photosensitive circuit of automatic batch scale ZD—30C and ZD-30D

Published:2011/5/16 3:35:00 Author:chopper | Keyword: automatic batch scale, photosensitive | From:SeekIC

When light is dark,the dark-current is tiny,and 3DG6 as well as 3DG12 stops.The relay is of attonity.When the light is available,3DG6 as well as 3DG1 is conductive and relay actuates.Blanking door is controlled by the relay to realize the purpose that controlling baiting as the desired value.2CP12 is used to prevent the back-emf made by the release of relay.This automatic batch scale can fix value by scale mark of 0.5kg between 0 and30kg.The precision can reach one in a thousand.



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