| AMR | acoustic muscle reflex; activity metabolic rate; acute mitral stenosis; alopecia-mental retardation ... |
|---|---|
| APM | Academy of Parapsychology and Medicine; Academy of Physical Medicine; Academy of Psychosomatic Medic... |
| AXT | alternating exotropia |
| EPI/STAR | echo planar imaging with signal targeting and alternating radiofrequency |
| PAN | periarteritis nodosa; periodic alternating nystagmus; peroxyacylnitrate; polyarteritis nodosa; posit... |
| alternating current |
A type of electrical current in which the direction of the flow of electrons switches back and forth. In the US, the current that comes from a wall outlet is alternating; it cycles back and forth sixty times each second. The current that flows in a flashlight, on the other hand, is direct current (DC), which does not alternate.
출처: www.pbs.org/transistor/glossary.html
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|---|---|
| alternating current |
Either voltage or current that varies smoothly from zero to a maximum value in one direction, or polarity, and returns to zero. It then reverses its direction (polarity) and rises to a maximum value in the opposite direction, and then returns to zero to complete the cycle. This cycle is repeated continuously. The number of cycles per second is its frequency, measured in hertz (Hz). See SINE WAVE.
출처: www.nuhorizons.com/Glossary/BasicElecConcepts.html
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| alternating current |
Type of electrical current, the direction of which is reversed at regular intervals or cycles. The US standard is 120 reversals (60 cycles) per second.
출처: www.stanford.edu/group/Power-Systems/electrical_te...
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| alternating current |
Electricity that changes direction periodically. The period is measured in Cycles per Second (Hertz, Hz).
출처: www.otherpower.com/glossary.html
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| alternating current |
Flow of electricity that constantly changes direction between positive and negative sides. Almost all power produced by electric utilities in the United States moves in current that shifts direction at a rate of 60 times per second.
출처: www.neo.state.ne.us/statshtml/glossarya.htm
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