In electronics, cathode is a term used in electronic components such as electronic vacuum tubes, diodes, transistors, LEDs, etc.
cathode refers to the negative (-) side of a component through which the flow of electrons begins.
In electronic components, cathode refers to a component that behaves electrically as a negative electrode.
Electrons start at the cathode and flow toward the anode, the anode. A cathode serves to induce or control the flow of electrons.
For example, a diode is a component that controls the flow of current between a cathode and an anode.
When voltage is applied between the cathode and anode, the diode either passes or blocks current in a specific direction.
A cathode acts as an inlet through which current flows, and an anode acts as an outlet through which current flows.
In the case of a light emitting diode (LED), the “cathode” is the point that acts as the cathode and conducts current.
Electrically, when a voltage is applied to the LED, the electrons in the cathode are activated by the voltage and emit light.
In electronic components, a “cathode” is tied to a precise function, and there can be many different types of “cathode” depending on how the product is designed and how it is used.
Therefore, when a specific electronic component is referred to as cathode, it can be understood as referring to the cathode connected to the operating method of that component.
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