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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. Digifant engine management system - Wikipedia

   en.wikipedia.org/wiki/Digifant_Engine_Management...

   A Digifant II DF-1 Engine Control Unit used in '91 Volkswagen Golf Cabriolet with 2E engine. Digifant is an Engine Management System operated by an Engine Control Unit that actuates outputs, such as fuel injection and ignition systems, using information derived from sensor inputs, such as engine speed, exhaust oxygen and intake air flow. [1]

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. Vacuum delay valve - Wikipedia

   en.wikipedia.org/wiki/Vacuum_delay_valve

   These are commonly used in automobiles to alter the behavior of vacuum switches, vacuum motors, and other vacuum devices. The engine in a common automobile produces almost 20 inches of mercury (68 kPa ) of vacuum, and this pressure differential has been utilized for everything from automatic locks and windshield wipers to operating emissions ...

6. Commutator (electric) - Wikipedia

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

   A commutator is a rotary electrical switch in certain types of electric motors and electrical generators that periodically reverses the current direction between the rotor and the external circuit. It consists of a cylinder composed of multiple metal contact segments on the rotating armature of the machine.

7. Reed switch - Wikipedia

   en.wikipedia.org/wiki/Reed_switch

   After the final seal is made, the switch cools and the internal pressure is less than one atmosphere. Reed switches sealed with a pressurized nitrogen atmosphere have a higher breakdown voltage and are useful for switching 220–240 VAC mains power. Reed switches with a vacuum inside the glass envelope can switch thousands of volts.