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  2. Power symbol - Wikipedia

    en.wikipedia.org/wiki/Power_symbol

    Power On (IEC 60417-5007) and Power Off (IEC 60417-5008) symbols are used to indicate positions of the rocker switch Power button marked with Standby symbol (IEC 60417-5009) turns the device on or off without fully disconnecting power supply. A power symbol is a symbol indicating that a control activates or deactivates a particular device.

  3. Switch - Wikipedia

    en.wikipedia.org/wiki/Switch

    A simple on-off switch: The two terminals are either connected together or disconnected from each other. An example is a light switch. SPST-NO. Form A [4] Single pole, single throw, normally open A simple on-off switch. The two terminals are normally disconnected (open) and are closed when the switch is activated. An example is a pushbutton ...

  4. Electronic switch - Wikipedia

    en.wikipedia.org/wiki/Electronic_switch

    The most widely used electronic switch in digital circuits is the metal–oxide–semiconductor field-effect transistor (MOSFET). [2] The analogue switch uses two MOSFET transistors in a transmission gate arrangement as a switch that works much like a relay, with some advantages and several limitations compared to an electromechanical relay.

  5. On- and off-hook - Wikipedia

    en.wikipedia.org/wiki/On-_and_Off-hook

    The term off-hook has the following meanings: The condition that exists when a telephone or other user instrument is in use, i.e., during dialing or communicating. A general description of one of two possible signaling states at an interface between telecommunications systems, [ 1 ] such as tone or no tone and ground connection versus battery ...

  6. On-off - Wikipedia

    en.wikipedia.org/wiki/On-off

    On-off or Onoff may refer to: On-off control, a type of feedback controller; On-off keying, a type of line modulation; On-off relationship, a form of personal relationship; On-Off Singles, a type of tennis game; On-off switch, a type of electric switch; Onoff (retailer), an electronics retailer in Estonia, formerly also active in Sweden and Finland

  7. The Clapper - Wikipedia

    en.wikipedia.org/wiki/The_Clapper

    The Clapper is a sound-activated electrical switch, [1] sold since 1984 by San Francisco, California based Joseph Enterprises, Inc. Joseph Pedott marketed the clapper with the slogan "Clap On! Clap Off! The Clapper!". [2] The Clapper plugs into a U.S.-type electrical outlet, and allows control of up to two devices plugged into the Clapper. [3]

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