The most commonly used top ten electronic components - Electronic Technology Solutions | Circuit Diagrams Explained

Engaged in the electronics industry, all kinds of electronic components have a kind of indescribable feelings, for engineers engaged in the electronics industry, electronic components like people's daily imports of rice, is a daily need to contact, every day need to use. Here is a list of the electronics industry, engineers commonly used in the top ten electronic components, named "Top Ten Electronic Components Star", I hope to make more reference and learning.

Star one: resistance

As a worker in the electronics industry, resistance is no one knows no one knows. Its importance, no doubt. People say that "resistance is the most used component in all electronic circuits."

A resistor is a substance that acts as a barrier to the flow of electricity, so it is called a resistive substance. Resistance will result in a change in the amount of electrons flowing, the lower the resistance, the greater the amount of electrons flowing, and vice versa. Substances that have no or very little resistance are called electrical conductors, or conductors for short. Substances that cannot form a current to be transmitted are called electrical insulators, or insulators for short.

In physics, resistance is used to indicate the size of a conductor's resistance to electric current. The greater the resistance of a conductor, the greater the resistance of the conductor to the current. Resistance generally varies from conductor to conductor and is a characteristic of the conductor itself. Resistive elements are energy-consuming elements that present a barrier to current.

The size of the resistance value of the resistive element is generally related to the temperature, the physical measure of resistance affected by temperature is the temperature coefficient, which is defined as the percentage change in resistance value for every 1℃ rise in temperature.

Resistance in the circuit with "R" plus a number, such as: R1 said the number of 1 resistance. The main role of the resistor in the circuit for the shunt, current limiting, voltage divider, bias, etc..

1, parameter identification: the unit of resistance for the ohm (Ω), multiplier units are: kilo-ohm (KΩ), megohm (MΩ) and so on. The conversion method is: 1 megohm = 1000 kilohm = 1,000,000 ohms resistor parameter labeling method there are three kinds, namely, the direct labeling method, color-coded method and the number of labeling method. a, the number of labeling method is mainly used for small volume of the circuit such as the patch, such as: 472 said 47 × 100Ω (i.e., 4.7K); 104 is said to be 100Kb, the most widely used color-coded ring labeling method, the examples are as follows: four-color ring resistor five-color ring resistor (Precision Resistors).

2, the resistor's color scale position and multiplier relationship is shown in the following table: Color Effective Numbers Multiplier Allowable Deviation (%) Silver / x0.01 ±10 Gold / x0.1 ±5 Black 0 +0 / Brown 1 x10 ±1 Red 2 x100 ±2 Orange 3 x1000 / Yellow 4 x10000 / Green 5 x100000 ±0.5 Blue 6 x1000000 ±0.2 Violet 7 x10000000 ±0.1 Violet 7 x10000000 ±0.1 Violet 7 x10000000 ±0.2 Violet 7 x10000000 ±0.2 Violet 7 x10000000 ±0.2 Violet 7 x10000000 ±0.1 gray 8 x100000000 / white 9 x1000000000 / .　　

Star 2: Capacitance

Capacitance (or capacitance, Capacitance) refers to the amount of charge stored at a given potential difference; denoted as C, the international unit is the farad (F). Generally speaking, the charge in the electric field will be subjected to force and move, when there is a medium between the conductor, it impedes the movement of the charge and make the charge accumulated in the conductor; resulting in the accumulation of charge storage, the most common example is two parallel metal plate. Also commonly known as capacitors.

1, capacitance in the circuit is generally used "C" plus the number of said (such as C13 said the number 13 capacitance). Capacitor is made of two pieces of metal film next to each other, separated by insulating material and components. The characteristics of capacitance are mainly isolated from the direct current AC. The size of the capacitance capacity is the size of the electrical energy that can be stored, the capacitance of the AC signal obstruction is called capacitive resistance, which is related to the frequency of the AC signal and capacitance. Capacitive resistance XC = 1/2πf c (f represents the frequency of the AC signal, C represents the capacitance capacity) The types of capacitors commonly used in telephones are electrolytic capacitors, ceramic capacitors, chip capacitors, monolithic capacitors, tantalum capacitors and polyester capacitors. Please login: power transmission and distribution equipment network View more information

2, identification methods: capacitance identification methods and resistor identification methods are basically the same, divided into straight labeling method, color-coded method and the number of labeling method of three kinds. The basic unit of capacitance with farad (F), other units are: millifarads (mF), microfarads (uF), nano-farads (nF), pico-farads (pF). Where: 1 farad = 103 mF = 106 microfarad = 109 nF = 1012 picofar capacity of the capacitor's capacity value in the capacitor is directly labeled, such as 10 uF/16V capacity of the capacitor's capacity value of the capacitance of the capacitance of the small value of the capacitance of the letter or the number of letters to indicate the letter of the representation method: