Diodes and Transistors – These both deal with modifying the flow of the electrical current. Diodes, an example of which is a Light Emitting Diode (LED), serve as the “train tracks” for the current, allowing it to flow in one specific direction and maintain a certain strength. Transistors, which can either be NPN or PNP, are used to control or amplify the current to the desired strength. Both diodes and transistors are integral electrical components, and allow electronics to run smoothly.
Electronic components form parts of electronic circuitry, and are used or manufactured in the field of electronics, which is the study of electrical devices used for controlling electrically charged particles or the flow of electrons to execute any electrical operation. Some of the most common electronic components are as follows:
Resistor: A resistor resists electric current, and the resistance is measured in ohms. Colors on the body of the resistor are a code for the value. Flow Meter Digital colors represent the numbers from 0 to 9. In a variable resistor, resistance can be varied by moving a knob or slider. A variable resistor is used to control volume in many devices.
Capacitor: This is measured in farads. A capacitor is used for storing electrical charges that can be released upon demand. Capacitors can be of different types – electrolyte and ceramic disc are two of them. Diode: A semiconductor device, diodes allow current to flow in one direction only. Small, cheap and lasting, light emitting diodes (LEDs) are special diodes that give out light and allow current to flow in one direction.
NPN bipolar transistor: Used for current control, they can amplify currents with a small amount of heat dissipation and very little spatial waste. PNP bipolar transistor: Its functions are the same as NPN, but construction is slightly different.Crystal: When a voltage is applied, crystals can accurately vibrate a specific frequency.