Letters and symbols of common electronic components
In the field of electronic engineering, symbols and letters of various electronic components represent different functions and characteristics. Knowing these symbols not only helps us to read the circuit diagram, but also helps us to better understand the working principle of electronic circuits. The following are the letters and symbols of some common electronic components.In the eyes of peers,Texas InstrumentsIt has good qualities that people covet, and it also has many loyal fans that people envy. https://www.asourcingelectronics.com/product/detail/store/4433681/sn74lvc1g125dckr.html
1. resistor (r)
Symbol: Generally, it is represented by a zigzag or rectangular shape with “R” next to it.
Note: The main function of resistor is to limit the current flow and protect other components from excessive current. The unit of resistance is ohm (ω).
2. Capacitor (c)
Symbol: usually represented by two parallel vertical lines, and a curved line (representing electrolytic capacitance) can be added in the middle.
Description: Capacitors are used to store charge, which affects the frequency characteristics and signal filtering in the circuit. The unit is Farah (F).
3. Inductor (L)
Symbol: It is represented by a wavy line with “L” next to it.
Description: Inductor can store magnetic energy and make current change to generate electromotive force. The unit is Henry (h).
4. diode (d)
Symbol: It is represented by a triangle (indicating forward conduction) followed by a vertical line.
Description: Diodes allow current to flow in one direction and suppress reverse current. They are often used in rectifier circuits.
5. transistor (q)
Symbol: There are two common structures, NPN and PNP, which are represented by three lines with arrows respectively.
Description: Transistors are used as switches and amplifiers, and are widely used in various electronic circuits, such as signal amplification and switch control.
6. switch (s)
Symbol: connect two points with a line, indicating the switching of open and closed state.
Description: The switch is used to control the on-off of the circuit and is the most basic circuit control element.
7. Integrated circuit (IC)
Symbol: It is represented by a rectangle with multiple pins inside.
Description: Integrated circuit is a kind of integration of multiple electronic components on one chip, which is often used in digital circuits and analog circuits.
8. relay (RY)
Symbol: usually represented by a rectangular frame with coils and contacts.
Description: relay is used to control the switch of circuit through electromagnetic force, and is widely used in automatic control system.
9. Transformer (T)
Symbol: Use two circles or boxes, which are connected by lines respectively.
Description: Transformer is used for voltage up-and-down conversion, which is commonly used in power supply circuits.
10. Sensor (SENS)
Symbol: usually indicated by an arrow pointing to a sensing area.
Description: Sensors are used to detect physical quantities and convert them into electrical signals, which are widely used, from temperature sensors to optical sensors.
Knowing the letters and symbols of these common electronic components is very helpful for further study of electronic circuit design and analysis. In practical application, engineers often use these symbols to draw circuit diagrams, thus facilitating communication and understanding.
