Regulator may refer to:

Technology

Regulator (automatic control) In automatic control, a regulator is a device which has the function of maintaining a designated characteristic. It performs the activity of managing or maintaining a range of values in a machine. The measurable property of a device is managed clos ...

, 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 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 setting, a r ...

Diving regulator A diving regulator or underwater diving regulator is a pressure regulator that controls the pressure of breathing gas for underwater diving. The most commonly recognised application is to reduce pressurized breathing gas to ambient pressure and ...

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

Regulator (sewer) Regulator may refer to: Technology * Regulator (automatic control), a device that maintains a designated characteristic, as in: ** Battery regulator ** Pressure regulator ** Diving regulator ** Voltage regulator * Regulator (sewer), a control d ...

, a control device used in a combined sewer system * Regulator (timepiece), a device in mechanical timepieces attached to the balance spring 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 an approximate harmonic oscillator: It swings back and forth in a precise time interval dep ...

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

throttle A throttle is a mechanism by which fluid flow is managed by construction 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'' ha ...

of a steam engine * Regulator, a component of

Uilleann pipes The uilleann pipes ( or , ), also known as Union pipes and sometimes called Irish pipes, are the characteristic national bagpipe of Ireland. Their current name is a partial translation of the Irish language terms (literally, "pipes of the ...

, 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 p ...

, 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 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) * Regularization (solid modeling) * Regularization Law, an Israeli law intended to retroactively legalize settlements See also ...

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, often shortened to the Red Army, was the army and air force of the Russian Soviet Republic and, from 1922, the Soviet Union. The army was established in January 1918 by a decree of the Council of People ...

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

Regulator Movement The Regulator Movement in North Carolina, 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 offi ...

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

Shays' Rebellion Shays's Rebellion was an armed uprising in Western Massachusetts and Worcester, Massachusetts, Worcester in response to a debt crisis among the citizenry and in opposition to the state government's increased efforts to collect taxes on both in ...

(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. They are well known for including Billy the Kid as a member ...

, a deputized posse during the Lincoln County War (1878) *

Regulatory agency A regulatory agency (regulatory body, regulator) or independent agency (independent regulatory agency) is a government agency, government authority that is responsible for exercising autonomous jurisdiction over some area of human activity in a l ...

, a governmental body which oversees a particular economic activity

Transportation

* ''Regulator'' (sternwheeler), a sternwheel-driven steamboat built in 1891