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Forum: 70. Control Systems Wed 21 October 2009, 20:57
Replies: 27
Views: 52,271
Posted By Richards
Normally Closed switches are wired in SERIES to...

Normally Closed switches are wired in SERIES to signal ground. When inactive, they hold the input line LOW. When any switch is opened, the input line goes HIGH.

Normally Open switches are wired...
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