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2. A Symbolic Analysis of Relay and Switching Circuits

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

   A Symbolic Analysis of Relay and Switching Circuits is the title of a master's thesis written by computer science pioneer Claude E. Shannon while attending the Massachusetts Institute of Technology (MIT) in 1937, [1] [2] and then published in 1938.

3. Relay - Wikipedia

   en.wikipedia.org/wiki/Relay

   A relay Electromechanical relay principle Electromechanical relay schematic showing a control coil, four pairs of normally open and one pair of normally closed contacts An automotive-style miniature relay with the dust cover taken off. A relay is an electrically operated switch. It consists of a set of input terminals for a single or multiple ...

4. Liquid rheostat - Wikipedia

   en.wikipedia.org/wiki/Liquid_rheostat

   Liquid rheostats used as motor start switches, circa 1900. A liquid rheostat or water rheostat [1] or salt water rheostat is a type of variable resistor.This may be used as a dummy load or as a starting resistor for large slip ring motors.

5. Aircraft engine starting - Wikipedia

   en.wikipedia.org/wiki/Aircraft_engine_starting

   The Hucks starter (invented by Bentfield Hucks during WWI) is a mechanical replacement for the ground crew. Based on a vehicle chassis the device uses a clutch driven shaft to turn the propeller, disengaging as the engine starts. A Hucks starter is used regularly at the Shuttleworth Collection for starting period aircraft. [3]

6. EMC E1 - Wikipedia

   en.wikipedia.org/wiki/EMC_E1

   The EMC E1 was an early passenger-train diesel locomotive developing 1,800 hp, with an A1A-A1A wheel arrangement, and manufactured by Electro-Motive Corporation of La Grange, Illinois. They were built during 1937 and 1938 for the Atchison, Topeka and Santa Fe Railway for a new generation of diesel -powered streamlined trains. 8 cab-equipped ...

7. Numerical relay - Wikipedia

   en.wikipedia.org/wiki/Numerical_relay

   Protective relay. In utility and industrial electric power transmission and distribution systems, a numerical relay is a computer-based system with software-based protection algorithms for the detection of electrical faults. [1] Such relays are also termed as microprocessor type protective relays.

8. EMD E-unit - Wikipedia

   en.wikipedia.org/wiki/EMD_E-unit

   The EA/EB, E1, and E2 models were powered by twin 900 hp Winton 201A V-12 engines in each power unit. They were standardized mechanically and in overall design. Union Pacific's E2 cab unit was distinguished from the slant-nosed EA and E1 units by its bulbous nose, round porthole style windows, and stainless steel ornamentation on the pilot and ...

9. Enterprise and Data Center Standard Form Factor - Wikipedia

   en.wikipedia.org/wiki/Enterprise_and_Data_Center...

   EDSFF SSDs come in four form factors: E1.L (Long) and E1.S (Short), which fit vertically in a 1u server, and E3.L and E3.S, which fit vertically in a 2u server. [2] E3.S is approximately the size of an 2.5 inch (U.2) drive. [3] Samsung's NGSFF (also known as M.3 or NF1) form factor competes with EDSFF. [4]