| 摘要 |
PURPOSE:To allow the closing time of respective contactless switches to coincide with each other in a contactless switch circuit device consisting of plural contactless switches. CONSTITUTION:The contactless switch circuit device 10 consists of three contactless switches 1 (1A to 1C) each of which is provided with an input circuit 11 for judging the voltage level of an input voltage and outputting a control signal, a main circuit 13 having a bidirectional semiconductor switching element, e.g. a triode AC switch TRC, an ignition circuit 12 for outputting an ignition signal to the circuit 13 based upon the control signal outputted from the circuit 11, and a control signal terminal 14 for extracting the control signal outputted from the circuit 11 to the external and respective control signal terminals 14 are connected in parallel. |
