The apple phone makes a noise when charging, why does the apple phone make a sound when it is chargi

The abnormal sound of the charger indicates that there is a fault, and there is a problem with the feedback loop of the circuit, which will generally not affect the normal use of the charger, but will affect the heating and power loss. Use the meter to measure whether the output voltage is normal. Second, if there is a problem with the transformer, it may not affect the use.

After a long time, the silicon steel sheet of the transformer inside is loose, the buzz of the ordinary transformer power supply is 50hz, that is, we often hear the sound inside the household appliances, the quality is not good or the time is long, it will naturally sound, but the charger is mostly a switching power supply, in order to increase efficiency and reduce the volume of high-frequency transformers, so the noise frequency is also very high, and the upper limit of the frequency that different people can hear is not the same, but it must sound uncomfortable, either change the charger or stay away from it, there is no danger.

Summary. Apple rechargeable old ringing causes and solutions:

1. The charging interface located at the bottom of the mobile phone is easy to enter the dust, which will cause poor contact between the interface and the power cord plug.

Solution: Check the interface at the bottom of the phone for foreign objects blocked.

2. The charging cable and power cord are damaged.

Solution: Replace your phone's charging cable and power cable.

3. It may be the system that causes the phone to not be charged. Or it is a matter of temperature, due to the physical characteristics of the battery, it is particularly sensitive to temperature, too high will cause problems, too low will cause it to be unable to charge.

Solution: Put the phone in an air-conditioned room, let the phone be at a normal temperature, and then charge it.

4. Water ingress or falling may cause damage to the internal parts of the mobile phone, so that it cannot be charged.

Solution: Send your phone to an Apple authorized service for testing.

Why does the Apple phone make a sound when charging.

Causes and solutions of Apple's rechargeable ringing: 1. The charging interface located at the bottom of the mobile phone is easy to enter the dust, which in turn causes poor contact between the interface and the power cord plug. Workaround:

Check the connector on the bottom of the phone for foreign objects blocking it. 2. The charging cable and power cord are damaged. Workaround:

Replace your phone's charging cable and power cord. 3. It may be the system that causes the phone to not be charged. Or it is a matter of temperature, due to the physical characteristics of the battery, it is particularly sensitive to temperature, too high will cause problems, too low will cause it to be unable to charge.

Solution: Put the phone in an air-conditioned room, let the phone be at a normal temperature, and then charge it. 4. Water ingress or falling may cause damage to the internal parts of the mobile phone, so that it cannot be charged.

Solution: Send your phone to an Apple authorized service for testing.

There are only a few possibilities.

Summary. Kiss, it is caused by the high-frequency transformer inside the mobile phone charging head.

In order to reduce the size of the charging head, a high-frequency transformer is used to reduce it to low-voltage DC to charge the mobile phone. Usually, the 220V AC is rectified into high-voltage DC first, then vibrated into high-frequency AC through the frequency switch, and finally becomes low-voltage DC through the high-frequency transformer. <>

There is a sizzling sound when the Apple charger is charging.

Kiss, it is caused by the high-frequency transformer inside the charging head of the rolling core ant mobile phone. In order to reduce the volume of the charging head, a high-frequency transformer is used to reduce it to low-voltage DC to charge the large buried machine. Usually, the 220V AC bend is rectified into high-voltage DC, then vibrated into high-frequency AC through the frequency switch, and finally passed through the high-frequency transformer to become low-voltage DC.

The sound of this source will change with the current, the larger the output current, the stronger the sound, and the sound is almost inaudible. Usually we use fast charging to charge the auspicious crack, the natural output current is also large, and it is quite <>normal to have a sizzling sound

<> kiss, if you can't get used to the sound or the charging head has been used for a few years, you might as well change it to a new <> I hope it can help you <>

The reason why the iPhone will make a lot of beeps when charging is because the charging tone is set, and the function can be used as follows:

First, we enter the main page of the iPhone and click to enter the shortcut.

Second, in the main page of the shortcut, we click to enter the automation option in the bottom function bar.

3. In the main page of automation, we click to create a personal automation.

Fourth, in this page we scroll down to the bottom. Select the Enter battery level option.

<>6. On this page, we click on the Add Action option.

8. At this time, enter and add the custom content that needs to be notified. Tap the plus sign when you're done typing.

<> ten. 1. At this time, you can see that when the battery level is 100, there will be a notification and voice reading, click Finish.

First, the cause of the failure:

1. The boot cable is not normal and the boot is not turned on.

Under normal circumstances, when pressing the power button, the trigger terminal voltage of the power button should change significantly, if there is no change, it is generally due to poor contact of the power button or the power line is broken, the component is soldered, and damaged. When repairing, use an external power supply to supply power, observe the change of the ammeter, if the ammeter does not respond, it is generally a disconnection of the power line or a bad power button.

2. The battery power supply circuit is not turned on due to poor operation.

For most mobile phones, after the mobile phone is added to the battery or external power supply, the power supply voltage is directly added to the power supply worker C, if the power supply voltage is not added to the power supply IC, the mobile phone cannot be turned on.

In other words, there are two paths to the power supply of the mobile phone, one is battery power; The other is powered by an external interface (when powered by a charging dock). When two power supplies are supplied at the same time, the external interface is given priority. The switching of these two power supplies is controlled by the electronic switch tube, which mainly protects the current of the whole machine and prevents damage to the integrated circuit inside the mobile phone due to short circuit or leakage.

However, if the electronic switch is damaged, the source module may not get the power supply voltage of the battery, causing the mobile phone not to turn on. For this kind of mobile phone powered by electronic switches, it can be powered by an external power supply interface, or it can be powered by an external power supply through the battery contacts.

During maintenance, the power supply can be provided by different power supply methods in order to distinguish the fault range and determine whether the electronic switch is normal. Generally speaking, if the power supply circuit is bad, pressing the power button ammeter will not respond, which is very similar to the bad power line.

2. Solution:

1. Use a data cable.

When the phone is depleted, it will automatically enter the sleep state, and then it is difficult to turn on, it is recommended to connect the phone with the computer with a data cable at this time, and charge the computer for 30 minutes to help activate.

2. Press the button to restart.

If you use it for too long, the system of the mobile phone will become unstable, resulting in the inability to turn on, it is recommended to press and hold the volume down button and the power button at the same time, the mobile phone will automatically restore the factory settings after eight seconds, and then restart it.

3. Replace the battery.

If the battery is removable, you can remove it and put it back on again to see if it can't be turned on because of poor contact, or you can try to replace it with a spare battery.

4. Increase the temperature.

For outdoor adventurers, if you are in a low temperature environment, the mobile phone will easily fail to turn on, it is recommended to hold it in your hand or put it in your underwear for half an hour at this time, and then it can be turned on normally.

5. Send it for maintenance.

When there is a problem with the hardware inside the mobile phone, it will also lead to the inability to turn on, at this time, you can only go to the repair shop to find professional personnel for repair, do not disassemble yourself, so as not to make the mobile phone completely scrapped.

This is a leakage phenomenon of the charger, and it is recommended to replace the charger.

In order to reduce the interference of the power grid, the switching power supply is generally designed with 1-4 small capacitors of 1000p at the high and low voltage terminations to reduce the interference of the switching power supply to the power grid or the power grid to the electromagnetic interference of the power supply to the low-voltage power supply equipment. It is precisely because of the existence of this capacitor that the current leakage of 220V AC power supply to the low voltage end is caused, that is, the leakage phenomenon.

However, the leakage current of the charger is limited, so it generally does not cause an electric shock accident, but it will cause an electric shock feeling, and there will be a numb feeling when the hand touches. So it's best to replace the charger.