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 …
Why are Japanese rice cookers so expensive?
Why are Japanese rice cookers so expensive? As long as students going to Japan for travel, work or study will be posted by their friends …
What is the cause of static electricity, how to prevent it?
Static electricity on the hands in autumn and winter is quite annoying. Most of this is caused by dry skin and excessive friction. Drinking more …
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 …