direct current


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Related to direct current: alternating current

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 (DC)

an electric current that flows in one direction only and is substantially constant in value. Compare alternating current.

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.

current

that which flows; electric transmission in a circuit.

alternating current
a current that flows in opposite directions sinusoidally.
direct current
a current whose direction is always the same.
References in periodicals archive ?
Order worth a $50-millio is to refurbish the Songo high-voltage direct current (HVdc) converter station.
Lot 2: Repair of Small Rotating Machinery Direct Current CIG 4025503E26.
Siemens' HVDC station, which has a transmission capacity of 900 megawatts, converts the alternating current generated by the wind turbines to direct current before transmitting it onshore to the German national grid.
The rectangular wire provides more copper in the same area that round wire would occupy, reducing the direct current resistance in a lower profile volume.
According to Prof Jhunjhunwala, a member of the Prime Minister s Science Advisory Council the power distribution organization would set up a committed 48V low-power direct current (DC) line from sub-station to houses.
As per the contract, Petrofac will build and install the BorWin3 platform, which will accommodate a Siemens high voltage direct current (HVDC) station.
It would not require significant modifications to a car's battery or electrical system, which would continue to operate on 12 volts of direct current.
The conductor is used, among other things, when battery direct current is converted into alternating current in an electric motor.
The system arrive leverages BWP's Distributed Converter and Printed Circuit Board (PCB) technology to provide the power conversion process across the generator, and convert power from alternating current (AC) to direct current (DC) directly at the generator.
The company's main product is a device that converts electrical power from alternating current to direct current with the focus on industrial and telecommunications departments.

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