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2. 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.

3. 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 ...

4. 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 ...

5. IEC 60320 - Wikipedia

   en.wikipedia.org/wiki/IEC_60320

   A variety of different kinds of IEC 60320 plugs and sockets. IEC 60320 Appliance couplers for household and similar general purposes [1] is a set of standards from the International Electrotechnical Commission (IEC) specifying non-locking connectors for connecting power supply cords to electrical appliances of voltage not exceeding 250 V (a.c.) and rated current not exceeding 16 A. [1 ...

6. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

7. Heating element - Wikipedia

   en.wikipedia.org/wiki/Heating_element

   A heating element is a device used for conversion of electric energy into heat, consisting of a heating resistor and accessories. [1] Heat is generated by the passage of electric current through a resistor through a process known as Joule heating .

8. Congo says mysterious disease killing dozens of kids finally ...

   www.aol.com/congo-says-mysterious-disease...

   At least 592 cases were reported after the alert was first raised by Congo's health ministry on Oct. 29. The ministry said the disease had a fatality rate of 6.25%.

9. “Rust” Director Who Survived Bullet Wound Says Resuming ...

   www.aol.com/rust-director-survived-bullet-wound...

   Alec Baldwin's movie Rust premiered at Poland's Camerimage Festival on Nov. 19, more than three years after its cinematographer Halyna Hutchins died on Oct. 21, 2021, after a prop gun Baldwin held ...