direct current

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Related to Continuous current: alternating current, alternating voltage

current

 [kur´ent]
1. something that flows.
2. specifically, electricity transmitted through a circuit.
alternating current a current that periodically flows in opposite directions; its amplitude fluctuates as a sine wave.
convection current a current caused by movement by convection of warmer fluid into an area of cooler fluid.
direct current a current that flows in one direction only; when modeled as a wave, its amplitude is constant. When used medically it is called galvanic current. This current has distinct and important polarity and marked secondary chemical effects.
galvanic current a steady direct current.
current of injury an electric current that flows between injured myocardium and normal myocardium, because such cells have a reduced membrane potential; it may be either diastolic or systolic.
current of injury, diastolic the current that flows from injured to noninjured tissue during electrical diastole.
current of injury, systolic the current that flows from healthy tissue to injured tissue during electrical systole.
inwardly rectifying current current that rectifies so that it passes more easily towards the interior of a cell.
leakage current the electrical current that exists in the parts or metal case of electrical equipment.
outwardly rectifying current current that rectifies so that it passes more easily towards the exterior of a cell.
potassium rectifying c's transmembrane currents that rectify inwardly or outwardly to make adjustments in cellular functions; they are mainly responsible for the repolarization phase of the action potential. There are at least six mechanisms by which potassium ions move across cardiac cell membranes in the role of rectifier.

di·rect cur·rent (DC),

a current that flows only in one direction, for example, that is derived from a battery; sometimes referred to as galvanic current.
See also: galvanism.

direct current

A continuous electromagnetic current that flows in only one direction.

di·rect cur·rent

(DC) (di-rekt kŭrĕnt)
An electrical current that flows only in one direction; e.g., that derived from a battery; sometimes referred to as galvanic current.

di·rect cur·rent

(DC) (di-rekt kŭrĕnt)
An electrical current that flows only in one direction; also referred to as galvanic current.
References in periodicals archive ?
Table 1 Current carrying capacity of aluminum non-insulated and protected wires based on cross-linked polyethylene insulation with thickness of 2.3 mm of high-voltage TL with voltage of 20 kV (ambient air temperature 25[degrees]C) Strand cross-section 70 120 150 185 240 S, [mm.sup.2] Continuous load 235 330 370 430 500 current of bare wire I, A Continuous load 310 430 485 560 600 current of PW I, A Table 2 Effect of insulation thickness on heat resistance of PW of high-voltage TL with voltage of 20 kV Aluminum strand cross-section S, [mm.sup.2] 70 120 150 185 240 Continuous current load I, A 310 430 485 560 600 1.
In Section 5, we consider continuous current waveforms of type (6) satisfying relaxed condition [I.sub.n(k)] [less than or equal to] 0 for k [member of] {2,3} and n [member of] {2, 3}, instead of [I.sub.n(k)] = 0 used in the context of class-F and inverse class-F PA.
When a continuous current is applied to a metallic pipeline grounded in a same way as the cathode protection, this current pass through the ground in the places where exist direct contact, meaning without insulation or damaged.
To achieve continuous current measurement with accuracy, loss lessness, low switching noise, and high bandwidth, a modified technique is introduced as in Figure 10.
The drugs are delivered via the EyeGate II, which consists of an ocular applicator, a syringe and adapter for transferring the drug product from the vial to the applicator, a generator that provides a consistent current to the electrode of the applicator, and a return electrode to complete the continuous current.
"Without good continuous current training you are not going to have a continuous improvement process going on in manufacturing.
Chris Lagadinos, president of MagCap, developed circuitry that converts this natural energy source into useable DC power capable of sustaining a continuous current to charge and maintain a battery at full charge.
These devices integrate two 80m-ohm N-Channel MOSFET high-side power switches, each controlled by an individual logic-enable signal, and capable of continuous current intake of up to 500mA.
The swim jet system was installed in the small 14.5-by-9-foot swimming area, creating a continuous current that can easily be adjusted.
Another Function that Wienken and his team are working on is continuous current control.
Offered in versions for brush or brushless motors, the controller is capable of 1A continuous current and 2A peak current from a supply voltage range of 9-24 VDC.
Able to survive thousands of small surges, the SNAP LiTE allows a continuous current of 150 mA (Max), and gives protection modes of tip to ground and ring to ground.

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