company news about Glass tube fuses can be used in DC circuits

1. A DC circuit (direct current circuit, dc circuit) is a circuit in which the direction of the current does not change, and the magnitude of the current in the DC circuit can be changed. The magnitude and direction of the current are constant is called constant current.

2. DC current will only flow when the circuit is closed, and completely stop flowing when the circuit is open. Outside the power supply, the positive charge flows from the high potential to the low potential through the resistance. In the power supply, the non-electrostatic force of the power supply overcomes the electrostatic force, and then "transfers" the positive charge from the low potential to the high potential. Such circulation forms a closed current line.

3. In the DC circuit, the function of the power supply is to provide a constant electromotive force that does not change with time, and to supplement energy for the Joule heat consumed on the resistance. For example, a flashlight (using dry batteries) constitutes a DC circuit. Generally speaking, a circuit that uses dry batteries and batteries as a power source can be regarded as a DC circuit. The circuit formed by the power supply is also a DC circuit. Common low-voltage electrical appliances use DC power, especially battery-powered electrical appliances. Most circuits require DC power.