Introduction of Kunshan ammeter manufacturer ammeter:

Ammeter is used to measure the current in AC and DC circuit. In the circuit diagram, the symbol of ammeter is "circle a". The current value is in standard units of "a" or "a".

The ammeter is made according to the action of magnetic force on the electrified conductor in the magnetic field. There is a permanent magnet inside the ammeter, which generates a magnetic field between the poles. There is a coil in the magnetic field. There is a hairspring at both ends of the coil. The spring is connected to a terminal of the ammeter. The spring and the coil are connected by a rotating shaft, and there is a pointer at the front end of the rotating shaft relative to the ammeter. When there is a current passing through, the current passes through the magnetic field along the spring and the rotating shaft, and the current cuts the magnetic induction line. Therefore, under the action of the magnetic field force, the coil deflects and drives the rotating shaft and the pointer to deflect. As the magnetic force increases with the current, the current can be observed by the deflection of the pointer. This is called magnetoelectric ammeter, which is the kind we usually use in the laboratory. In junior high school, the range of ammeter is generally 0 ~ 0.6A and 0 ~ 3a.