| 摘要 |
An exemplary power supplying and discharging circuit ( 200 ) includes a control signal input terminal ( 21 ), an output terminal ( 26 ), a direct current (DC) power supply ( 22 ), a bias resistor ( 27 ), a first transistor ( 23 ), a second transistor ( 24 ), and a third transistor ( 25 ). The first transistor includes a base electrode connected to the control signal input terminal, a collector electrode connected to the DC power supply via the bias transistor, and an emitter electrode grounded. The second transistor includes a base electrode connected to the collector electrode of the first transistor, a collector electrode connected to the output terminal, and an emitter electrode grounded. The third transistor includes a gate electrode connected to the collector electrode of the first transistor, a source electrode connected to the DC power supply, and a drain electrode connected to the output terminal.
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