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Answer Posted / ghulam mustafa qassim cement c
IGBT( insulated Gate Bipolar Transistor). It is a semiconductor with 3 terminals which work as a electronic gate to flow the current.It is provide fast switching for VFD operation. IGBTS are capable of switching ON/OFF several thousand time in a second. It has high current carrying capacity and low heat dissipation. It is combination of BJT and MOSFET..
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