| 摘要 |
PURPOSE:To output an input signal in a balance differential shape of H and L states and to improve an S/N ratio by converting the input signal to an AC signal by a clock, rectifying the AC signal outputted through a pulse transformer, and also applying the rectified switch switching signal to a switch part. CONSTITUTION:Input data is converted to an AC signal by synchronizing with a clock by a circuit consisting of an inverter 27, AND gates 28, 29 of an open collector, and pulse tranformers 30, 31. This AC signal is rectified by rectifying circuits 32, 33, and when switch changeover signals 34, 35 are in an H state, switch parts 38, 27 are set to an on-state, respectively. Also, a DC output A of the circuit 32 is provided to one end of the switch part 37 and an external load 41, a DC output B of the circuit 33 is provided to one end of the switch part 38 and the load 41, and the other ends of the switch parts 37, 38 are connected to the negative pole side of the circuits 32, 33. In this state, the input data is supplied to the load 41 as an output of a balance differential shape of H and L states, and the influence of a noise is offset. |
