Optocoupler SPDT Switch Circuit

Published:2011/6/7 18:48:00 Author:Robert | Keyword: Optocoupler, SPDT Switch | From:SeekIC

The optocoupler SPDT switch circuit is shown in the picture below.The picture (a) is SPDT switch circuit and the external connected diode D's function is to assure the od group channels connected and ob group channels disconnected when inputting positive pulse signal. The picture (b) is DPDT switch circuit. When there is no input signal, the BG is disconnected. The ob and od groups are disconnected and the oa and oc groups are connected. When the BG is connected (when having input signal), ob and od groups are connected and oa and oc groups are disconnected. They are suit in automatic control use and remote control equipment use.



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