There will be an occasional electric current sound, how to break? 50

How to eliminate the current sound of headphones.

Usually, when there is a "stabbing and lala" sound in the speaker, it is a common current sound fault. This can be solved by the following methods.

1. Check whether the [Audio Cable] interface is plugged in correctly, and connect with the green audio interface of the computer through the [Audio Cable], and the pink interface in the sound card panel is usually used to connect the microphone, if the wrong speaker is connected, it will also emit a faint current sound.

2. Check whether the power supply is correct, through the case the audio equipment is marked with the rated voltage, too high the power supply voltage will cause the current sound inside the audio. If necessary, a voltage regulator can be used for power supply or voltage stabilization through electrical equipment.

3. The noise phenomenon such as "power supply" in some speakers is caused by improper software settings. In this regard, we can take the following methods to solve it: open the "Control Panel", click on the "Sound and Audio" - >Manage Audio Devices" item to enter.

4. Electromagnetic interference will also cause the sound of electric current to be emitted by the audio, so keeping the mobile phone, microwave oven and other equipment that is prone to electromagnetic away from the sound can effectively prevent the generation of current sound.

6. Switch to the "Enhance" tab in the window that opens, then tick "Disable All Sound Effects", and finally click the "OK" button to complete the setting.

7. If the above methods cannot solve the problem, then there may be a failure of the audio hardware itself, and it can only be sent to the maintenance point for maintenance.

The sound of electricity is soundSpeakersThe "sizzle" sound heard in is the audio current (noise) sound。Place the volume potentiometer.

If there is a "hum" sound, it is the change of the capacity of the electrolytic capacitor of the filter circuit of the power amplifier, or the capacity is too small, if the sound is turned on loudly, there is a big "hum" sound, it is caused by the poor shielding of the audio input of the power amplifier, check and eliminate the shielding fault, so that the shield wire is well grounded.

The cause of the sound of the current

In electrical equipment, current sound is generally emitted by the transformer core or magnetic core, ** is the high oscillation frequency in the low frequency, the low oscillation frequency of the high-frequency circuit, or the magnetic core or silicon steel sheet.

Caused by loosening. The audio circuit is a large magnetic leakage from the core, and the shielding can be strengthened. Inside the transformer there is an inductor, which is just a magnetic element – an electromagnet.

It is a piece of iron with a ring of wire wrapped around it, and there are sensors inside each transformer.

The microphone speaks with an electric current sound, what should we do? One trick to solve!

The sound of an electric current in the audio is usually found in devices powered by AC power, and the presence of an AC sound is usually associated with poor signal grounding (0-level connection).

The AC power supply is converted into DC through the transformer rectification and sent to the line for power supply, from the audio input to the audio output, the 0 level end of the audio transmission line must have a good common grounding wire, so that the AC interference signal "into the ground".

If the internal 0 level is poorly connected, the 0 level signal will fluctuate, and the current sound will appear after superimposing with the audio signal.

1. In the operation of using audio equipment, it is often caused by incomplete contact of the connector (audio plug), when the current sound appears, twist the crimping connector one by one to see if the current sound disappears.

2. If the connection cannot be solved by screwing each connector, it is possible that the anti-interference shielding layer of the audio cable is poorly connected, try to change the wire.

3. If there is a defect in the wiring from the internal rectifier power supply to the circuit board of the equipment, if it is a two-eye AC plug, plug it in after the two pins are swapped and try it.

4. If the above cannot be solved, send it to a professional for maintenance.

5. If it is a continuous sizzling sound instead of an intermittent current sound, it means that the audio input signal is too small.

There are many factors caused by current sound, first check whether the connector has poor contact, you can dial it down, judge whether it is caused by the machine or the machine, generally the former is the majority.