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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 button is pressed and makes contact when it is released. An example of a push-to-break switch is a button used to release a door held closed by an electromagnet.
A push-button (also spelled pushbutton) or simply button is a simple switch mechanism to control some aspect of a machine or a process. Buttons are typically made out of hard material, usually plastic or metal. [1] The surface is usually flat or shaped to accommodate the human finger or hand, so as to be easily depressed or pushed.
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 default position immediately afterwards, restoring the initial circuit condition. There are two types: [1]
Part of a relay interlocking using UK Q-style miniature plug-in relays. Railway signalling relays are large considering the mostly small voltages (less than 120 V) and currents (perhaps 100 mA) that they switch. Contacts are widely spaced to prevent flashovers and short circuits over a lifetime that may exceed fifty years.
The lid design is top-notch: press a button and the clear top piece springs back to reveal a sip or straw option. Snap open the protruding piece below the button and the entire lid lifts back for ...
The Novation Launchpad is an electronic music multi-button controller for the popular live control application Ableton Live, [1] featuring a grid of 64 (8x8) brightly illuminated square buttons. Each button can be assigned to a clip, (a piece of audio or MIDI that may or may not be looped).
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