Regulator may refer to:

Technology

* Regulator (automatic control), a device that maintains a designated characteristic, as in: ** Battery regulator **

Pressure regulator A pressure regulator is a valve that controls the pressure of a fluid or gas to a desired value, using negative feedback from the controlled pressure. Regulators are used for gases and liquids, and can be an integral device with a pressure setti ...

Diving regulator A diving regulator is a pressure regulator that controls the pressure of breathing gas for diving. The most commonly recognised application is to reduce pressurized breathing gas to ambient pressure and deliver it to the diver, but there are als ...

Voltage regulator A voltage regulator is a system designed to automatically maintain a constant voltage. A voltage regulator may use a simple feed-forward design or may include negative feedback. It may use an electromechanical mechanism, or electronic components ...

* Regulator (sewer), a control device used in a combined sewer system * Regulator, a device in mechanical watches attached to the

balance spring A balance spring, or hairspring, is a spring attached to the balance wheel in mechanical timepieces. It causes the balance wheel to oscillate with a resonant frequency when the timepiece is running, which controls the speed at which the wheels of ...

for adjusting the rate of the balance wheel * Regulator precision

pendulum clock A pendulum clock is a clock that uses a pendulum, a swinging weight, as its timekeeping element. The advantage of a pendulum for timekeeping is that it is a harmonic oscillator: It swings back and forth in a precise time interval dependent on i ...

, originally used as a time-standard for adjusting or ''regulating'' other clocks and watches * Regulator, the

throttle A throttle is the mechanism by which fluid flow is managed by constriction or obstruction. An engine's power can be increased or decreased by the restriction of inlet gases (by the use of a throttle), but usually decreased. The term ''throttle'' ...

of a steam engine * Regulator, a component of

Uilleann pipes The uilleann pipes ( or , ) are the characteristic national bagpipe of Ireland. Earlier known in English as "union pipes", their current name is a partial translation of the Irish language terms (literally, "pipes of the elbow"), from thei ...

, a form of bagpipes

Science

Regulator (mathematics) In mathematics, Dirichlet's unit theorem is a basic result in algebraic number theory due to Peter Gustav Lejeune Dirichlet. It determines the rank of the group of units in the ring of algebraic integers of a number field . The regulator is a pos ...

, a positive real number used in Dirichlet's unit theorem * Regulator (biology), an animal that is able to maintain a constant internal environment *

Regulator gene A regulator gene, regulator, or regulatory gene is a gene involved in controlling the expression of one or more other genes. Regulatory sequences, which encode regulatory genes, are often at the five prime end (5') to the start site of transcrip ...

, a gene involved in controlling the expression of one or more other genes * Regulator, an auxiliary physics concept used in

regularization Regularization may refer to: * Regularization (linguistics) * Regularization (mathematics) * Regularization (physics) In physics, especially quantum field theory, regularization is a method of modifying observables which have singularities in ...

Music and literature

* ''The Regulators'' (novel), a novel by Stephen King writing as Richard Bachman * "The Regulator", a song by Clutch from '' Blast Tyrant'' * "Regulator", a song by Devin Townsend from '' Ocean Machine: Biomech''

Organizations

* Regulator, a member of the

Royal Navy Police The Royal Navy Police (RNP) is the service police branch of the Royal Navy and Royal Marines. Members of the RNP enforce service law and discipline. The Royal Navy Police was known as the Royal Navy Regulating Branch until 2007, when the servi ...

, formerly the Royal Navy Regulating Branch * Regulator, a member of the

Red Army The Workers' and Peasants' Red Army ( Russian: Рабо́че-крестья́нская Кра́сная армия),) often shortened to the Red Army, was the army and air force of the Russian Soviet Federative Socialist Republic and, afte ...

traffic control units, mostly female * Regulators, a faction in the

Regulator Movement The Regulator Movement, also known as the Regulator Insurrection, War of Regulation, and War of the Regulation, was an uprising in Provincial North Carolina from 1766 to 1771 in which citizens took up arms against colonial officials, whom they v ...

(1765–1771) in Provincial North Carolina * Regulator, a member of the Shaysites, followers of Daniel Shays during Shays' Rebellion (1786) * Regulators, a faction in the

Regulator–Moderator War The 1839–1844 Regulator–Moderator War, or the Shelby County War, was a nineteenth century feud in East Texas during the Republic of Texas years between rival factions. The war started out as a dispute of land ownership before becoming a viol ...

(1839–1844) * Regulator, a vigilante organized in response to the

Banditti of the Prairie The Banditti of the Prairie, also known as The Banditti, Prairie Pirates, Prairie Bandits, and Pirates of the Prairie, in the U.S. states of Illinois, Indiana, and Ohio, and the Territory of Iowa, were a group of loose-knit outlaw gangs, duri ...

(1835–1848) *

Lincoln County Regulators The Lincoln County Regulators, or just the Regulators, were an American Old West deputized posse that fought in the Lincoln County War in New Mexico, during the late 19th century. Members history and friendships The Regulators were formed o ...

, a deputized posse during the Lincoln County War (1878) * Regulatory agency, a governmental body which oversees a particular economic activity

Other uses

* Regulator, a

flood control Flood control methods are used to reduce or prevent the detrimental effects of flood waters."Flood Control", MSN Encarta, 2008 (see below: Further reading). Flood relief methods are used to reduce the effects of flood waters or high water level ...

structure designed to manage the return of flood water from flood plains and diversion areas to the main channel * ''Regulator'' (sternwheeler), a sternwheel-driven steamboat built in 1891

Technology

Science

Music and literature

Organizations

Other uses

See also