The magsafe charging case has an extra magnetic device inside the wireless charging case, which can be attached to the magsafe charger. In addition to supporting wireless charging and lightning interface charging, the magsafe charging case also supports magsafe charger charging. magsafe charger is a wireless charging technology launched by Apple Inc. magsafe improves the charging efficiency to 15W while maintaining compatibility with Qi charging, and at the same time, it also interconnects with many magnetic accessories of the iPhone.
The main difference is the design principle of the magsafe charging case and the wireless charging case. The magsafe charging case is characterized by its unique internal magnetic device, so that it can be directly attached to the magsafe charger, providing a more convenient way to charge. It not only supports wireless charging and lightning interface charging, but also supports the special charging of the magsafe charger, which makes it more functional.
1, an iPhone wireless charging connectorAccept the card. Wireless charging receiving card a compatible charger. A non-metal flexible ultra-thin casing.
2, open the back cover of the smartphone, and then take out the wireless charging receiver ready; Or the protective layer of double-sided tape peel; The next task is to connect the receiver's metal shock to the smartphone battery, which is the most difficult part of the process. However, as long as you are careful to ensure that each metal shock is connected together, it can be done.
3, one of the self-wound coil is connected to the charging circuit, 555 output pin (the third pin) is connected to an output tube (oneself withMeaning, but to the high-frequency power tube) the output tube is linked to the self-winding coil, and the connected two coils are close (about 1 cm or so there is a very sufficient charging current). The efficiency of this circuit is very low, because there is only half a wave peak high frequency so the loss is relatively large, but the principle is quite simple and easy to produce.
4, single-phase bridge rectifier circuit, if there is no filter capacitor, the output voltage is 0.9 times of the AC input voltage when the load is open, that is: U output =0.9*U input. Under load, the formula remains the same: U output =0.9*U input.This conclusion is applicable to both bridge and full wave rectifier circuits. Half wave rectifier circuit: U output =0.45*U input.
5, the working principle of the wireless charger is a power supply through a high-frequency oscillator, high-frequency power amplifier, through a coil to emit electromagnetic signals, the other side of the induction coil to receive electromagnetic signals, after the rectification output high enough voltage, output large enough current value, to charge the battery.
1,TPE can be coated with a variety of materials, such as PP, PE, POM, PETG, TR90, PAPA630%PA6, etc., strong shooting adhesion, high peel strength, compared with other materials, easier processing. The TPE coated wireless charger shell is comfortable to touch, not easy to wear, water and oil resistant, and can be wiped with wet wipes/alcohol tablets.
2, hello, about whether magnets will be used in the wireless charger. First of all, you must understand the principle of wireless charging, that is, electromagnetic induction, through the constant change of the magnetic flux between the two coils, to transfer energy, and electromagnetic inductionIn order to make the coil magnet more concentrated, the core of these materials with large permeability is usually used to reduce energy loss, therefore, the wireless charger does not need to use magnets.
3, involving the plastic part, for safety reasons, must be added flame retardant materials. Because the failure of electronic components in electrical appliances is a more common thing, once a fire, endangering the safety of personal property. Now, to be on the safe side, it is recommended to use at least 94V-0 fire rating. The higher the grade, the more expensive the material, and now the power supply industry is too messy, some manufacturers in order to save costs, the shell material is not fireproof, a little bottom lineNot really.
4, wireless charging will bring some changes to the look of the iPhone, because the metal will affect the magnetoelectric signal. Wireless charging is not what advanced technology, Samsung Galaxy and Google Nexus series of mobile phones used this technology years ago, although it has the problem of slow charging, but no connection is also obvious; As far as iPhone products are concerned, no one knows whether wireless chargers will become standard on the new iPhone.
5, all coil winding is enamelled wire. If it's not enamelled, it shorts out. Enamelled wire is generally selected