增大电容C增大电阻R2
举一反三
- 如果想要减小矩形波发生电路的周期,可以调节哪些参数?http://edu-image.nosdn.127.net/D8F18856239F5E6637AAEB6C7F1758AC.PNG?imageView&thumbnail=890x0&quality=100
- 矩形波发生电路中,如果增大电阻RF的数值,则矩形波的周期和占空比如何变化?http://edu-image.nosdn.127.net/755A908C409F66E3D1C93F464A2C445B.PNG?imageView&thumbnail=890x0&quality=100
- 中国大学MOOC: 矩形波-锯齿波产生电路如图所示,若希望仅增大矩形波的占空比,可以________。http://edu-image.nosdn.127.net/56B0BFB9FFBB8188F2ED90F764B16DD2.png?imageView&thumbnail=890x0&quality=100
- 如果想要增大矩形波发生电路的周期,可以调节哪些参数?[img=846x719]180379852586462.png[/img] A: 增大电容C B: 增大电阻RF C: 增大电阻R3 D: 增大电阻R2 E: 增大电阻R1
- 中国大学MOOC: 实腹式轴压杆绕x,y轴的长细比分别为http://edu-image.nosdn.127.net/CEDDCE7A3BB52B52DC56A37DE9DF8675.png?imageView&thumbnail=890x0&quality=100,http://edu-image.nosdn.127.net/2715192C2D5C066B84F9EEC130D1DD78.png?imageView&thumbnail=890x0&quality=100,对应的稳定系数分别为http://edu-image.nosdn.127.net/051E7EF77A20CC8EE7AE73090D7D0B9F.png?imageView&thumbnail=890x0&quality=100,http://edu-image.nosdn.127.net/CDC96ACA4577E26B3DE9DBF3AFBCEC46.png?imageView&thumbnail=890x0&quality=100,若http://edu-image.nosdn.127.net/991E5D4B35F3193105567CAF1B1CB1EC.png?imageView&thumbnail=890x0&quality=100,则( ) 。
内容
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中国大学MOOC: 下图中,若http://edu-image.nosdn.127.net/3CC508F9AB3640FC7B4FC8A56BCC3C4A.png?imageView&thumbnail=890x0&quality=100,http://edu-image.nosdn.127.net/1E98E4093ED9A9CF99D5410CB4F9E5FC.png?imageView&thumbnail=890x0&quality=1000011,求http://edu-image.nosdn.127.net/C431073D6B6C788B674E11D5E7EA9B8F.png?imageView&thumbnail=890x0&quality=100( )。http://edu-image.nosdn.127.net/3F2606B33B97941F5DFADC9F32BD58AD.png?imageView&thumbnail=890x0&quality=100
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一阶低通和高通滤波电路的特征频率http://edu-image.nosdn.127.net/7E7F1055858242AC1846E34707EA3848.png?imageView&thumbnail=890x0&quality=100与通带截止频率http://edu-image.nosdn.127.net/5EC1781C90A066C15C4A6AFF6EF983C2.png?imageView&thumbnail=890x0&quality=100相等;而高阶低通和滤波电路的http://edu-image.nosdn.127.net/3ED720FB1F05ABA1F9079DE5B7F791B8.png?imageView&thumbnail=890x0&quality=100http://edu-image.nosdn.127.net/F711F7FB9E8D3C851ACAABB02F5C6EE7.png?imageView&thumbnail=890x0&quality=100http://edu-image.nosdn.127.net/865F0785FF3D04AFFC7A9E21B34598FD.png?imageView&thumbnail=890x0&quality=100。
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下图电路中,如果uI为三角波,则uo为( )。http://edu-image.nosdn.127.net/64536669C0AA7D1D51E435B972A57222.PNG?imageView&thumbnail=890x0&quality=100
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中国大学MOOC: 下列取代羧酸中酸性最强的是()。http://edu-image.nosdn.127.net/7C237BDF245EC393A5506C4874523609.png?imageView&thumbnail=890x0&quality=100、http://edu-image.nosdn.127.net/EFA954264582A372C3C9085E40BE80E9.png?imageView&thumbnail=890x0&quality=100、http://edu-image.nosdn.127.net/926CD4F17B92218A7FF5D06D34C5CAAF.png?imageView&thumbnail=890x0&quality=100、http://edu-image.nosdn.127.net/6504083F25D32BC8A95C11AC770935E2.png?imageView&thumbnail=890x0&quality=100
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图示电路中,欲增大UCEQ,可以通过增大RB1的方法来实现( )。http://edu-image.nosdn.127.net/A6B4E2FBA615D5F373EED51C9C951363.jpg?imageView&thumbnail=890x0&quality=100