Can accuse understanding of switch parts of an apparatus

We signal to touching from parts of an apparatus respect of frequency of undee requirement, switch, odd ambipolar, main actor, defect considers below, 7 kinds can accuse BJT of switch parts of an apparatus, SCR, GTO, P-MOSFET, IGBT, MCT, SIT.

BJT: Parts of an apparatus of electric current fully control; Lasting control of base electric current is enlightened, base electric current closes for 0; Switch frequency moderate; Ambipolar; Main good point: On-state pressing falls small, on-state loss is small; Main drawback: Drive power is great, frequency is low.

　　

　　

SCR: Parts of an apparatus of electric current half control; pulse door extremely voltaic control is enlightened, spark signal is incontrollable leave; Switch frequency is low; Ambipolar; Main good point: On-state pressing falls small, on-state loss is small; Main drawback: Drive power is great, frequency is low.

　　

GTO: Parts of an apparatus of electric current fully control; pulse door extremely voltaic control is enlightened, lose pulse door pole electric current (bigger) control closes; Switch frequency is low; Ambipolar; Main good point: On-state pressing falls small, on-state loss is small; Main drawback: Drive power is great, frequency is low.

　　

P-MOSFET: Parts of an apparatus of voltage fully control; Lasting grid voltage control is enlightened, negative grid voltage is controlled and maintain continuously close; Switch frequency is tall; Extremely odd; Main good point: Input impedance is tall, drive power is little, Drive circuitSimple, working frequency is tall; Main drawback: On-state pressing falls big (on-state loss is big) , electric current, voltage is rated low.

　　

IGBT: Parts of an apparatus of voltage fully control; Lasting grid voltage control is enlightened, negative grid voltage is controlled and maintain continuously close; Switch frequency is taller; Ambipolar; Main good point: Input impedance is tall, drive power is little, drive circuit is simple, working frequency is tall; Main drawback: On-state pressing falls big (on-state loss is big) .

　　

MCT: Parts of an apparatus of voltage fully control; pulse voltage control is enlightened, control of negative pulse voltage closes; Switch frequency is taller (under IGBT) ; Ambipolar; Main good point: Input impedance is tall, drive power is little, drive circuit is simple, working frequency is tall; Main drawback: On-state pressing falls big (on-state loss is big) .

　　

SIT: Parts of an apparatus of voltage fully control; Continuously voltage is controlled, ; Switch frequency is tall; Extremely odd; Main good point: Input impedance is tall, drive power is little, drive circuit is simple, working frequency is tall; Main drawback: On-state pressing falls big (on-state loss is big) .