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Related to circuits: Series and parallel circuits

circuit

 [ser´kut]
the round or course traversed by an electrical current. The circuit is said to be closed when it is continuous, so that the current may pass through it; it is open, broken, or interrupted when it is not continuous and the current cannot pass through it.
reentrant circuit (reentry circuit) the circuit formed by the circulating impulse in reentry.

cir·cuit

(ser'kit),
The path or course of flow of cases or electric or other currents.
[L. circuitus, a going round, fr. circum, around, + eo, pp. itus, to go]

circuit

/cir·cuit/ (ser´kit) [L.] the round or course traversed by an electric current.
reverberating circuit  a neuronal pathway arranged in a circle so that impulses are recycled to cause positive feedback or reverberation.
reentrant circuit  the circuit formed by the circulating impulse in reentry.

circuit

[sur′kit]
Etymology: L, circuitus, going around
a course or pathway, particularly one through which an electric current passes. Current passes through a closed or continuous circuit and stops if the circuit is open, interrupted, or broken. See also volt.

cir·cuit

(sĭr'kŭt)
The path or course of flow of electric or other currents.
[L. circuitus, a going round, fr. circum, around, + eo, pp. itus, to go]

circuit

a round course, or course followed by, for example, electrical current, anesthetic gas, a traveling judge.

Bain coaxial circuit
a variant of the T-piece circuit of delivery of anesthetic gas in which the fresh gas passes up a central tube and the expired gas passes out through the outer sleeve.
breathing circuit
of an anesthetic machine is the pathway by which the volatile anesthetic agent and oxygen are conveyed to the patient and carbon dioxide is removed. The two methods for removal of carbon dioxide are that of venting all expired gases to the exterior, and the method of absorbing the CO2 chemically and rebreathing the expired gas. The two basic circuits are the open circuit in which the patient has access to environmental air as well as the anesthetic-oxygen mixture and exhales into the environment, and the closed system in which all gases are rebreathed. The latter may be a to-and-fro system or a circle system, the latter based on the use of unidirectional valves to ensure that the gases always pass in the correct direction. See also Bain coaxial circuit (above), circle breathing circuit (below), coaxial circuit (below), Lack circuit (below), Magill circuit (below), schimmelbusch mask, T-piece circuit (below).
circle breathing circuit
in an anesthetic machine; the flow of gases is directed by an inclusion in the system of two unidirectional valves, one in an expiratory and one in an inspiratory tube. The rebreathing bag and the canister of sodalime for CO2 absorption are located between the two tubes.
coaxial circuit
a system for the delivery of gaseous anesthetic which has separate conduits for fresh gas and expired air and is essentially the same as the T-piece system except that one conduit is inside the other. An attractive system because the exhaust gases can be ducted to the exterior.
Lack circuit
a coaxial breathing circuit used in anesthesia. Fresh gas flows up the outer sleeve, expired air and gas pass down the inner tube.
Magill circuit
a breathing circuit used in anesthesia. It includes a reservoir bag, wide-bore corrugated tubing and a spring-loaded expiratory valve. It is a semiclosed system in which rebreathing is prevented by having the gas flow rate from the cylinders slightly in excess of the patient's minute respiratory volume.
Mapleson circuit
an anesthetic breathing circuit in which the fresh gas flow is used to remove exhaled carbon dioxide. The Mapleson A circuit is called also the Magill circuit (above), Mapleson D circuit is called also the Bain circuit (above), and the jackson-rees t-piece is the Mapleson F circuit.
non-rebreathing circuit
anesthetic breathing circuits in which exhaled gases are discharged to the environment and do not pass back to the patient. See Magill circuit (above).
parallel circuit
a variation on the Bain and Lack circuits (above) in which there are two tubes running side by side instead of one inside the other.
rebreathing circuit
anesthetic breathing circuits in which the exhaled gas is recirculated to the patient with CO2 removed.
T-piece circuit
a breathing circuit used in anesthesia. Shaped like a T. The exhaled gases are passed into a reservoir tube from which they are pushed by fresh gas from the anesthetic machine as it passes from the stem to the other arm of the T during expiration. There are no valves.
x-ray circuit
a complete path along which an electrical current flows. In its simplest form it includes a source of electrons (power source), a load or resistance, and a conductor.
References in periodicals archive ?
The Sixth Circuit held that the revenue ruling did not conflict with the regulations because the ruling addressed pre-planned transactions, while the example in the regulations involved transactions that were two years apart and contained no reference to the transactions being part of a single plan.
If nothing can be done at the press to fix the leak, open the valves until the lines run clean, then blow air through all the mold circuits to remove as much water as possible.
In testimony before the committee, three 9th Circuit justices gave mixed reviews to the proposal.
Silicon circuits perform complex operations using a handful of simple components known as logic gates.
In Willie Mae Barlow-Davis (4-27-00, aff'g TC Memo 1998-248), the Eleventh Circuit Court of Appeals held a contingent fee to be excludible.
In the very earliest computers" built in the 1940s, technicians constructed large circuits with bulky switches in glass cylinders and miles of wires.
Since 1989, Advanced Circuits has been a leading printed circuit board manufacturer specializing in engineering prototypes and quickturn production boards with the industry's best on-time shipping record.
Of the three circuit courts that have ruled on this issue (discussed below), two agreed with the Tax Court, but one allowed a flail deduction for such fees.
Circuits with a gain less than one are ultimately useless -- the electrical signal becomes so faint that it cannot be detected.
By mimicking biology, researchers hope to design molecules that could act as self-directed construction workers assembling perfect nanoscale circuits, millions or billions at a time.
6/3/98), the Second Circuit Court of Appeals vacated and remanded the Tax Court's decision partially disallowing Dexsil's compensation deduction for its CEO and majority shareholder.
The cartridge fuses have higher amperage ratings and are used to protect circuits that supply large appliances.