| 摘要 |
PROBLEM TO BE SOLVED: To provide a capacitance-coupled or transformer-coupled isolation circuit that transmits a DC signal and an AC signal over a single transmission path.SOLUTION: In a capacitance-coupled isolation circuit 1, 1A, an input side circuit 2 sends out a first voltage pulse whose voltage value rises or falls sharply from a standard voltage and then returning gradually to the standard voltage at the timing of a leading edge of an input signal IN. The input side circuit 2 sends out a second voltage pulse whose voltage value rises or falls sharply from the standard voltage in the opposite direction to the first voltage pulse and then returning gradually to the standard voltage at the timing of a trailing edge of the input signal IN. |
