireless charging transmit and receive coil distance of about 8mm. The QI standard is not just the distance between the two, but the frequency and communication protocol of the two wireless charging standards. This distance is a maximum distance, beyond which the efficiency of wireless reception is very low. So it doesn't have to be 8mm.
is in ravgIn the range of 0~0.08 m, 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.
Coil diameter about 100 mm, wire diameter about 0.5 mm.
.85 euros. According to the query X technology,Wireless charging coil internal resistance 0.85 euros, wireless charging technology from radio energy transmission technology, can be divided into low-power wireless charging and high-power wireless charging two ways, low-power wireless charging often uses electromagnetic induction.
All coil winding is enamelled wire. If it's not enamelled, it shorts out. Enamelled wire oneGenerally, the diameter of the selected line is the thickness.
Enamelled wire good. Due to the skin effect of the high-frequency signal in the wire, which means that the high-frequency current in the wire will converge to the surface of the wire, the wireless charging coil generally uses a multi-strand enamelled wire to reduce the impedance.
Problem four: How to make mobile phone wireless charger All the coil winding is enameled wire. If it's not enamelled, it shorts out. Enamelled wire generally selects the diameter of the line, which is the thickness.
The working principle of the wireless charger is that a power supply passes through a high-frequency oscillator, a high-frequency power amplifier, and emits electromagnetic through a coilSignal, the other side of the induction coil receives the electromagnetic signal, after the rectification output high enough voltage, output sufficient current value, to charge the battery.
Wrap the enameled wire around the prepared cylindrical shape object, the number of turns wrapped according to the formula of electromagnetism, remove the wound coil and fix it with absolute glue, leaving the head and tail in the knife to scrape off the enameled wire head and tail paint to leave copper wire. Drill a hole in the bamboo section as large as the USP data cable.
1,And especially for Apple users, it is definitely a good product, because it supports the Lightning interface, and there is a charging bank with wireless charging function, which is also a purple rice wireless charging bank. Mophie wireless charging board The Mophie wireless charging board power cable is not pluggable, its design is relatively simple, with transformer, power output: 19V/3A, support 5W fast wireless charging upgrade, charging capacity within 30 minutes is 21%.
2, Lisong wireless charging treasure, Pinsheng PISEN charging treasure, Yubo YB-20W charging treasure, Mi chargingThe five brands of electric power Bank and Nineka Wireless Power Bank are the best. The battery capacity is large, and the safety is very high, simple and small and easy to carry, the following are specific to introduce.
3, product features: The wireless charging area of this wireless charging treasure of Rome Shi has 4 arc anti-slip prominent structure, and the mobile phone that supports wireless charging can be charged directly on the top without worrying about the mobile phone sliding. This wireless charging bank adopts 1A output port for wireless charging, and 1A output port for wired charging. The differential power output design can make the power distribution of the charging bank more reasonable.
5, charge treasure south card brand of good quality. The light gray design of the South Carolina POW-2 wireless charging treasure is still quite popular in the current minimalist appearance style.