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Hands-free phone kit fitted to a Saab 9-5.. Handsfree is an adjective describing equipment that can be used without the use of hands (for example via voice commands) or, in a wider sense, equipment which needs only limited use of hands, or for which the controls are positioned so that the hand can occupy themselves with another task (such as driving) without needing to hunt far afield for the ...
Crystal radios are the simplest type of radio receiver [2] and can be made with a few inexpensive parts, such as a wire for an antenna, a coil of wire, a capacitor, a crystal detector, and earphones (because a crystal set has insufficient power for a loudspeaker). [3]
The mixer with rotating parts was patented in 1856 by Baltimore, Maryland, tinner Ralph Collier. [1] This was followed by E.P. Griffith's whisk patented in England in 1857. Another hand-turned rotary egg beater was patented by J.F. and E.P. Monroe in 1859 in the US. [ 2 ]
1.0 — Basic remote control commands (play/pause/stop, etc.) [6] 1.3 — all of 1.0 plus metadata and media-player state support [7] The status of the music source (playing, stopped, etc.) Metadata information on the track itself (artist, track name, etc.). 1.4 — all of 1.3 plus media browsing capabilities for multiple media players [8]
[2] [4] [19] [33] The carborundum detector was popular [21] [33] because its sturdy contact did not require readjustment each time it was used, like the delicate cat whisker devices. [ 2 ] [ 19 ] [ 23 ] Some carborundum detectors were adjusted at the factory and then sealed and did not require adjustment by the user. [ 2 ]
The 2.5 mm or sub-miniature sizes were similarly popularized on small portable electronics. They often appeared next to a 3.5 mm microphone jack for a remote control on-off switch on early portable tape recorders; the microphone provided with such machines had the on-off switch and used a two-pronged connector with both the 3.5 and 2.5 mm plugs.
In electrical engineering, a limit switch is a switch operated by the motion of a machine part or the presence of an object. A limit switch can be used for controlling machinery as part of a control system, as a safety interlock, or as a counter enumerating objects passing a point. [1]
Egg-beater, egg beater, or eggbeater may refer to: Mixer (appliance), an electric kitchen appliance often referred to as an "egg-beater" Eggbeater (mixer), a hand-cranked tool for beating eggs, as for omelettes or cake-baking; Egg Beaters, an egg white–based ingredient used in cooking or baking; Eggbeater wind turbine, a wind turbine design