SPO 1-1 Given information from discussion, handouts, and reading materials, explain the pump operator's responsibilities to pump a supply line, given the length and size of line, flow and desired ...

Researchers have come up with a new type of nanoelectromechanical relay to enable reliable high-temperature, non-volatile memory. The work is an important development for all-electric vehicles and ...

Vishay Solid State Relay (SSR) outputs can be wired in parallel enabling the user to benefit from lower ONresistance and higher load current for ac/dc switching applications. This technique is also ...

This chapter covers representative general-purpose relays used in the control circuits of most industrial, commercial, and consumer products. Relay names and terminology are in accordance with ...

Rated to 110 A at 28 kV and 65 A at 25 kV, respectively, the G20 and G22 high-voltage relays come in SPST normally open configurations. The G22 features tungsten contacts to support hot-switching ...

Last column, I wrote about various applications where fire alarm relays could be used to integrate a commercial fire alarm system with other electrical systems at a customer’s site to provide them ...

Relays usually are driven using optocouplers, which offer isolation between analog and digital grounds to ensure that switching currents in the relay coils do not affect the noise margin of the ...

An RC circuit in series with the coil allows full-current turn-on for reliable relay operation, then reduces the current to save power. Fellow engineer Sanjay R. Chendvankar of Mumbai, India, recently ...

Protective relay testing verifies that installed relays will trip correctly under real fault conditions, confirming settings, ...