What is the control room in a power plant used for?
The control room in a power plant is the nerve center of an electrical power station. This room houses large, floor-to-ceiling screens which measure and …
Technology
What is a rectifier diode, how does it works?
A rectifier diode is a semiconductor device that converts AC power into DC power. Usually, it contains a PN junction with anode and cathode terminals. …
How to use the multimeter?
A multimeter, also known as a three-way meter, and a multiplexing meter, is a multi-function, multi-range measuring instrument. Generally, a multimeter can measure DC, DC …
What is the essence of electric current?
What is the essence of electric current? The textbook says that it is the directional movement of electrons. Does this movement circle around the circuit …
What is the function of the resistor in a circuit? There may have 4!
We all know that the resistor can reduce the voltage, and the resistor itself consumes a certain amount of loss (heating), so to transform and …
What is a PN junction diode?
What is a PN junction diode? Light-emitting diodes are relatively common in our lives, such as commercial traffic lights, traffic lights, LED screens, LED bulbs, …
What does drift motion and diffusion motion mean in a PN junction?
The drift motion and diffusion motion in the PN junction are due to a concentration gradient. The majority of the electrons will diffuse in the …
Do I need an oscilloscope to learn electronics?
Oscilloscopes are the eyes of electronic engineers and maintenance personnel. Without observation instruments such as oscilloscope and spectrum analyzer, it is tough to judge the …
What means capacitance? How do we understand it?
Although we know that the capacitor can be charged and discharged, the voltage across the capacitor cannot be changed suddenly, and the capacitor can pass …
What is an ideal voltage source and an ideal current source?
Regardless of the load resistance size and the size of the output current, the output voltage of an ideal voltage source does not change. The …