| 摘要 |
PROBLEM TO BE SOLVED: To enable operation of a control object device even at a time of failure of a control side device in an insulation-type signal transmission device that performs insulation transmission of an electric signal in which a direct current signal and a communication signal are superposed from the control side device to the control object device.SOLUTION: An insulation-type signal transmission device performs insulation transmission of an electric signal in which a communication signal is superposed on a direct current signal from a control side device to a control object device. The insulation-type signal transmission device comprises a lower limit limiter circuit to output a lower limit direct current signal to the control object device if a direct current signal from a control device is below a prescribed lower limit value. |
