First of all, you can scrape the charging contact of the bracelet and the charger with a hard object, such as coins, keys, scissors, etc. Secondly, it can be inserted and removed several times to ensure that there is no gap between the bracelet and the charging contact. Finally repayYou can plug in the charger for half an hour in advance to activate the battery of the bracelet.
The specific solution is as follows: insert and remove the bracelet body several times or slightly swing the hand ring body. Then you may use the charger is not suitable, you can go to a special place to sell the charger with a special charger, or look at the charging port of the watch, is there something blocked. It may be that the contact between the magnetic charging head and the charging cable is poor or the interface has been damaged, and a new magnetic charger needs to be updated.
Clean the bracelet charging contact First use a hard object to clean the charging contact on the main side of the Xiaomi bracelet. clearCharger contacts Clean the contact interface in the bracelet charger in the same way. Insert the charger Insert the body of the bracelet into the charger, and pay attention to plug tightly. Connect the other end of the charger to the computer or the AC power supply of the charging plug, and try to charge for half an hour to see whether the charge is successful.
There is no reaction when the bracelet is connected to the charger, or the battery power does not increase but decreases when charging. This may be due to poor contact caused by dust at the junction. Just clean up the interface and the problem can be solved. Low battery The bracelet has not been used for a long time, and the low battery will shut down, and the battery will be fed if it is not charged in time. At this time onlyWhat is the magnetic pole of the iron block after one side of the bar magnet is magnetized? '> What is the magnetic pole of the block of iron after two pieces of iron are magnetized on one side of a bar magnet?
Iron can be magnetized under the action of the external magnetic field, producing a weak magnetic field, according to the principle of same-sex attraction and opposites repulsion, you can judge the magnetic pole properties. As shown in the following figure, the two adjacent surfaces can be understood as attracting surfaces, and the respective magnetic poles can be determined according to the polarity of the magnet.
or the original magnetic pole ~ If it is separated, it is to change, such as a magnet divided into two halves, a two-stage into two four poles. The adjustment method is to adjust the magnetic pole position and changeVariable magnetizing path. Adjust the magnetic pole position: According to the requirements of the direction of magnetization, determine the current direction of the magnetization operation motor, adjust the position of the magnetic pole, change the polarity of the electromagnet, you can change the direction of magnetization. Change the magnetizing path: Add or subtract the magnetic circuit (such as iron sheet) between the electromagnet and the workpiece, you can change the magnetizing path and determine the direction of magnetization. First of all, the motor rotation direction depends on the direction of the magnetic field, the positive and negative poles of the power supply in the motor is used to generate a magnetic field, the general motor to change the positive and negative poles of the power supply will not change the direction of the magnetic field, the direction of the magnetic field is generally determined by the direction of the current, the direction of the current can be changedChange the direction of the magnetic field, thereby changing the direction of the motor rotation. The structure of the magnetometer is relatively simple, in fact, it is a strong magnetic magnet, equipped with a variety of shapes of iron blocks, as an additional pole, in order to form a closed magnetic circuit with the driver head, when magnetized, the additional pole is set up, and the charged magnet, as long as the excitation current is added, the brush can be completed instantly. Degaussers are a little more complicated. The demagnetizer, that is, the demagnetizer, can be divided into pulse demagnetizer and AC demagnetizer. The commutation of a DC motor refers to the direction of the current in the armature winding and the magnetic field of the rotor when the motor rotor is movingCorresponding to the direction, thus changing the magnetic pole polarity of the rotor to achieve the normal operation of the rotor. Commutation is usually achieved using mechanical or electronic commutators. Mechanical commutator: A mechanical commutator is a mechanical switching switch that changes the direction of the current in the armature winding through a rotary switch or a sliding switch. Can the magnetizer change the current direction to change the magnetic pole?