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Encyclopedia > Voltage regulation

In electrical engineering, particularly power engineering, voltage regulation is the ability of a system to provide near constant voltage over a wide range of load conditions. It is a dimensionless quantity defined as: Electrical Engineers design power systems… … and complex electronic circuits. ... This article or section does not cite its references or sources. ... International safety symbol Caution, risk of electric shock (ISO 3864), colloquially known as high voltage symbol. ... Load may mean: Look up Load in Wiktionary, the free dictionary. ... In the physical sciences, a dimensionless number (or more precisely, a number with the dimensions of 1) is a quantity which describes a certain physical system and which is a pure number without any physical units; it does not change if one alters ones system of units of measurement...

VR = frac{V_{nl} - V_{fl}}{V_{fl}} times 100%

where Vnl is voltage at no load and Vfl is voltage at full load. A smaller value of VR is usually beneficial.


Sometimes, the term voltage regulation is used to describe processes by which the quantity VR is reduced, especially concerning special circuits and devices for this purpose, voltage regulators. Voltage regulators are an important part of power systems and power supplies. A wall wart style variable DC power supply with its cover removed. ...


See also

terms = voltage Electronic symbol for Voltage regulator A voltage regulator is an electrical regulator designed to automatically maintain a constant voltage level. ...


  Results from FactBites:
 
voltage regulator - definition of voltage regulator in Encyclopedia (609 words)
Early automobile generators and alternators had a mechanical voltage regulator using three or two relays and ballast resistors to stabilize the generator's output on 6 or 12 V, independent of the engine's rpm.
Common solid-state series voltage regulators are the LM78xx (for positive voltages) and LM79xx (for negative voltages), and common fixed voltages are 5 V (for transistor-transistor logic circuits) and 12 V, e.g.
In fixed voltage regulators the reference pin is tied to ground, whereas in variable regulators the reference pin is connected to the centre point of a fixed or variable voltage divider fed by the regulator's output.
  More results at FactBites »


 

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