| 摘要 |
PROBLEM TO BE SOLVED: To transmit a signal from an external circuit to an internal circuit on a printed circuit board in a noncontact manner, without using an insulating-dedicated passive component such as a transformer, an isolator, and a photocoupler.SOLUTION: An insulating circuit 110 receives a rectangular-wave signal (AC signal) intended to transmit a digital signal as a signal (input signal 101) by a primary-side circuit 131. The insulating circuit 110 transmits the signal inputted to the primary-side circuit 131 from a primary-side signal line pattern 111 to a secondary-side signal line pattern 112 by electromagnetic induction. The insulating circuit 110 outputs the signal transmitted to the secondary-side signal line pattern 112 from a secondary-side circuit 132 to a waveform-shaping circuit 120. The waveform-shaping circuit 120 forms the waveform of the signal outputted from the secondary-side circuit 132 into a rectangular wave and generates a rectangular-wave signal (output signal 102). |
