A wire spring relay is a type of relay, that has springs made from drawn wires of nickel silver, rather than cut from flat sheet metal as in the flat-spring...

computers used ordinary relays as a kind of latch—they store bits in ordinary wire-spring relays or reed relays by feeding an output wire back as an input,...

example, a reed relay matrix switch is normally switched with all contacts dry. After the contacts are all connected, a wire spring relay is energized and...

by wire spring relay logic. Such an electrically latching reed relay requires continuous power to maintain state, unlike magnetically latching relays, such...

including the N-carrier system, TD microwave radio relay, direct distance dialing, E-repeater, wire spring relay, and the Number Five Crossbar Switching System...

had difficulties handling large trunk groups. 5XB was converted to wire spring relays in the 1950s and otherwise upgraded in the 1960s to serve exchanges...

May 1965. The switching fabric was composed of a reed relay matrix controlled by wire spring relays which in turn were controlled by a central processing...

Western Electric crossbar telephone exchange (circa 1940), based on the wire-spring relay, suffered almost all the effects seen today - the ringing, crosstalk...

Ringdown features are often part of a key telephone system. In the wire spring relay key service units of the Bell System 1A2, a model 216 automatic ringdown...

The McBerty design used an early "wire spring relay" and welded piano wire interconnections rather than complex wire multiples. The system never achieved...

In electric power distribution and transmission, a Buchholz relay is a safety device mounted on some oil-filled power transformers and reactors, equipped...

Radio Relay League. p. 6.6. ISBN 978-087259996-3 – via Google Books. "The "almost random" wire antenna". kb6nu.com. 12 March 2007. "Random length wire". w0ipl...

"Montgomery Shops" were occupied in 1955 to produce Data-Phone data sets, wire spring relays, and test sets. Although, it was located in Montgomery, Illinois,...

engineering, a protective relay is a relay device designed to trip a circuit breaker when a fault is detected.: 4  The first protective relays were electromagnetic...

switch, reversing switch, relay, and circuit breaker. A common use is control of lighting, where multiple switches may be wired into one circuit to allow...

elements may be supported by steel or nichrome wires, so that no strain is placed on the element, but a spring may be included to increase the speed of parting...

Bell Telephone Laboratories in 1936 by Walter B. Ellwood into the reed relay. In its simplest and most common form, it consists of a pair of ferromagnetic...

A relay network is a broad class of network topology commonly used in wireless networks, where the source and destination are interconnected by means...

and open-source software and more than seven thousand volunteer-operated relays worldwide, users can have their Internet traffic routed via a random path...

A hot wire burn-off cleaning circuit is employed on some of these sensors. A burn-off relay applies a high current through the platinum hot wire after...

for large currents or high voltages are usually arranged with protective relay pilot devices to sense a fault condition and to operate the opening mechanism...

flexible, rugged and easily programmable controllers to replace hard-wired relay logic systems. Dick Morley, who invented the first PLC, the Modicon 084...

‘wire contact relays’ with the impulses de-coded according to the Hollerith code. (Mark Sense could not provide the current needed to ‘pick’ a wire contact...

bell consists of one or more electromagnets, made of a coil of insulated wire around an iron bar, which attract an iron strip armature with a clapper....

excess current. A coil of wire is used to heat a bimetal strip, which bends and operates a linkage that unlatches a spring-operated contact. This interrupts...

typically has power applied to each rail and a relay coil wired across them. When no train is present, the relay is energised by the current flowing from the...

In electrical engineering, a stepping switch or stepping relay, also known as a uniselector, is an electromechanical device that switches an input signal...

A mercury relay (mercury displacement relay, mercury contactor) is a relay that uses mercury as the switching element. They are used as high-current switches...

member of the relay squad without qualifying. His best chance was to try for a time of close to 46 seconds to make the 4 × 400-metre relay team. However...

the 800-yard freestyle relay with a 1:40.28 split to break the NCAA, American, and U.S. Open record in the 800-yard freestyle relay with Lia Neal, Katie...