Difference between power transistor and normal transistor
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Transistors are made of semiconductor material with three or more terminals used to connect to an external circuit. By applying a current or a voltage to one of the pairs of the terminals, there is a change in current through another pair of terminals.
A power transistor is physically larger than a normal transistor and is capable of carrying more current without melting or burning up. Usually, a power transistor has a heat sink attached to help remove heat from the device and keep it cool.
In applications, normal transistors are used in amplification and switching operation and power transistors are in battery charger circuits and power supply circuits (smps) to hold a large amount of currents like irf4905. It carries heavy drain currents and more power dissipation up to 200w etc.
A power transistor is physically larger than a normal transistor and is capable of carrying more current without melting or burning up. Usually, a power transistor has a heat sink attached to help remove heat from the device and keep it cool.
In applications, normal transistors are used in amplification and switching operation and power transistors are in battery charger circuits and power supply circuits (smps) to hold a large amount of currents like irf4905. It carries heavy drain currents and more power dissipation up to 200w etc.
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