| 摘要 |
An exemplary power switching circuit ( 20 ) includes a control signal input terminal ( 210 ); an output terminal ( 220 ); direct current (DC) power supply ( 230 ); a first transistor ( 250 ) including a control electrode connected to the control signal input terminal, a first current conducting electrode, and a grounded second current conducting electrode; a second transistor ( 260 ) including a control electrode connected to first current conducting electrode of the first transistor via a discharging resistor ( 264 ) and a diode ( 266 ) respectively and connected to the DC power supply via a discharging capacitor ( 265 ), a first current conducting electrode connected to the DC power supply, and a second current conducting electrode connected to the output terminal; and a third transistor ( 270 ) including a control electrode connected to first current conducting electrode of the first transistor, a first current conducting electrode connected to the output terminal, and a second grounded current conducting electrode.
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