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  2. Bang–bang control - Wikipedia

    en.wikipedia.org/wiki/Bang–bang_control

    In control theory, a bang–bang controller (hysteresis, 2 step or on–off controller), is a feedback controller that switches abruptly between two states. These controllers may be realized in terms of any element that provides hysteresis. They are often used to control a plant that accepts a binary input, for example a furnace that is either ...

  3. Sail switch - Wikipedia

    en.wikipedia.org/wiki/Sail_switch

    A sail switch, vane switch or flow switch is a mechanical switch that is actuated on or off in response to the flow or non-flow of a fluid such as air or water. [1] A sail switch typically operates through the use of a paddle or a diaphragm which gets displaced due to the force of fluid or air moving past it.

  4. Induction heater - Wikipedia

    en.wikipedia.org/wiki/Induction_heater

    Induction heating is a non contact method of heating a conductive body by utilising a strong magnetic field.Supply (mains) frequency 50 Hz or 60 Hz induction heaters incorporate a coil directly fed from the electricity supply, typically for lower power industrial applications where lower surface temperatures are required.

  5. HVAC control system - Wikipedia

    en.wikipedia.org/wiki/HVAC_control_system

    After the control of air flow and temperature was standardized, the use of electromechanical relays in ladder logic to switch dampers became standardized. Eventually, the relays became electronic switches, as transistors eventually could handle greater current loads. By 1985, pneumatic controls could no longer compete with this new technology ...

  6. Upsets and QB feats: NFL playoff predictions for wild-card ...

    www.aol.com/upsets-qb-feats-nfl-playoff...

    The Vikings were nearly the NFC’s No. 1 seed, but this is a team that lived off one-score victories all year. You have to be good to do that, of course, but there’s an element of luck involved.

  7. Infinite switch - Wikipedia

    en.wikipedia.org/wiki/Infinite_switch

    An infinite switch, simmerstat, energy regulator or infinite controller is a type of switch that allows variable power output of a heating element of an electric stove. It is called "infinite" because its average output is infinitely variable rather than being limited to a few switched levels.

  8. Bears fire OC Shane Waldron; passing coordinator Thomas Brown ...

    www.aol.com/sports/bears-reportedly-fire-oc...

    The Chicago Bears have finally made a change after this weekend's awful 19-3 loss to the New England Patriots. The Bears announced Tuesday morning that offensive coordinator Shane Waldron is out ...

  9. Former national security adviser: ‘Until Hamas is destroyed ...

    www.aol.com/former-national-security-adviser...

    Former national security adviser H.R. McMaster argued that the ongoing conflict in Gaza will continue and life for Palestinians cannot improve “until Hamas is destroyed.” McMaster joined ...

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