Industry News

The shunt is used to measure DC current, and it is made according to the principle that a voltage is generated across the resistor when the DC current passes through a resistor with a small resistance value.

The initial resistance deviation of the resistor is familiar to everyone. Like the commonly used thick film resistors (such as 0603 package), the general accuracy is 1% or 5%. It refers to the resistance deviation at room temperature, and the initial resistance deviation is fixed after leaving the factory. For example, the nominal resistance is 100Ω, the actual measurement is 101Ω at room temperature, and the initial deviation is 1%.

What is a shunt resistor? A shunt resistor is a resistor with a small resistance value for measuring DC current. It is made according to the principle of a voltage drop across the resistor when the DC current passes through the resistor, and converts the current signal into a voltage signal for DC current detection.

As a part of switching power supply, industrial switching power supply has become more and more widely used in the market with the rapid development of industry technology. Many large-scale equipment have high requirements for the selection of industrial switching power supplies. Mingwei power adapter manufacturers take you to understand the purchase considerations for industrial switching power supplies.

Because the voltage transformer is prone to loosening of bolts or rupture of porcelain bushings due to vibration during transportation, it needs to be checked before formal installation to ensure that there is no damage before installation and use. Next, let's take a look at what to check and the steps to install.

Latching refers to "self-locking", which means that after the relay is energized, its state is automatically locked and the circuit is kept connected. Even if the control current is disconnected at this time, its state will not be changed. That is to say, when the power is energized and absorbed, the control current is disconnected, and it remains on until the unlock button is pressed.

Solid-state relay is a new type of non-contact switching device composed of solid-state electronic components. It uses the switching characteristics of electronic components (such as switching triodes, triacs and other semiconductor devices) to achieve non-contact and non-sparking.

Magnetic latching relay is a new type of relay developed in recent years, and it is also an automatic switch. Like other electromagnetic relays, it automatically switches on and off the circuit.

Chip inductors can be divided into low-power inductors and high-power inductors. Chip inductors, low-power inductors are mainly used in frequency selective circuits and oscillating circuits; high-power inductors are mainly used in dc/dc converters, used as energy storage components or lc filtering. There are three types of low-power inductors: wire-wound, multilayer, and high-frequency; high-power inductors are all wire-wound.

Preventive testing is an important link in the operation and maintenance of power equipment, and it is one of the effective programs to ensure the safe operation of power equipment.