变压器耦合 [tex=1.429x1.0]Ex4wpJIxD8l62cC55OycrA==[/tex]振荡电路如图[tex=2.071x1.0]94d9gR2b2pSNSwvUIC2n9g4JT91vFKE8wxda1P0+jCM=[/tex] 所示, 已知 [tex=16.357x1.214]SZf30cGnTSDBy1lBbptraimokKDc/DPkq19zBGhNuWr9gumVlJeezEBi0mdrPCRSAr7xkfasZtRDVefArHzyzSp8+D8jiH05uQ3V8txZpJU=[/tex] 晶体管的[tex=9.214x1.429]jhdwapO4505rMghZIVaahNKFgFKq9fbvzrv6UFQFnfAzHdcskxn7kLk67qzBJpKIou0uD1zYvKNeNCCRQZh0oK8j6DsAIljY1EvsayOM34Y=[/tex], 略去放大电路输入导纳的影响, 试画出振荡器起振时开环小信号等 效电路, 计算振荡频率, 并验证振荡器是否满足振幅起振条件。[img=842x321]17d69f544870ed4.png[/img]
举一反三
- >>>x= [10, 6, 0, 1, 7, 4, 3, 2, 8, 5, 9]>>>print(x.sort()) 语句运行结果正确的是( )。 A: [0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10] B: [10, 6, 0, 1, 7, 4, 3, 2, 8, 5, 9] C: [10, 9, 8, 7, 6, 5, 4, 3, 2, 1, 0] D: ['2', '4', '0', '6', '10', '7', '8', '3', '9', '1', '5']
- set1 = {x for x in range(10)} print(set1) 以上代码的运行结果为? A: {0, 1, 2, 3, 4, 5, 6, 7, 8, 9} B: {0, 1, 2, 3, 4, 5, 6, 7, 8, 9,10} C: {1, 2, 3, 4, 5, 6, 7, 8, 9} D: {1, 2, 3, 4, 5, 6, 7, 8, 9,10}
- 电容三点式振荡器如图[tex=2.071x1.0]9utR16H0dkrRUD60XchLcp3EvOaj4njvHFvfM5+gsHI=[/tex] 所示, 已知 [tex=1.429x1.0]Ex4wpJIxD8l62cC55OycrA==[/tex] 谐振回路的空载品质因数[tex=2.571x1.214]KS+wKhXPPXd7ppYdobrTWQ==[/tex], 晶体管的输出 电导 [tex=7.286x1.429]CBVlFUSa2Ph/o1c5PYQWn6az5f/old3tq0BqRiZeOOVGyLUANwpztGzbQ20Eclkd9igpA+jySoIj0Ho+geO3cA==[/tex], 输入电导 [tex=7.357x1.429]ewi9McMfw6oqhbwOWwtPTnLJXzl477j9a41uGkaKarjPbquqbrQ7Ri9PIPNxSC8pIC727q+vzPBMqOFKMTvIDQ==[/tex] 试求该振荡器的振荡频率 [tex=0.857x1.214]VOhpUZGmsyFK9/GlBHBkQg==[/tex], 并验证 [tex=5.143x1.286]eGZgXNTrc3m5m3liyQiGeyRn/dvKIgUjPPAly4+gbh+x2E+DLdwH8MrdT3e+9TnB[/tex] 时,电路能否起振[img=414x305]17d6bc8de6c0857.png[/img]
- 【计算题】5 ×8= 6×4= 7×7= 9×5= 2×3= 9 ×2= 8×9= 7×8= 5×5= 4×3= 5+8= 6 ×6= 3×7= 4×8= 9×3= 1 ×2= 9×9= 6×8= 8×0= 4×7=
- 下面是图的拓扑排序的是?(多选)[img=340x240]1802faef6ebcc2a.png[/img] A: 2 8 0 7 1 3 5 6 4 9 10 11 12 B: 2 8 7 0 6 9 11 12 10 1 3 5 4 C: 8 2 7 3 0 6 1 5 4 9 10 11 12 D: 8 2 7 0 6 9 10 11 12 1 3 5 4