Is there a problem with the sizzling of the charger?

The sizzling of the charger will hurt the phone, but it may not be**. It is recommended that users should change to a charger.

Chargers (chargers) are divided into power frequency machines and high-frequency machines according to the working frequency of the designed circuit. The power frequency machine is designed based on the principle of traditional analog circuit, and the internal power components of the machine (such as transformers, inductors, capacitors, etc.) are larger, and there is generally less noise when running with a large load, but the model has strong resistance in harsh power grid environmental conditions, and its reliability and stability are stronger than that of high-frequency machines.

Notes: 1) "Vehicle" refers to motor vehicles and non-motor vehicles.

2) "Motor vehicle" refers to a wheeled vehicle that is driven or towed by a power unit and driven on the road for personnel or for transporting goods and carrying out special engineering operations.

3) "Non-motorized vehicle" refers to a vehicle driven by human or animal power on the road.

and motorized wheelchairs and electric bicycles for the disabled that are driven by power units but are designed to meet the relevant national standards in terms of maximum speed, empty mass and dimensions.

and other means of transportation.

If our charger has made an abnormal noise when charging, it means that the electronic components inside our charger have begun to be damaged. In this case, this charger is not recommended to be used anymore, as it may cause unstable output, damage to our mobile phone, and damage our charging equipment.

There are three possible reasons why the charger will emit a continuous sizzling sound:

1. There is a contact resistance between the mobile phone plug and the socket, which is called contact point ignition.

2. There is a magnetic field vibration sound emitted by the silicon steel sheet in the transformer.

3. The problem of the plug-in board may be leaking from the socket, pay attention to safety.

Precautions for mobile phone chargers:

1. It is best to unplug it after charging, because the internal components are also working when they are not charging, and the components will age. After all, components also have a service life.

2. The charger does not pull out the same power consumption The maximum power consumption of the mobile phone charger is 308 milliwatts. The charger is not unplugged on the power socket, although the charger is not connected to the mobile phone, but the circuit board inside the charger is powered on, and it is still in working condition, and it will still consume power.

3. During the frequent use of electricity in the mobile phone charging socket, the magnetic induction intensity within 30 cm around it will reach 1400 milligauss, and the number of immune function cells in the human body may be reduced, which will cause certain damage to the health of the human body.

Hello, dear, I am the Q&A Lord, I received your question, and I am sorting out the answer, please wait, I will reply to you within ten minutes.

Hello, dear, the reason for the charging head ringing: 1. The UBS cable of the charger is aging. 2. The charging head transformer or internal small parts are damaged. 3. The charging head is damaged due to drops, collisions, and temperatures.

Solution: 1. Replace a UBS cable, and then close to the charging head to see if there is still a sound. 2. Go to the mobile phone repair location for inquiry.

It is normal for the charger to make a sizzling sound during operation, because there will be a force on the internal device during charging, and slight vibration is inevitable.

1. The ** of this sound is the high-frequency transformer inside the charger. The mobile phone charger belongs to the parallel switching regulated power supply, and the 220V AC power in the socket is first rectified to 310V DC in the charger.

2. After the transformer is stepped, the secondary winding outputs low voltage, which is output after rectifier filtering. Due to the simplification of the internal circuit of the mobile phone charger, most of them use the LC oscillation circuit to generate the oscillation signal, and the feedback winding of the transformer is a part of the oscillation circuit, so the change of the transformer load will directly affect the oscillation frequency.

3. When the mobile phone is charging, the load is heavier, the output current decreases when it is close to being full, the charger is close to no load, the oscillation frequency will change, if it drops below 20kHz, the human ear will be able to hear, which is a normal phenomenon and does not affect the use.

Precautions for charger use:

Choice of charger.

Users cannot choose a charger that is not available through informal channels or is not original, because it cannot guarantee the safety of the phone and battery.

Charging environment.

Most batteries have a limit range of -20 to 60, and it is not good to go below or above this temperature. It is recommended to charge in an environment of 5-35 as much as possible, and avoid an environment that is too cold or too hot. Although the battery has been tested for high temperature and cold resistance at the factory, it is recommended to charge the phone at room temperature just in case.

Bad usage habits.

If the phone is left empty without power for a long time, it will damage the battery life. When you are not using your phone, you should also charge more than half of the phone to let the phone discharge naturally. In addition, the wifi is never turned off during daily use, and opening too many background apps will make the battery drain quickly, which can be turned off at the appropriate time.

During the operation of the charger, there will be slight vibrations in the internal components, so it will sizzle sound. When the mobile phone is working, it will also produce a weak sound due to the resonance of the capacitor.

There is a transformer in the charger, which is switched in the non-stop switching action, and the transformer will be soaked in some potion to make the coils tightly connected when leaving the factory, and it will not jump up and down to make a sound audible to the human ear when switching at high frequency.

This is relatively normal, and it is generally not dangerous.

Detailed introduction: The phenomenon of the charger emitting a sizzling sound, the official said that this situation is generally caused by the vibration caused by the piezoelectric effect of a device in the charger, and the frequency is relatively high, but this phenomenon has no potential safety hazards.

Regarding the charging frequency, Zimi said that the lithium battery of the mobile phone has no memory, and the life is related to the number of charging and discharging cycles.

Specifically, charging from 0% to 100%, and then consuming from 100% to 0%, is considered a cycle. In normal use, it is rare to consume the power of the mobile phone to 0 and then recharge, so it is less than one cycle, and there is no need to control the charging frequency of the mobile phone when using it.

The sizzling of the mobile phone charger is a normal phenomenon and there is no danger.

The electric grip coil is generally encapsulated by paint sealing, epoxy resin, heat shrinkable tape, etc., and these packaging materials may loosen after a long time, and the coil itself will also be affected by thermal expansion and cold contraction to produce gaps, and it will make a sizzling sound after a long time. The sizzling sound may be due to poor contact with the socket, resulting in an abnormal sizzling sound due to sparks from close contact.

Charger classification

Chargers are divided into power frequency and high frequency according to the working frequency of the design circuit. The power frequency machine is designed based on the traditional analog circuit principle, and the internal power components of the machine (such as transformers, inductors, capacitors, etc.) are larger, and there is generally less noise when the load is large, but the model has strong resistance in the harsh power grid environmental conditions. The reliability and stability are stronger than those of high-frequency machines.

The high-frequency machine uses the microprocessor as the processing control center, which burns the complicated hardware analog circuit into the microprocessor and controls the operation of the UPS by software program. As a result, the volume is greatly reduced, the weight is greatly reduced, the manufacturing cost is low, and the selling price is relatively low.