Understand the function of active components
In electronic devices, active components play a vital role. They are major components in electronic circuits and are responsible for critical tasks such as amplifying signals and controlling current and voltage.
Definition of active components
An active component is a component in an electronic circuit that controls or manipulates current or voltage. Active components require an external power source to perform their functions, so they are often used to amplify signals or control current and voltage.
How active components work
The working principle of active components is based on their internal electronic structure. Active components usually contain one or more PN junctions, which control the direction of current flow. When external power is applied to an active component, electrons move from the N-type semiconductor to the P-type semiconductor, creating an electric current. By changing the voltage of the external power supply, we can control the size of the current to amplify or attenuate the signal.
Main types of active components
There are many types of active components, including diodes, transistors, integrated circuits, etc. These devices perform various functions in electronic equipment, such as signal amplification, switch control, data storage, etc.
The role of active components in various applications
Active components play a key role in various electronic devices. In computers, active components such as transistors and integrated circuits are used to perform computational and logical operations. In communications equipment, active components such as amplifiers and oscillators are used to amplify and modulate signals. In power supply equipment, active components such as rectifiers and voltage regulators are used to convert and stabilize voltage.
