Working principle of electric bell

The working principle of electric bell is the magnetic effect of current.

Electric bell is an electronic sound device, which is usually used for reminding and informing. An electric bell usually consists of a bell and a bell bracket. A clock is a hollow metal sphere, usually made of copper or steel. It is equipped with an electromagnet inside. When the current passes through the electromagnet, it will produce a magnetic field, which will make the bell vibrate and make a crisp sound.

Electric bell is a machine that uses the characteristics of electromagnet to control the on-off of current wound in the coil of main magnetic core through the repeated closing device of power switch, so that the magnetic circuit of elastic suspended magnetic core is alternately attracted and separated by the main magnetic circuit, and the electric hammer connected to the elastic suspended magnetic core vibrates on the surface of the bell and makes a sound.

Suggestions for buying electric bells:

1, function

First of all, the tone of the electronic doorbell is very important. Music electronic doorbell has a clear sound and a long duration. The sound of the electromagnetic bell is also clear, but it consumes a lot of electricity.

2. Current

General electronic doorbells have alternating current and batteries. Generally speaking, however, electronic doorbells with batteries consume more electricity than those with alternating current, and it won't take long to replace the batteries. However, AC electronic gates can be divided into high voltage and low voltage. Generally speaking, high voltage should be safe to avoid electric shock.

3. Quality

Choosing any product needs to ensure the quality, and the electronic doorbell is not unexpected. The way to test the quality of electronic doorbell is to listen to whether its sound is crisp and loud and whether its sensitivity is fast enough. Moreover, the electromagnetic doorbell should choose two pieces of metal to make sound and reverberate for a long time.

Reference to the above content: Baidu Encyclopedia-Bell