实验 受控源的实验研究
一、目的
1、通过仿真测试，研究受控源的外特性及其转移参数。
2、理解受控源的物理概念，加深对受控源的认识和理解。
二、容
1、测试受控源VCVS的转移特性U2=f(U1)及负载特性U2=f(IL)
1）启动EWB
2）创建测试电路如图1所示
![](https://wkrtcs.bdimg.com/rtcs/image?w=388.00&md5sum=7ea79e59cdc338599927c40a652469c6&sign=10d399fdfb&rtcs_flag=1&rtcs_ver=4&l=webapp&bucketNum=311&ipr={"t":"img","r":"r_7","w":"388.00","h":"162.00","dataType":"png","c":"word/media/image1.png","imgOriW":402,"imgOriH":168})
图1
2）RL=2kΩ,调节稳压电源输出电压U1（0-8V）,调用参数分析
(parameter sweep)功能，得出U1和U2值填入表1-1中，观
察并打印转移特性曲线U2=f(U1)，并求出转移电压比μ。
V1 (V) | 0 | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
V2 (V) | 0 | 0.5 | 1.0 | 1.5 | 2.0 | 2.5 | 3.0 | 3.5 | 4.0 |
表1-1
![](https://wkrtcs.bdimg.com/rtcs/image?w=492.00&md5sum=7ea79e59cdc338599927c40a652469c6&sign=10d399fdfb&rtcs_flag=1&rtcs_ver=4&l=webapp&bucketNum=311&ipr={"t":"img","r":"r_11","w":"492.00","h":"181.00","dataType":"png","c":"word/media/image2.png","imgOriW":586,"imgOriH":233})
3）保持U1=2V,接入电流表，电路如图，调节电阻RL(50-∞Ω),
仿真得出相应 U2及IL，填入表1-2中，用坐标纸绘出负载特性
曲线U2=f(IL)。
![](https://wkrtcs.bdimg.com/rtcs/image?w=528.00&md5sum=7ea79e59cdc338599927c40a652469c6&sign=10d399fdfb&rtcs_flag=1&rtcs_ver=4&l=webapp&bucketNum=311&ipr={"t":"img","r":"r_13","w":"528.00","h":"206.00","dataType":"png","c":"word/media/image4.png","imgOriW":433,"imgOriH":204})
表1-2
RL (Ω) | 50 | 70 | 100 | 200 | 300 | 400 | 500 | 1000 |
V2 (V) | 1．000 | 1．000 | 1．000 | 1．000 | 1．000 | 1．000 | 1．000 | 1．000 |
I L (mA) | 20．00 | 14．29 | 10．00 | 5．001 | 3．334 | 2．501 | 2．001 | 0．000 |
2、测试受控源VCCS的转移特性IL=f(U1)及负载特性IL=f(U2)
1) 创建测试电路如图示
..
![](https://wkrtcs.bdimg.com/rtcs/image?w=553.00&md5sum=7ea79e59cdc338599927c40a652469c6&sign=10d399fdfb&rtcs_flag=1&rtcs_ver=4&l=webapp&bucketNum=311&ipr={"t":"img","r":"r_11","w":"553.00","h":"200.00","dataType":"png","c":"word/media/image5.png","imgOriW":597,"imgOriH":216})
![](https://wkrtcs.bdimg.com/rtcs/image?w=553.00&md5sum=7ea79e59cdc338599927c40a652469c6&sign=10d399fdfb&rtcs_flag=1&rtcs_ver=4&l=webapp&bucketNum=311&ipr={"t":"img","r":"r_11","w":"553.00","h":"280.00","dataType":"png","c":"word/media/image6.png","imgOriW":631,"imgOriH":319})
2) RL=2KΩ,调节稳压电源输出电压U1(1-8V),仿真得出相应IL值，
填入表3中，调用参数分析(parameter sweep)功能，观察并
打印特性曲线U2=f(U1)，由U2与IL关系可求IL=f(U1)曲线，并
据此求出转移电导gm。
V1 (V) | 1 | 2 | 3 | 4 | 5 | 6 | 7 | 8 |
I L (mA) | -1.500 | -3.00 | -4.498 | -6.00 | -7.50 | -9.00 | -10.5 | -12.00 |
表3
![](https://wkrtcs.bdimg.com/rtcs/image?w=480.00&md5sum=7ea79e59cdc338599927c40a652469c6&sign=10d399fdfb&rtcs_flag=1&rtcs_ver=4&l=webapp&bucketNum=311&ipr={"t":"img","r":"r_17","w":"480.00","h":"229.00","dataType":"png","c":"word/media/image7.png","imgOriW":428,"imgOriH":191})
3) 保持U1=2V,从大到小调节电阻RL(50-1Ω), 仿真得出U2及IL，
填入表4中，绘出IL=f(U2)曲线。
RL (Ω) | 50 | 20 | 10 | 8 | 4 | 2 | 1 |
I L (mA) | -3.000 | -3.000 | -3.000 | -3.000 | -3.000 | -3.000 | -3.000 |
V2 (V) | -150.0 | -60.0 | -30.0 | -24.0 | -12.0 | -6.0 | -3.0 |
表4
3、自行设计测试受控源CCVS的转移特性U2=f(U1)
1) 创建测试电路如图示
![](https://wkrtcs.bdimg.com/rtcs/image?w=553.00&md5sum=7ea79e59cdc338599927c40a652469c6&sign=10d399fdfb&rtcs_flag=1&rtcs_ver=4&l=webapp&bucketNum=311&ipr={"t":"img","r":"r_6","w":"553.00","h":"195.00","dataType":"png","c":"word/media/image8.png","imgOriW":588,"imgOriH":207})
2）RL=2kΩ,调节稳压电流源输出电压U1（0.1-0.8V）,调用参数分析
(parameter sweep)功能，得出U1和U2值填入表中，观察并打印
转移特性曲线U2=f(U1)，U2=f(I1)并求出求出转移电阻rm。
I1 (V) | 0.1 | 0.2 | 0.3 | 0.4 | 0.5 | 0.6 | 0.7 | 0.8 | |
V2 (V) | 0．1 | 0.2 | 0.3 | 0.4 | 0.5 | 0.6 | 0.7 | 0.8 | |
![](https://wkrtcs.bdimg.com/rtcs/image?w=500.00&md5sum=7ea79e59cdc338599927c40a652469c6&sign=10d399fdfb&rtcs_flag=1&rtcs_ver=4&l=webapp&bucketNum=311&ipr={"t":"img","r":"r_6","w":"500.00","h":"233.00","dataType":"png","c":"word/media/image9.png","imgOriW":680,"imgOriH":316})
保持I=0.6A,从小到大调节电阻RL(1-50Ω), 仿真得出U2及IL。
R | 1 | 2 | 4 | 8 | 10 | 20 | 50 |
V2 | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 | 0.6 |
I | 0.6 | 0.3 | 0.15 | 0.075 | 0.06 | 0.03 | 0.012 |
rm=
4.受控源CCCS的转移特性IL=f(U1)及负载特性IL=f(U2),并求出转移电流比u。
1)创建电路
![](https://wkrtcs.bdimg.com/rtcs/image?w=553.00&md5sum=7ea79e59cdc338599927c40a652469c6&sign=10d399fdfb&rtcs_flag=1&rtcs_ver=4&l=webapp&bucketNum=311&ipr={"t":"img","r":"r_6","w":"553.00","h":"203.00","dataType":"png","c":"word/media/image10.png","imgOriW":588,"imgOriH":216})
2) RL=2Ω,调节稳压电流源输出I1(0.1-0.8V),仿真得出相应I2值，填入表中，
调用参数分析(parameter sweep)功能，观察并打印特性曲线U2=f(I1)，由I2
与IL关系可求IL=f(U1)曲线，并据此求出转移电流比u
I1 (V) | 0.1 | 0.2 | 0.3 | 0.4 | 0.5 | 0.6 | 0.7 | 0.8 | |
I 2 (mA) | -100.0 | -200.0 | -300.0 | -400.0 | -500.0 | -600.0 | -700.0 | -800.0 | |
U=1![](https://wkrtcs.bdimg.com/rtcs/image?w=554.00&md5sum=7ea79e59cdc338599927c40a652469c6&sign=10d399fdfb&rtcs_flag=1&rtcs_ver=4&l=webapp&bucketNum=311&ipr={"t":"img","r":"r_6","w":"554.00","h":"246.00","dataType":"png","c":"word/media/image11.png","imgOriW":680,"imgOriH":302})
保持I1=0.6A,调节电阻RL(100-1Ω), 仿真得出U2及IL。
R | 100 | 50 | 20 | 10 | 8 | 4 | 2 | 1 |
I | -0.6 | -0.6 | -0.6 | -0.6 | -0.6 | -0.6 | -0.6 | -0.6 |
V | -60 | -30 | -12 | -6 | -4.8 | -2.4 | -1.2 | -0.6 |
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