在共射基本放大电路中，当一定时，在一定的范围内增大发射极电流，则放大电路的输入电阻 。https://edu-image.nosdn.127.net/16734658C55B32424E028FF58C5548A9.bmp?imageView&type=jpeg&thumbnail=520x520&quality=100https://nos.netease.com/edu-image/AF872F4BB1E61FFBF36969F3FA21CC23.bmp?imageView&type=jpeg&thumbnail=520x520&quality=100
举一反三
- 在如图所示的放大电路中，已知，，，，，，，、、足够大。晶体管的工作状态是 状态。https://edu-image.nosdn.127.net/F79A83E95AA17B78052432039DBBC254.bmp?imageView&type=jpeg&thumbnail=520x520&quality=100https://nos.netease.com/edu-image/D38B7739029B77E668AB870E65223EC1.bmp?imageView&type=jpeg&thumbnail=520x520&quality=100https://nos.netease.com/edu-image/5ECA665100B5E7810223A1ED6FB64C37.bmp?imageView&type=jpeg&thumbnail=520x520&quality=100https://nos.netease.com/edu-image/FC315751443B2C4A726FBD583ED15119.bmp?imageView&type=jpeg&thumbnail=520x520&quality=100https://nos.netease.com/edu-image/676B3BC6D6C1AEFA8C59C367506E8DF0.bmp?imageView&type=jpeg&thumbnail=520x520&quality=100https://nos.netease.com/edu-image/ABFFE0640249849738ED6A9F2A2850F0.bmp?imageView&type=jpeg&thumbnail=520x520&quality=100https://nos.netease.com/edu-image/FDB91D8F5266D1112E348BF33189B537.bmp?imageView&type=jpeg&thumbnail=520x520&quality=100https://nos.netease.com/edu-image/EEFE3428A09FF56552E0ACDD32F85625.bmp?imageView&type=jpeg&thumbnail=520x520&quality=100https://nos.netease.com/edu-image/5304BCBD9EE04F43D52B75EB47C419E7.bmp?imageView&type=jpeg&thumbnail=520x520&quality=100https://nos.netease.com/edu-image/EBAD862E88FCCCEFE9B726E67050C057.bmp?imageView&type=jpeg&thumbnail=520x520&quality=100https://nos.netease.com/edu-image/ED44A0B8A594AEFB705508FBB01608BA-1441449546094?imageView&thumbnail=520x520&quality=100
- 稳压管稳压电路如图所示，其中，，且具有理想特性。由此可知输出电压为 。https://edu-image.nosdn.127.net/673C255186FDCF88EDBAC49B07ADB1CB.bmp?imageView&type=jpeg&thumbnail=520x520&quality=100https://nos.netease.com/edu-image/0E53141787C336CC50F75AFDF7F0FE68.bmp?imageView&type=jpeg&thumbnail=520x520&quality=100https://nos.netease.com/edu-image/69E801A7EC054F71E15554043D89E990.bmp?imageView&type=jpeg&thumbnail=520x520&quality=100https://nos.netease.com/edu-image/CAD349EDF442F5664D9C0AD08B3FAACE.bmp?imageView&type=jpeg&thumbnail=520x520&quality=100
- 某三极管的极限参数，，若它的工作电压，则工作电流不得超过 mA。https://edu-image.nosdn.127.net/6084676B77A3D09BA6C966E3B2F6FE06.bmp?imageView&type=jpeg&thumbnail=520x520&quality=100https://nos.netease.com/edu-image/A8B6C32B9AEBFFC26D0EA05E546AD174.bmp?imageView&type=jpeg&thumbnail=520x520&quality=100https://nos.netease.com/edu-image/972FC77B3391BB3BF38CED03BC20A6C4.bmp?imageView&type=jpeg&thumbnail=520x520&quality=100https://nos.netease.com/edu-image/E0E53F335BD074C3CC13B5C7AF03908B.bmp?imageView&type=jpeg&thumbnail=520x520&quality=100https://nos.netease.com/edu-image/358494F4D729F0EF94D2F79DDEE623C0.bmp?imageView&type=jpeg&thumbnail=520x520&quality=100
- 在如图所示的放大电路中，测得，，说明该电路出现了故障，分析故障原因是 。https://edu-image.nosdn.127.net/ECE1C8571F73447BB28712027200EB4A.bmp?imageView&type=jpeg&thumbnail=520x520&quality=100https://edu-image.nosdn.127.net/8C2F14849EFF7ED8A593758C5B9A8050.bmp?imageView&type=jpeg&thumbnail=520x520&quality=100https://nos.netease.com/edu-image/D1EE6B81338F1CEDC63D276A36C0F842-1441416364737?imageView&thumbnail=520x520&quality=100
- 当输入电压幅度一定时，放大电路空载输出电压为，带上负载后的输出电压为，二者相比应为 。https://edu-image.nosdn.127.net/356FAC01463A740CB812C53FE743F524.bmp?imageView&type=jpeg&thumbnail=520x520&quality=100https://nos.netease.com/edu-image/FBC70F47908B3806CAB113273A155323.bmp?imageView&type=jpeg&thumbnail=520x520&quality=100