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Push-to-break switch electronic symbol Push-to-make switch electronic symbol. A push switch (button) is a momentary or non-latching switch which causes a temporary change in the state of an electrical circuit only while the switch is physically actuated. An automatic mechanism (i.e. a spring) returns the switch to its
A latching switch is a switch that maintains its state after being activated. [1] A push-to-make, push-to-break switch would therefore be a latching switch – each time you actuate it, whichever state the switch is left in will persist until the switch is actuated again. [2]
The most common type is a "push-to-make" (or normally-open or NO) switch, which makes contact when the button is pressed and breaks when the button is released. Each key of a computer keyboard, for example, is a normally-open "push-to-make" switch. A "push-to-break" (or normally-closed or NC) switch, on the other hand, breaks contact when the ...
This category is for types of, or articles related to, electrical switch; see that article for an overview. Note that there are also other meanings of "switch", which are not covered by this category - see switch (disambiguation) .
When the contacts touch, the switch is closed; when the contacts are separated, the switch is open. The gap must be an insulating medium, such as air, vacuum, oil, SF 6 . Contacts may be operated by humans in push-buttons and switches , by mechanical pressure in sensors or machine cams, and electromechanically in relays.
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