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Railways commonly used salt water load banks in the 1950s to test the output power of diesel-electric locomotives. [3] They were subsequently replaced by specially designed resistive load banks. Some early three-phase AC electric locomotives also used liquid rheostats for starting up the motors and balancing load between multiple locomotives. [4]
The measuring instrument called a potentiometer is essentially a voltage divider used for measuring electric potential (voltage); the component is an implementation of the same principle, hence its name. Potentiometers are commonly used to control electrical devices such as volume controls on audio equipment. It is also used in speed control of ...
The L pad attenuates the signal by having two separate rheostats connected in an "L" configuration (hence the name). One rheostat is connected in series with the loudspeaker and, as the resistance of this rheostat increases, less power is coupled into the loudspeaker and the loudness of sound produced by the loudspeaker decreases.
Original salt water dimmers mounted on the wall in the wings of Alexandra Palace Theatre. Salt water dimmers, which are an early example of liquid rheostats, were used in theatres after the introduction of electric stage lighting to control the brightness of the lights on stage.
From the plural form: This is a redirect from a plural noun to its singular form.. This redirect link is used for convenience; it is often preferable to add the plural directly after the link (for example, [[link]]s).
A wound-rotor motor can be used in several forms of adjustable-speed drive. Common applications include hoists and conveyor systems. Common applications include hoists and conveyor systems. Certain types of variable-speed drives recover slip-frequency power from the rotor circuit and feed it back to the supply, allowing wide speed range with ...
The most common approach to power attenuation is a power soaker, which absorbs a portion of the power and dissipates it as heat. This device connects between the amplifier output and the guitar speaker. A typical attenuator circuit is the L pad. A variable L pad is a power divider circuit that provides an adjustable power level to a speaker ...
used to make phosphate esters such as tricresyl phosphate: Potassium dichromate: a common inorganic chemical reagent, most commonly used as an oxidizing agent in various laboratory and industrial applications Potassium hydroxide: a strong base; precursor to most soft and liquid soaps as well as numerous potassium-containing chemicals
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