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A typical volume of Bell System Practices from the 1970s. The Bell System Practices (BSPs) is a compilation of technical publications which describes the best methods of engineering, constructing, installing, and maintaining the telephone plant of the Bell System under direction of AT&T and Bell Telephone Laboratories. [1]
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A bell pull is a woven textile, pull cord, handle, knob, or other object that connects with a bell or bell wire, and which rings a service bell when pulled. Bell pulls may be used to summon workers in homes of people who employ butlers , housemaids , nannies or other domestic workers , [ 1 ] [ 2 ] and often have a tassel at the bottom. [ 3 ]
The most widely used form is the interrupter bell, which is a mechanical bell that produces a continuous sound when current is applied. See animation, above. The bell or gong (B), which is often in the shape of a cup or half-sphere, is struck by a spring-loaded arm (A) with a metal ball on the end called a clapper, actuated by an electromagnet ...
Effectively, a headphone amplifier is a small power amplifier that can be connected to a standard headphone jack or the line output of an audio source. Electrically, a headphone amplifier can be thought of as an amplifier that presents a very high input impedance (ideally infinite) and presents a lower output impedance (ideally zero) and larger ...
In order to provide a cable stop for front cantilever brakes or centerpull brakes, a hanger may be incorporated into the headset, either as part of the washer between the top race and the lock nut in the case of threaded headsets, or as part of a spacer between the top race and the stem in the case of threadless headsets.
A Twitch streamer was left stunned after he livestreamed himself shaving his hair for charity, only to find an indent on his head from wearing his gaming headset.. The gamer, who goes by Curtoss ...
American Bell refers to two entities that were associated with the Bell System. Bell Telephone Company, at one time known as American Bell Telephone Company, ...