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  2. Float switch - Wikipedia

    en.wikipedia.org/wiki/Float_switch

    A pedestal sump pump with a float switch. A float switch is a type of level sensor, a device used to detect the level of liquid within a tank. The switch may be used to control a pump, as an indicator, an alarm, or to control other devices. One type of float switch uses a mercury switch inside a hinged float. Another common type is a float that ...

  3. A Symbolic Analysis of Relay and Switching Circuits

    en.wikipedia.org/wiki/A_Symbolic_Analysis_of...

    The utilization of the binary properties of electrical switches to perform logic functions is the basic concept that underlies all electronic digital computer designs. Shannon's thesis became the foundation of practical digital circuit design when it became widely known among the electrical engineering community during and after World War II.

  4. Switch - Wikipedia

    en.wikipedia.org/wiki/Switch

    Switches can be designed to respond to any type of mechanical stimulus: for example, vibration (the trembler switch), tilt, air pressure, fluid level (a float switch), the turning of a key , linear or rotary movement (a limit switch or microswitch), or presence of a magnetic field (the reed switch). Many switches are operated automatically by ...

  5. Mercury switch - Wikipedia

    en.wikipedia.org/wiki/Mercury_switch

    A mercury switch is an electrical switch that opens and closes a circuit when a small amount of the liquid metal mercury connects metal electrodes to close the circuit. There are several different basic designs (tilt, displacement, radial, etc.) but they all share the common design strength of non-eroding switch contacts.

  6. Switching control techniques - Wikipedia

    en.wikipedia.org/wiki/Switching_Control_Techniques

    On one hand, intervening on the source is possible by using switching control techniques (increasing the efficiency), redesigning the circuit (costly and time demanding) and using soft switching transition. On the other hand, by adding external or internal filters (also costly) it is possible to address the propagation path. Fig. 1.

  7. Shapiro orders short-term fix for SEPTA - AOL

    www.aol.com/shapiro-orders-short-term-fix...

    This should hold the transit system over until July 1, at which point he expects the legislature to have come up with a longer-term solution. Even with additional funding, Shapiro orders short ...

  8. Donald Trump's transition team wants to scrap a car crash ...

    www.aol.com/news/donald-trumps-transition-team...

    The Trump transition team wants the incoming administration to drop a car-crash reporting requirement opposed by Elon Musk’s Tesla.

  9. How to avoid bankruptcy in retirement — and safeguard your ...

    www.aol.com/finance/avoid-bankruptcy-in...

    3. Plan your withdrawal strategy. Most retirement strategies plan for saving, not spending. So it’s not always easy to remember that there will come a time you have to spend the money you’ve ...