| 摘要 |
PURPOSE:To attain high speed switching connection and to attain mminiaturization by connecting a switching output section comprising an operational amplifier, a coupling transformer and transistors (TRs) to an input and an output side of a multiplex device. CONSTITUTION:If a failure occurs in a multiplex device MDM1, a control section CONT outputs a control signal turning off a TRQ1 of a switching output section S1 and turning on a TRQS of a switching output section SS1. Thus, a current does not flow to the primary side of the coupling transformer T1 and the output of an operational amplifier OP1 is not outputted via the transformer T1. On the other hand, a current flows to the primary side of the coupling transformer TS of the output section SS1, an output of an operational amplifier OPS is outputted via the coupling tranformer and the device MDM1 is switched to a spare device MDMS. The device is switched to the device MDMS by constituting the input side similarly. |
