This circuit production is generally the use of pulse, to prevent coil overheating and short circuit at the power end need to use temperature detection and current detection and then real-time control of the pulse, of course, but also to protect the circuit.
Control chip: manages the entire wireless charging process, including voltage regulation, power control, communication and other functions. Power amplifier (PA) : Increases signal strength in order to transmit energy efficiently. Oscillators and modulators: Generate high-frequency AC signals for wireless transmission. Coil: Used to generate or receive electromagnetic fields, is wireless chargingThe key part of electricity.
Short circuit between the live wire and the protection wire. Disconnect the main gate, break the protection line into the household, and measure whether the fire line and the protection line of each socket are blocked with the 10,000 meter R*100. If it works, prove that the firewire is short circuited with the protection wire, open each socket one by one to find.
There is an induction coil in the small column and electricity, there is an induction coil in the electric toothbrush insertion part, and there is plastic insulation outside, there is no electrical contact, and the induction obtains electric energy to charge the battery and drive the small motor. Like the widely used transportation card, the coil in the card reader generates electricity to drive the chip in the cardTo refresh the chip information. The difference between the two is that the former requires a battery to accumulate electricity, while the latter only needs instant electricity and does not require a battery.
The steps are as follows: First connect the USB data cable to the mobile phone to make wireless charging coil end with scissors or knife cut the to make wireless charging coil , and then make the long to make wireless charging coil 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 cause the main winding to heat, and the output has no voltage. You have normal no-load voltage and low on-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, the most likely is that your coil matching is not good, resulting in insufficient power received by the output endThis will pull down the charging voltage. 1, all making wireless charging coil coil winding is enameled wire. If it's not enamelled, it shorts out. Enamelled wire generally selects wire to make wireless charging coil diameter is alsoIt's the thickness. 2, problem four: How to make mobile phone wireless charger All make wireless charging coil 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. 3, first prepare three Dongdong: one is the United States wireless coil production of wireless charging coil , one is the United States wireless charger also known as wireless energy disc production of wireless charging coil , two lacquer bagsMoney. To do a modification requires a certain amount of hands-on ability and hands-on equipment, such as: multimeter, electric soldering iron and solder. 4, wrap the enameled wire around the prepared cylindrical body object, the number of turns wrapped according to the formula of electromagnetism calculation, take off the wound coil with absolute glue fixed, 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. Yes. The steps are as followsFirst of all, according to the needs of the circuit, select the winding method: First of all, determine the size of the inner diameter. Then according to the inductance value and resistance and other factors to determine the coil layer number, height, outside diameter and so on. Wireless charging coil is suitable for short wave, medium wave circuit, its Q value can reach 150-250, and has high stability. 2, can not, excessive increase in voltage or increase the number of turns will burn the battery, because the more you turn the higher the voltage, I do not know whether your self-made 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 metersEither way. 3, sometimes the iPhone protective case is too thick will also lead to wireless charging, then you can try to remove the iPhone protective case, and then put back on the wireless charging board to charge. 4, according to the positive and negative connection. How the wireless charging coil is wound, placed and how to control the charging power, the use of electromagnetic mutual induction phenomenon, through the magnetic field coupling of the two coils can complete the transmission of electric energy. Below, we discuss how to efficiently complete the transmission of electricity. This involves how the coil is wound, placed and how to control the charging power. Wireless charger refers to the use of electromagnetic wave senseA device that should be charged by principle is similar to a transformer. 5, will not affect the use, but will affect charging. Wireless charging technology comes from radio energy transmission technology, which can be divided into two ways: low-power wireless charging and high-power wireless charging. Electromagnetic induction is often used for low-power wireless charging. High-power wireless charging usually adopts a resonant mode by the power supply device (charger) to transmit energy to the electrical device, which uses the received energy to charge the battery, and at the same time for its own operation. 6, mobile phones, MP3 players, power tools and other power adapters wired chargeThe electricity situation will not exist. 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, and uses the latest wireless charging technology. By using alternating magnetic fields generated between coils to transmit electrical energy, inductive coupling technology will act as a bridge between charging base stations and devices. 1, an iPhone wireless charging receiver card. Wireless charging receiving card a compatible charger. A non-metal flexible ultra-thin casing. 2The method of making a wireless charger is as follows: Attach the module to the place where the MicroUSB interface is compared. Connect the MicroUSB or Lightning port on the module to your phone. If there is double-sided tape on the receiver, you can glue it directly to the back of the phone. If it doesn't come with it, you have to figure it out yourself. Choose the most suitable position, be careful not to let the part of the connection line have the phenomenon of warping. 3, soldering iron, copper wire, resistor, transistor, capacitor. That will do. So wireless charging is simple. But I suggest you don't do it yourself. It's all special materials. Such asIf you do it for fun, just do a concussion circuit. 4, one of the self-wound coil connected in the charging circuit, 555 output foot (third foot) with an output tube (at your own will, but to high frequency power tube) output tube link self-wound coil, will be connected to the two coils close (about 1 cm or so there is a very sufficient charging current) power can be wireless charged! 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. 5, Yes, but not too long. Too long affects the integrity of the machineBody properties. What materials do mobile phone wireless chargers need to make, is the wire of the coil enameled wire, what model is it?
Wireless charger coil line short can be extended
How to make wireless charger