what is the use of a transistor
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Applications:
1️⃣It is used as a switch for "large currents"
You can turn ON/OFF a large current flow by turning ON/OFF a small current using a transistor. Turning ON/OFF a large current flow directly without a transistor will be a difficult task and might need the person to manually cut off the line.
2️⃣It is used for amplification
For example, If you can manipulate the "small current" wave shape to follow that of a sound signal (by converting sound to electrical signal), and then apply to the transistor, the "large current" will get the shape of that of the "small current" which in turns is the amplified sound signal shape. In short, sound signal (for that matter any signal) is amplified with the help of a transistor.
1️⃣It is used as a switch for "large currents"
You can turn ON/OFF a large current flow by turning ON/OFF a small current using a transistor. Turning ON/OFF a large current flow directly without a transistor will be a difficult task and might need the person to manually cut off the line.
2️⃣It is used for amplification
For example, If you can manipulate the "small current" wave shape to follow that of a sound signal (by converting sound to electrical signal), and then apply to the transistor, the "large current" will get the shape of that of the "small current" which in turns is the amplified sound signal shape. In short, sound signal (for that matter any signal) is amplified with the help of a transistor.
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