- direct-current polarity
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полярность постоянного тока
English-Russian dictionary of geology. 2011.
direct-current polarity
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Direct current — (red curve). The horizontal axis measures time; the vertical, current or voltage. Direct current (DC) is the unidirectional flow of electric charge. Direct current is produced by such sources as batteries, thermocouples, solar cells, and… … Wikipedia
direct current — n an electric current flowing in one direction only and substantially constant in value abbr. DC * * * (DC) a current that flows in one direction only; when modeled as a wave, its amplitude is constant. When used medically it is called galvanic… … Medical dictionary
High-voltage direct current — HVDC or high voltage, direct current electric power transmission systems contrast with the more common alternating current systems as a means for the bulk transmission of electrical power. The modern form of HVDC transmission uses technology… … Wikipedia
direct polarity — Direct current flowing from anode (base metal) to cathode (electrode). The electrode is negative and the base metal is positive … Dictionary of automotive terms
Polarity symbols — Many electrical devices use direct current (DC) power, often provided by a AC (alternating current) to DC adapter, also known as a wall wart. The polarity of the adapter cord must match the polarity of the device, meaning that the positive… … Wikipedia
Current loop — This article is about the electrical signaling schemes. For the oceanic phenomenon, see Loop current. A current loop describes two different electrical signalling schemes. Contents 1 Digital 2 Analog 3 Process control use … Wikipedia
polarity — [1] Indicates if the pole shoes are so magnetized as to make current low in a direction compatible with the direction of flow as set by the battery. [2] Indicates if the end of a magnet is the North or South pole (N or S). [3] Indicates if the… … Dictionary of automotive terms
Residual-current device — A two pole residual current device A Residual Current Device is a generic term covering both RCCBs and RCBOs. A Residual Current Circuit Breaker (RCCB) is an electrical wiring device that disconnects a circuit whenever it detects that the… … Wikipedia
List of current systems for electric rail traction — This a list of the power supply systems that are, or have been, used for tramway and railway electrification systems. Note that the voltages are nominal and vary depending on load and distance from the substation. Many modern trams and trains use … Wikipedia
Alternating current — (green curve). The horizontal axis measures time; the vertical, current or voltage. In alternating current (AC, also ac) the movement of electric charge periodically reverses direction. In direct current (DC, also dc), the flow of electric charge … Wikipedia
Electrical polarity — (positive and negative) is present in every electrical circuit. Electrons flow from the negative pole to the positive pole. In a direct current (DC) circuit, one pole is always negative, the other pole is always positive and the electrons flow in … Wikipedia
