求解時間常數問題 - 考試
By Dora
at 2017-09-02T14:36
at 2017-09-02T14:36
Table of Contents
如圖所示,請問小弟算的是否正確?
1.S閉合時求Rth,電容視為短路,電壓源也是短路,所以R只剩下12K那個,RC=12秒
2.代入公式得答案
3.S切斷,12K開路,RC=6秒
4.5倍時間常數=30秒,30秒後放電完畢。
請問以上是正確的嗎?
https://i.imgur.com/oJPjyga.jpg
--
1.S閉合時求Rth,電容視為短路,電壓源也是短路,所以R只剩下12K那個,RC=12秒
2.代入公式得答案
3.S切斷,12K開路,RC=6秒
4.5倍時間常數=30秒,30秒後放電完畢。
請問以上是正確的嗎?
https://i.imgur.com/oJPjyga.jpg
--
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