Electronics and Kinetics Technical Resource Display Case
Electronic display object #
4
Roller type Microswitch                 

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Microswitches can be but are not necessaily small. This one is not. Microswitces are momentary, that is they switch when pressed and held down. Microswitches are for interacting with moving parts of machines or other types of structures. The bit of aluminum in the demo presses on the switch roller and turns the light on.

Roller type Microwitches are available at  some electrical and electronic supply houses.  See the sources page for possible vendors.
 
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