AC And DC Current

Under the rapid development of our modern society, the use of electricity is an important driving force for various intelligent scenarios in life.

In our automatic door accessories industry, the use of electricity is generally divided into two types: one is wired model. Most products fall into this category, such as sensors, some switches, and so on. The wired version will be more stable. The other is the wireless model, which uses dry batteries or button cells for power supply and is generally used with the receiver as a whole set. In comparison, it is more convenient , and it is also suitable for special occasions where wiring is not possible. Such as our M-505 wireless switch series and M-271 wireless attendance fingerprint kits and so on. Our products are suitable for both DC and AC, and are designed with wide voltage input, convenient and universal.

So, electricity is an important driving force. I believe that we can see the marked AC and DC currents in our lives. How do we distinguish between the two and their respective uses?

Electricity is a type of energy that involves the movement of electrons along a conductor, such as a wire. The flow of electrons can occur in one direction or both directions along the wire. When electricity flows in one direction, it is referred to as direct current (DC). Alternating current (AC) is when the electrons flow in both directions — one and then the other. Batteries produce direct current, and electrical power grids that provide electricity to homes and other buildings use alternating current.

Voltage -- A DC motor.

Another difference between AC and DC involves the amount of energy that each one can carry. Every battery is designed to produce only one voltage level, and that voltage of direct current cannot travel very far until it begins to lose energy. AC voltage from a generator in a power plant can be bumped up or down in strength by another mechanism, called a transformer.

Transformers are used wherever an electrical voltage needs to be increased or decreased. For example, they are commonly seen on electrical poles. A power plants produces electricity at a very high voltage so that it can travel great distances. The voltage must be reduced, however, before the electricity reaches homes and other buildings that use it to power appliances, machinery and other devices. AC also can be changed to DC by an adapter, such as the kind used to power the battery on a laptop computer.