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In 1887 direct current (DC) was king. At that time there were 121 Edison power stations scattered across the United States delivering DC electricity to its customers. But DC had a great limitation -- namely, that power plants could only send DC electricity about a mile before the electricity began to lose power. So when George Westinghouse introduced his system based on high-voltage alternating current (AC), which could carry electricity hundreds of miles with little loss of power, people naturally took notice. A "battle of the currents" ensued. In the end, Westinghouse's AC prevailed.
But this special feature isn't about the two electrical systems and how they worked. Rather, it's a simple explanation that shows the difference between AC and DC.
To find out more about alternating and direct current, what exactly an electric current is, and two ways that the currents can be produced, check out the interaction to the left and the pages that follow.
DC (Direct Current)
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AC (Alternating Current)
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To find out more about alternating and direct current, what exactly an electric current is, and two ways that the currents can be produced, check out the interaction to the left and the pages that follow.
DC (Direct Current)
OFF
AC (Alternating Current)
What else can I help you with?
What is AC plus DC?
An offset AC wave. It will be offset by the magnitude of the DC applied.
How ac change to DC?
by the use of inverter we can convert ac to dc.
Does Australia use ac or dc?
240v ac
How can a radio use both DC and AC?
Radios use DC power supplies to operate. If a radio is powered from a mains AC supply, a power supply circuit will convert the AC supply to DC. Therefore, a radio may have both a DC and an AC power input but ultimately, the internal circuitry will always use DC.
Does a car use DC or AC power?
the car use dc current dear
Can you run a DC unit off ac?
no the dc unit will be damaged . but , if you have no other options left then you have to use a rectifier to convert the ac into dc .
How do you increase voltage 5v-12v?
AC or DC? AC - use a transformer, DC - forget it - not simple or cheap.
How do you increase voltage 5v 12v?
AC or DC? AC - use a transformer, DC - forget it - not simple or cheap.
What instruments do AC to dc current use?
I would assume that you mean what devices do you use to convert ac current to dc current?The answer is Diodes.seediode-bridge
Why do you still use both ac and DC?
Because some appliances work with ac current and some with dc current.
Why not you use ac instead of dc to electronic components?
AC is easier and cheaper to send from the generators to the consumers than DC is.
Do cars use AC or DC current?
Most automotive applications use DC, although the alternator is an AC device which uses a rectifier to produce DC. http://en.wikipedia.org/wiki/Direct_current
