We have electric light tubes in our homes, what s the deal with the buzzing sound when you turn it o

Household electric light tubes, called fluorescent lamps, are also known as fluorescent lamps. The buzzing sound when turned on is due to the large starting current generated when the light is turned on, which causes the core of the ballast to vibrate and produce a sound.

A fluorescent lamp is a low-pressure mercury lamp in which a light circuit is connected in series with a starter and a ballast. When turning on the fluorescent lamp switch, the first is to electrify the filament at both ends, because the resistance of the filament is very small, through a larger starting current, the current is an alternating current with a frequency of 50 Hz, if the core lamination of the ballast is slightly loose, it will produce a mechanical vibration of 50 cycles per second, thus emitting a 50 Hz buzzing sound, until the starter is disconnected, the filament current is cut off, and the hum stops. At the same time, at the moment when the starter is disconnected, the magnetic field of the ballast produces a sudden change, resulting in an induced high voltage, which excites the lamp to produce an arc and conducts light.

At this time, due to the large impedance of the lamp and the small current, the vibration sound of the ballast will become smaller, or even inaudible.

As the fluorescent lamp is used for a long time, the core lamination of the ballast may be loose, or the fastening screws that hold the ballast loose, so it is easy to produce vibration sound. The solution is to retighten the screws, soak the ballast in insulating paint and dry it, or simply replace it with a new one.

1) It may be that your lamp has poor contact with the interface (2) It may be that your lamp has a certain history (3) The voltage is unstable.

Summary. It may be a problem with the power supply circuit of the lamp, this lamp generally uses the power supply to power the LED, if the ** transformer in the power supply is not working properly, or there is a current passing through the power supply after the power supply is turned off, the AC sound will make a sound, you can change a power supply to try. Hope it helps.

The LED lights at home are always buzzing after they are turned off, what is the reason for this?

It may be a problem with the power supply circuit of the lamp, this lamp generally uses the power supply to power the LED, if the ** transformer in the power supply is not working properly, or there is a current passing through the power supply after the power supply is turned off, the AC sound will make a sound, you can change a power supply to try. Hope it helps.

It may be a problem with the power supply circuit of the lamp, this lamp generally uses the power supply to power the LED, if the ** transformer in the power supply is not working properly, or there is a current passing through the power supply after the power supply is turned off, the AC sound will make a sound, you can change a power supply to try. Hope it helps.

Summary. Hello dear! We're happy to answer for you!

In this case, there is a buzzing sound after turning off the light, indicating that there is still a current in the LED light after turning off the light, which is likely to be caused by poor contact, you can find a person who sells the lamp to overhaul it, if not, such a buzzing sound will affect sleep very much, and your lack of sleep will also affect your work and life. It is recommended that you directly change the light to solve this situation.

The LED lights in the bedroom are always buzzing after they are turned off, what's going on?

Hello dear! We're happy to answer for you! In this case, there is a buzzing sound after turning off the light, indicating that there is still a current in the LED light after turning off the light, which is likely to be caused by poor contact, you can find a person who sells the lamp to overhaul it, if not, such a buzzing sound will affect sleep very much, and your lack of sleep will also affect your work and life.

It is recommended that you directly change the light to solve this situation.

Hello dear! We're happy to answer for you! In this case, there is a buzzing sound after turning off the light, indicating that there is still a current in the LED light after turning off the light, which is likely to be caused by poor contact, you can find a person who sells the lamp to overhaul it, if not, such a buzzing sound will affect sleep very much, and your lack of sleep will also affect your work and life.

It is recommended that you directly change the light to solve the situation.

Hello dear! This is a loosening of the silicon steel sheet of the ballast. Workaround:

Remove the ballast. Re-soak the insulating varnish, dry it and put it back on without sound. This can also be caused by the switch not controlling the live wire.

Because the switch cuts off the zero line, the lamp line is still live, and the induction or slight leakage makes the fluorescent tube glow at both ends, and the whole lamp will have a slight flash in serious cases. The only solution to this problem is to switch the live wire. You can refer to it to see what the cause is, check it out, and solve it.

As soon as the lights are turned on, the tubes go off on the road. Are these sounds annoying and unsafe? Let's tell you that the lights are in**?

Especially in rural areas or small cities with poor economy, poor wire contact, aging lines, insufficient power supply, and too far away from low-voltage power supply will lead to low voltage and make the sunlight lamp unable to start normally. 2. Ignitor problem. The ignition device itself is of poor quality or aging, which makes the ignition voltage abnormal, resulting in the sunlight lamp not being able to start normally.

3. Lamp problem. The lamp itself is of poor quality, starting voltage or working. The base of the actuator is in poor contact, and the contact piece in the socket is not in good contact.

The 4 feet at both ends of the fluorescent lamp are not in good contact. Whether it is connected or not depends on whether the light stand is an old ballast or a new type of electronics. The general old ballast has a slight short circuit inside it, which is a capacitance error for the transistor transistor.

If you want to do it yourself, you can remove the ballast, take the shell apart, find a bit of asphalt (aka asphalt), pour it on the core, cool it down and install it again. 2. Change the ballast. The reason why the LED lights are very loud is because the current consumption of the LED lights is very low, and the influence of the line can be basically ignored.

This kind of lamp is generally powered by LED by switching power supply. If the ** transformer in the power supply does not respond often, it will make a sound, and you can change it to the power supply. Double-click the small speaker icon 2 and mute the last one to see if there is any noise3

The difference between energy-saving lamps and fluorescent lamps5

Summary. If the lamp is an LED lamp, it will be equipped with a driver circuit, called a driver, and the main role of the driver is to provide constant voltage and current to the LED light-emitting module to ensure that the LED emits normal light. Its circuits and electrical components are more complex, with buck-boost, filtering, constant current and other functions, the normal operation of the LED driver also has a certain sound, but generally we can not hear, and if it fails, the working state is unstable, there is a possibility of greater sound, buzzing.

If you are using LED lights and there is a buzzing sound when you turn on the lights, it is most likely that the driver is malfunctioning and not working properly.

Dear, this situation may be the joint contact is poor or the joint is wet<> as soon as the light is turned on, there is a current sound, the first possibility is that the light connector in your home is damp and causes the bridge, you can wait for a period of time after the weather is dry and then try. You can also use an electric hair dryer to blow at the lamp head for about 10 to 15 minutes, confirm that the lamp head is not wet, and then try again. There is also a possibility that the wires at the lamp head are not tightly connected with the rubber cover pin, you can disconnect the power supply at home, and then try to tighten the lamp head wire first.

In addition, it may also be that the light bulb is going to be broken, especially before the energy-saving light bulb is going to be broken, it may also emit a sizzling electric current sound, it is recommended that you see if there is a phenomenon of the bulb flickering on and off under the beam.

If the lamp is an LED lamp, it will be equipped with a driver circuit, called a driver, and the main role of the driver is to provide constant voltage and current to the LED light-emitting module to ensure that the LED emits normal light. Its circuits and electrical components are more complex, there are buck-step-down, Qiaoxingqing filtering, constant current and other functions, the normal operation of the LED driver also has a certain sound, but generally I filial piety can not hear, and if it fails, the working state is unstable, there is a possibility of greater sound, buzzing. If you are using LED lights and there is a buzzing sound when you turn on the lights, it is likely that the driver belt is malfunctioning and not working properly.

Is there anything in Sunzhou that is not clear? I can answer you in detail

Summary. Hello dear <>

As soon as the lights are turned on, there is no danger. Generally, it is caused by the resonance of the LED headlights of the vehicle, and the reason is that the relevant parts of the LED headlights are loose, and the rear cover of the headlights of the vehicle needs to be disassembled, and the headlights of the vehicles can be reinstalled to solve this problem. <>

Is it dangerous for <> lights to buzz as soon as they are turned on?

Hello dear <>

As soon as the lights are turned on, they buzz when they collapse, and there is no danger. Generally, the LED headlights of the vehicle are caused by resonance, and the reason is that the relevant parts of the LED headlights are loose, and the rear cover of the headlights of the vehicle needs to be removed, and the headlights of the vehicles can be reinstalled to solve this problem. <>

Big Red Shirt Flowers].

Expand the material: the headlights have a sound and may be because of the sound produced by the cooling fan, some LED lights are equipped with a cooling fan at the bottom, limited to the judgment space, the volume of the fan can not be too large, in order to dig and hold a good heat dissipation effect, the speed of the cooling fan is very high, the high speed of the small fan blade, the noise will inevitably be larger, so there will be a buzzing sound in the process of driving the car. <>

Does <> mean it's normal to have a buzzing sound from the headlights on both sides?

Hello, normal.

Oh!Thank you. By the way, you can also hear the buzzing sound in the cab, but it comes and goes, is it related to the front fan?

Not necessarily. If the vehicle is buzzing when turning, it is very likely that the ridge hall can be affected by the aging of the steering axle head. If you usually go straight and the car is buzzing, it may be that the steering gear is short of oil, the chassis rubber parts are aging, the machine mat is aging, the spark plug is faulty and other problems will basically affect the abnormal noise in the car.

It is when the car is not started, and you can hear it as soon as you turn on the lights.

There will be this sound when there is no start, if there is a Nabi in the engine compartment, after turning on the power, the current vehicle is electronically intelligently controlled, that is, there is this throttle on the hair hole rough machine, including the solenoid valve will work after the stool is energized, and this sound will appear.

Is that normal?

This is all normal, there is no problem, and this vehicle is like this now.

IfCeiling lampsIf the power of the ballast does not match the actual power of the lamp, then the ceiling light may buzz. In general, in this case, we only need to replace the ballast that matches the power of the lamp.

At the same time, if the ballast and the ceiling lamp are not installed tightly enough, then in the actual use process, they may form a resonance to cause the ceiling lamp to hum, this situation is relatively simple to solve, only need to install the connection between the ballast and the ceiling lamp.

If the power supply voltage is unstable, it will also cause this phenomenon, at this time you need to find a professional electrician to repair it at home, and it is likely to cause danger by yourself, which is not recommended.

There is no danger in the buzzing of the ceiling lamp, first of all, we must know that the main reason for the humming of the ceiling lamp is because the power of the ballast in your home does not match the power of the installed lamp, in addition to this reason, the unstable power supply voltage in your home will also cause the noise of the ceiling lamp.

The solution is also quite simple, we can replace the ballast of the ceiling lamp at home, and select the ballast with matching power and the lamp will not appear when installed, but if it is said that the ceiling lamp is ringing because of the unstable voltage, you can contact a professional electrician to help deal with it.