• 2022-10-25
    图 [tex=3.143x1.357]v6wLHIR0wgPtMWM6+VOBEA==[/tex]所示电路,换路前电路处于稳态,[tex=1.643x1.0]e6RhHIicI4xKNcYb53RxjQ==[/tex]时 开关闭合,试求开关闭合后电容电压[tex=2.071x1.357]g1QkHMNmfq98JrBxthMdHg==[/tex]和电流[tex=1.786x1.357]qSVMjUNpaQ0vhg34i8WdkQ==[/tex]的表达式,并画出波形图。
  • 解  用三要素法求解:[tex=8.929x1.5]sR65xKuPGLM0jUesLueDRmbYMXYDp3NIjKoEivL+BQyYhLBYuYDJfMPyccJwYSXX2/GCXNC3BTasvVACVt8vOg==[/tex][tex=8.214x2.571]daSbHn1gM+TbTFf3EjpToUnB6NXJ28hNB2wGllAM6jLOzW3QRFbPmYrN6cikCemX[/tex][tex=9.714x2.071]FTWnxV8uVRTOTfcxR3vX6twIOVFAM/RYcaRZ7iboZiarxNPmNrbd6kEUOpboPoex[/tex][tex=13.786x2.714]sYg1w+65ZFTHb7x4KdKV+qVjvIXTZpT34kNgbs57GssGYPNWS3YFK/Df4899Cy3IiQDcANNCAvmK3qr4J0dQxHhLLZ73XLbHAY6VSIeCFzyuGFXH3MgWhQWnWTVjcfHu[/tex][tex=12.929x2.429]osM0mZZEK2C0Lsox52WlX7y2cxZgaY0HSTMdbqcZY81t0aVXfwXGuGQn+SOYl94K3N3gw6+UrmT9Hu5pZecaKA==[/tex][tex=3.714x1.357]BBGUbvDT/D2eZH/tF1hmHg==[/tex][tex=8.214x1.357]VEj/4fmnUIzEQbSF5yuuNGlRGjaWURnwjyIa9ErRUEKdeRywkhpZ9kjW5M+cp5cj[/tex][tex=15.5x1.5]x6rHsbmJHDP9t+IanICEerKIz7SqUAbRWBe9Rjcn9t0SovTxMkCISr4omEbkW6zM+4icQLntPUC5DL9+JbzICA==[/tex]所以[tex=18.0x5.571]cK8KsaWY0ZmKUAOEI/E6IQzTqD2d7oJcNeWlc1Iyslwz1jurCElxsf7LJD6RBfJc/nISdfr7DvPeaO32z/yhrbAYciGXAFhFxNjvHO8G7x7G1AYfhbgMdIX76pX8hNu9X5352ZhWDoylt370YptmInjBr356A5CGV5K7ETlEpI1iT3Fsl8I2vbHX2YLtZqoiQKJzSg3G38cFVP7czvW4OY6vKa2uMYdnZWG88YnqCw2NUMT8li6Zs74y5ZQ1obvpPOgsEgCSeYEay4BDUwlS+mEbqDwm8vDmwvmJp1rxKKk=[/tex]([tex=0.429x0.929]r8lLiDb0KHTzu/2y/Au89w==[/tex]的单位为[tex=1.357x0.786]Do+sxCTDyKLmHNzOzeJ2/Q==[/tex])[tex=16.857x5.143]bq5lr7GTMII8Mqp+hnGWmpw1j9+dVWHoy4Ea4yeoeM/VnUDQAh8QsRDzniM67XMdSgPg2pNsZEFvy73xA0+Io7znshfOpewgpdFI/nbHbCzfMFiAqd3KpS1xNFxHthe4YIkLPYNvA/iZ+paozj37ksXtKta5dasixs8pDJvSBJJSytKfVYPNATRQwJ5uy2+T8BkFjvzWKS634Op/FeBn4clLmTsz4RuVh+nymgTTY3cFOdyLQGeHhSak7nohJzmYaRNvjAv+iNOV47rCPwmkFg==[/tex]([tex=0.429x0.929]r8lLiDb0KHTzu/2y/Au89w==[/tex]的单位为[tex=1.357x0.786]Do+sxCTDyKLmHNzOzeJ2/Q==[/tex])电容电流[tex=1.786x1.357]qSVMjUNpaQ0vhg34i8WdkQ==[/tex]也可根据[tex=4.143x2.429]y3qg1Q0qnlE2XRsTyBvdnc8chVFAH6wDNiDKfqTvGxM=[/tex]来求得。[tex=2.071x1.357]g1QkHMNmfq98JrBxthMdHg==[/tex]和[tex=1.786x1.357]qSVMjUNpaQ0vhg34i8WdkQ==[/tex] 的波形图如图[tex=3.0x1.357]JQhDisw98w4x+2Fl9PNOzA==[/tex]所示。[img=833x470]1798e1524dd5771.png[/img]

    举一反三

    内容

    • 0

      在图12-10中,已知[tex=3.786x1.214]ghHjFIpbDRfRItjt3G7ajmgMChFwqHk9Anu128r2oz4=[/tex],[tex=5.571x1.214]OYYly/k3oQB3gedlnatvQA42Ng6BWIVRf/WleuW4M/I=[/tex],[tex=5.571x1.214]GM0pQrPmrkUwYG2R6GJJknDaAukYBec7/tsDE0LoTh8=[/tex],[tex=3.286x1.214]WfuFO5oisFoNqB1duW7dYw==[/tex]。换路钱电路已处于稳态,[tex=1.643x1.0]lux+jQCiU+AIUYEEPh47cg==[/tex]时开关S闭合。试求换路后的[tex=2.214x1.357]51BrCEjZO42osyZC9J93qAPUlU6QEAVoO/NkDXVE+4g=[/tex]和[tex=2.0x1.357]P4u6UFnTz1ovB7G8SnvE5ifTPNolMVmeGQtC/VBGAI8=[/tex]。[img=506x284]179a655be64b6bc.png[/img]

    • 1

      电路如题图所示,已知,[tex=6.714x1.214]FMyc/y5X1mKKUk++WtlBR5xxK/MdjhI4ciF3piu7GEQ=[/tex],[tex=3.143x1.214]yXCYRloQP0fQHaAQ+ada9Q==[/tex],试求:(1) 当开关[tex=0.643x1.0]jLbabU9pW65GUKemsNBJWw==[/tex]闭合瞬间的各电流值( [tex=0.643x1.0]jLbabU9pW65GUKemsNBJWw==[/tex]闭合前电路处于稳态);(2) 闭合后电路达到稳态时各电流值.[img=363x192]179991fa79dcd4d.png[/img]

    • 2

      电路如图所示。在[tex=1.643x1.0]e6RhHIicI4xKNcYb53RxjQ==[/tex]之前开关[tex=0.643x1.0]fYkALuFzYlFm0R716i1EGA==[/tex]位于[tex=0.5x1.0]oYgVDn+QZqcDCRxqEZwM2A==[/tex]端,电路已进入稳态。[tex=1.643x1.0]e6RhHIicI4xKNcYb53RxjQ==[/tex]时刻开关从[tex=0.5x1.0]oYgVDn+QZqcDCRxqEZwM2A==[/tex]转至[tex=0.5x1.0]8C7DKsr6nhrfCdsmGxO88g==[/tex]。试求[tex=9.643x1.286]kCkRXtgNGAwQaQhLwmjKGEy1EdNesU6VYZuppeKTYzVmPIJCi/li5zqLGhXSt5wk[/tex]时电容两端的电压[tex=2.143x1.357]DQ6tl6fQl7h37S2sv5jvcQ==[/tex]。[img=549x277]17a520a7c5053f8.png[/img]

    • 3

      [img=259x149]17ae725c2c52b84.png[/img]电路如图题所示, 当 [tex=1.643x1.071]LRAR0Ycy5AdxXCw33AK/oQ==[/tex]时, 电路元件无储能, 当[tex=1.643x1.0]MVeOYouc7e3FvU1m5bCV6w==[/tex]时, 开关闭合。求电压 [tex=2.0x1.357]ayzMfaebq+OEM2XKXmlIMA==[/tex]的表达式, 并画出 [tex=2.0x1.357]ayzMfaebq+OEM2XKXmlIMA==[/tex] 的波形。

    • 4

      龟路如图 1. 4. 38 所示,在开关[tex=0.643x1.0]jLbabU9pW65GUKemsNBJWw==[/tex]闭合前电路已处于稳态,求开关闭合后的电压[tex=1.143x1.0]COobowzLSkzn9yYIdZYGFg==[/tex]。[img=298x168]17964f1480884eb.jpg[/img]