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  2. Light switch - Wikipedia

    en.wikipedia.org/wiki/Light_switch

    A toggle light switch Internal components of a toggle switch. The toggle mechanism provides "snap-action" through the use of an "over-center" geometry. The design was patented in 1916 by William J. Newton and Morris Goldberg. [2] The switch actuator does not control the contacts directly, but through an intermediate arrangement of springs and ...

  3. Electricity on Shabbat - Wikipedia

    en.wikipedia.org/wiki/Electricity_on_Shabbat

    It is not permitted to open the door if the light will turn on because, unlike with the motor running, the light turning on is a Biblical prohibition whereas the motor running may be a Rabbinic prohibition, and also, the light is turned on immediately as an effect of opening the refrigerator whereas the motor turning on is an indirect effect.

  4. Bistability - Wikipedia

    en.wikipedia.org/wiki/Bistability

    Light switch, a bistable mechanism. In a dynamical system, bistability means the system has two stable equilibrium states. [1] A bistable structure can be resting in either of two states. An example of a mechanical device which is bistable is a light switch. The switch lever is designed to rest in the "on" or "off" position, but not between the ...

  5. Switch - Wikipedia

    en.wikipedia.org/wiki/Switch

    A switch may be directly manipulated by a human as a control signal to a system, such as a computer keyboard button, or to control power flow in a circuit, such as a light switch. Automatically operated switches can be used to control the motions of machines, for example, to indicate that a garage door has reached its full open position or that ...

  6. Wireless light switch - Wikipedia

    en.wikipedia.org/wiki/Wireless_light_switch

    Dimmer light switch with RF-based remote control [1] A wireless light switch is a light switch that commands a light or home appliance to turn itself off or on, instead of interrupting the power line going to the light fixture. There are different ways to communicate between the switch and the fixture: [2]

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  8. Magnetic starter - Wikipedia

    en.wikipedia.org/wiki/Magnetic_starter

    Unlike machines with an ordinary latching switch (such as a common light switch), when the power is resumed the machine will not operate until being turned on again. As a result, magnetic starters often use momentary switches for "off" and "on" functions, as this type of switch returns to a defined normal position when released. Latching ...

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    Get answers to your AOL Mail, login, Desktop Gold, AOL app, password and subscription questions. Find the support options to contact customer care by email, chat, or phone number.