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  2. Vacuum interrupter - Wikipedia

    en.wikipedia.org/wiki/Vacuum_interrupter

    After the 1970s, vacuum switches began to replace the minimal-oil switches in medium-voltage switchgear. In the early 1980s, SF6 switches and breakers were also gradually replaced by vacuum technology in medium-voltage application. As of 2018, a vacuum circuit breaker had reached 145 kV and the breaking current had reached 200 kA. [4]

  3. Commutator (electric) - Wikipedia

    en.wikipedia.org/wiki/Commutator_(electric)

    Commutator in a universal motor from a vacuum ... A commutator is a rotary electrical switch in certain types of electric ... notable for having an adjustable speed ...

  4. Vacuum switch - Wikipedia

    en.wikipedia.org/wiki/Vacuum_switch

    It received vacuum (port E on the switch) from the carburetor. The vacuum flowed through the switch to a vacuum solenoid (such as a heat riser, used to restrict exhaust allowing the engine to heat up faster). When the coolant heated to operating temperature the vacuum switch closed off the port (port S on the vacuum switch) turning off the ...

  5. Switched-mode power supply - Wikipedia

    en.wikipedia.org/wiki/Switched-mode_power_supply

    Stand-alone switched-mode power supply An adjustable switched-mode power supply for laboratory use. A switched-mode power supply (SMPS), also called switching-mode power supply, switch-mode power supply, switched power supply, or simply switcher, is an electronic power supply that incorporates a switching regulator to convert electrical power efficiently.

  6. Circuit breaker - Wikipedia

    en.wikipedia.org/wiki/Circuit_breaker

    Circuit breakers with higher ratings can have adjustable trip settings, allowing fewer standardized products to be used, adjusted to the applicable precise ratings when installed. For example, a circuit breaker with a 400 ampere frame size might have its over-current detection threshold set only 300 amperes where that rating is appropriate.

  7. Our pick for best stick vacuum is down to its all-time ... - AOL

    www.aol.com/lifestyle/our-pick-for-best-stick...

    This vacuum is lightweight, very maneuverable and has excellent suction. Perhaps my favorite feature is the dirt detection that controls the motor speed, helping to prolong battery life ...

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