A floating ground, is one where the zero volt reference level of the system is isolated from anything else. If two systems which use floating grounds are to be electrically conected, then the 0v reference of each system must be contected to each other.

老大,這樣看我還是挺困惑的.
只要是隔離于其他的0v電壓點,都算是浮動地嗎?

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謝謝~