Will there be a sound during the operation of the time relay

Update:03-07-2020
Summary:

The function of the time relay is very wide and wide, a […]

The function of the time relay is very wide and wide, and there are many types, mainly used for circuit control, which can also be called a circuit switch, then, will the time relay work make a sound, the following is Explain this problem to everyone.

There are many types of relays.Generally, mechanical relays will make sounds during work, because the reeds attract and make sounds.

Mechanical time relays are generally composed of iron cores, coils, armatures, contact reeds, etc. As long as a certain voltage is applied to both ends of the coil, a certain current will flow through the coil, thereby generating electromagnetic effects, and the armature will be in The electromagnetic force attracts the iron core against the pulling force of the return spring under the action of electromagnetic attraction, so that the moving contact of the armature and the static contact (normally open contact) are attracted.

When the coil is de-energized, the electromagnetic suction will disappear, and the armature will return to the original position under the reaction force of the spring, so that the moving contact and the original static contact (normally closed contact) are released. , So as to achieve the purpose of turning on and off in the circuit. So when the relay is continuously attracted, it will make a sound.

So the mechanical time relay will make a sound, while other relays generally will not make a sound