12.3 CONTACT DETECTION At times we want to know when a physical object is present. This may involve touch. 12.3.1 Contact Switches Normally open/normally closed 12.3.2 Reed Switches These switches are like relays, but using a moving permanent magnet.
At times we want to know when a physical object is present. This may involve touch.
Normally open/normally closed
These switches are like relays, but using a moving permanent magnet.
