Circuit

Circuit may mean:

• Circuit theory, the theory of accomplishing work by routing electrons, gas, fluids, or other matter through loops (e.g., electrical, hydraulic or pneumatic circuits)

Further information: Hydraulic analogy and Fluidics

In electrical engineering

• Electrical circuit, an electrical network that has a closed loop giving a return path for the current
  • Circuit analysis, the process of finding the voltages across, and the currents through, every component in an electrical circuit
  • Electronic circuit, active electronic components connected in a circuit
  • Analog circuit or Digital circuit
  • Integrated circuit
    • Mixed-signal integrated circuit
  • Asynchronous circuit or Synchronous circuit
  • Printed circuit board (PCB)
  • Series and parallel circuits
  • Telecommunication circuit
  • Circuit diagram
  • Balanced circuit
  • LC circuit

In fluid power and fluid mechanics

• Hydraulic circuit
• Pneumatic circuit

In physics

• Magnetic circuit, one or more closed loop paths containing a magnetic flux

In mathematics and computer science

• Circuit (computer theory), a theoretical structure simulating electrical and data paths
  • Boolean circuit
  • Integer circuit, a mathematical object of computational complexity
• Circuit complexity, a branch of computational complexity theory
• Cycle (graph theory), a closed path, with no other repeated vertices than the starting and ending vertices
• Matroid circuit, in combinatorics

In neuroscience

• Biological neural network, a neuronal circuit

In economics

• Monetary circuit theory, a heterodox theory of monetary economics; also called circuitism

In government and law

• Circuit (administrative division), an administrative country subdivision in East Asia
• Circuit court, the name of court systems in several common law jurisdictions

In transportation and racing

• Circuit (airfield), also called the pattern, a standard path followed by aircraft when taking off or landing
• Kart circuit
• Formula One circuits (see List of Formula One circuits)
• Race track

Others

• "Circuit", a character from the Munna Bhai film series
• Circuit (LCMS), local grouping of congregations in the Lutheran Church - Missouri Synod
• Circuit (film), a 2001 gay-themed film set in the world of gay circuit parties
• Circuit party, a gay dance event
• Methodist Circuit, a church governance in Methodism
• Circuital, a 2011 album by My Morning Jacket