AC and DC - Revision history

Umahajan8 at 00:33, 26 January 2025

2025-01-26T00:33:06Z

← Older revision		Revision as of 20:33, 25 January 2025
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	Created by Jihoon Lee '''Claimed by Cal Elwer Fall 2016'''		Created by Jihoon Lee '''Claimed by Cal Elwer Fall 2016''' Claimed by Udita Mahajan Spring 2025

	==The Main Idea==		==The Main Idea==

Cal.elwer at 17:26, 27 November 2016

2016-11-27T17:26:06Z

← Older revision		Revision as of 13:26, 27 November 2016
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	[[File:AC.gif]]		[[File:AC.gif]]

	Using the same water pump concept, here is a ~~vvisualization~~ of a DC current. The water can only flow in one direction.		Using the same water pump concept, here is a visualization of a DC current. The water can only flow in one direction.

	[[File:DC2.png]]		[[File:DC2.png]]

Cal.elwer: /* Simple */

2016-11-27T14:33:57Z

Simple

← Older revision		Revision as of 10:33, 27 November 2016
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	===Simple===		===Simple===

			An AC circuit has a rms current of 8 Amps. The current travels through a 10 Ohm resistor.

			What is the peak current?
			To find the max current, just multiply the rms of the current by the square root of 2. 8*sqrt(2) = 11.31

			What is the peak voltage drop across the resistor?
			To find the voltage drop, use ohm's law. IR = 11.3110 = 113.1

	===Difficult===		===Difficult===

Cal.elwer: /* History */

2016-11-27T14:16:58Z

History

← Older revision		Revision as of 10:16, 27 November 2016
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	==History==		==History==

			[[File:currentWar.jpg]]


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	George Westinghouse believed that AC currents was the solution as well and was able to license Tesla's patents and use the technology in the industry. Westinghouse proved that AC currents were more efficient and cheaper to implement, so the industry switched over to AC currents.		George Westinghouse believed that AC currents was the solution as well and was able to license Tesla's patents and use the technology in the industry. Westinghouse proved that AC currents were more efficient and cheaper to implement, so the industry switched over to AC currents.

	As of late, there have been methods that are able to convert DC from high to low voltages, and some companies are also using high voltage DC to transport electricity over very long distances. As technology improves, both types of current will continue to rival each other		As of late, there have been methods that are able to convert DC from high to low voltages, and some companies are also using high voltage DC to transport electricity over very long distances. As technology improves, both types of current will continue to rival each other.

	==Connectedness==		==Connectedness==

Cal.elwer: /* Examples */

2016-11-27T14:15:21Z

Examples

← Older revision		Revision as of 10:15, 27 November 2016
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	===Difficult===		===Difficult===

			==History==


			The history of AC and DC currents is very exciting. Back in the late 1880's, they called it the 'War of Currents'. On one side stood Thomas Edison, well known for his invention of the lightbulb. Thomas Edison advocated for direct currents for power distribution in the United States. On the other side stood Nikola Tesla, who supported and developed alternating currents.

			The U.S originally used direct currents for power distribution with the aid of Thomas Edison, but there was a huge problem with converting to higher and lower voltages. This made powering houses in rural areas very difficult because a power plant would need to be close by.

			Tesla thought that AC currents would be a solution to the problem because it could convert from high to low voltages relatively easily. Since Thomas Edison didn't want to lose the money he was making throughout the US on his DC patents, he began a campaign that spread false information about AC currents trying to deter the nation from switching over.

			George Westinghouse believed that AC currents was the solution as well and was able to license Tesla's patents and use the technology in the industry. Westinghouse proved that AC currents were more efficient and cheaper to implement, so the industry switched over to AC currents.

			As of late, there have been methods that are able to convert DC from high to low voltages, and some companies are also using high voltage DC to transport electricity over very long distances. As technology improves, both types of current will continue to rival each other

	==Connectedness==		==Connectedness==

Cal.elwer: /* The Main Idea */

2016-11-27T13:33:42Z

The Main Idea

← Older revision		Revision as of 09:33, 27 November 2016
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	[[File:AC.gif]]		[[File:AC.gif]]

			Using the same water pump concept, here is a vvisualization of a DC current. The water can only flow in one direction.

			[[File:DC2.png]]

Cal.elwer: /* The Main Idea */

2016-11-27T13:21:54Z

The Main Idea

← Older revision		Revision as of 09:21, 27 November 2016
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	The square wave, which is often used in digital electronics		The square wave, which is often used in digital electronics
	[[File:squareWave2.png]]		[[File:squareWave2.png]]
	The importance is that the voltage is alternating over time
			The triangle wave, which is often used in sound synthesis
			[[File:triangleWave2.png]]


			The importance is that the voltage is alternating over time. Here is a visualization of an AC current in the the alternating current of this water pump

			[[File:AC.gif]]


	===A Mathematical Model===		===A Mathematical Model===

Cal.elwer: /* The Main Idea */

2016-11-27T13:01:58Z

The Main Idea

← Older revision		Revision as of 09:01, 27 November 2016
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	The square wave, which is often used in digital electronics		The square wave, which is often used in digital electronics
	[[File:~~squareWave~~.png]]		[[File:squareWave2.png]]
	The importance is that the voltage is alternating over time		The importance is that the voltage is alternating over time

Cal.elwer: /* The Main Idea */

2016-11-27T12:54:50Z

The Main Idea

← Older revision		Revision as of 08:54, 27 November 2016
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	AC and DC are different types of voltage or current used for the conduction and transmission of electrical energy. DC, or direct current, is the steady constant current in a circuit consisting of a battery and a resistor that moves in one direction. On the other hand, AC, or alternating current, changes over time in an oscillating repetition. When home appliances such as floor lamps are used, two slots of the wall socket supply a sinusoidally varying voltage, or AC voltage, to drive a sinusoidally varying current in the lamp. Due to AC's wave-like motion, AC can travel far distances efficiently compared to other currents. Typical home appliances which is powered by currents fundamentally from a far distance uses AC. Battery powered objects such as flashlights uses DC power. Electrons from the battery travel in one direction at a steady rate.		AC and DC are different types of voltage or current used for the conduction and transmission of electrical energy. DC, or direct current, is the steady constant current in a circuit consisting of a battery and a resistor that moves in one direction. On the other hand, AC, or alternating current, changes over time in an oscillating repetition. When home appliances such as floor lamps are used, two slots of the wall socket supply a sinusoidally varying voltage, or AC voltage, to drive a sinusoidally varying current in the lamp. Due to AC's wave-like motion, AC can travel far distances efficiently compared to other currents. Typical home appliances which is powered by currents fundamentally from a far distance uses AC. Battery powered objects such as flashlights uses DC power. Electrons from the battery travel in one direction at a steady rate.


	~AC currents are not always oscillating in sinusoidal motion, although most buildings and homes have sinusoidal AC currents. Other types of currents include:		~AC currents are not always oscillating in sinusoidal motion, although most buildings and homes have sinusoidal AC currents. Other types of currents include:


	The square wave, which is often used in digital electronics		The square wave, which is often used in digital electronics
			[[File:squareWave.png]]
	The importance is that the voltage is alternating over time		The importance is that the voltage is alternating over time

Cal.elwer: /* The Main Idea */

2016-11-27T12:38:49Z

The Main Idea

← Older revision		Revision as of 08:38, 27 November 2016
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	AC and DC are different types of voltage or current used for the conduction and transmission of electrical energy. DC, or direct current, is the steady constant current in a circuit consisting of a battery and a resistor that moves in one direction. On the other hand, AC, or alternating current, changes over time in an oscillating repetition. When home appliances such as floor lamps are used, two slots of the wall socket supply a sinusoidally varying voltage, or AC voltage, to drive a sinusoidally varying current in the lamp. Due to AC's wave-like motion, AC can travel far distances efficiently compared to other currents. Typical home appliances which is powered by currents fundamentally from a far distance uses AC. Battery powered objects such as flashlights uses DC power. Electrons from the battery travel in one direction at a steady rate.		AC and DC are different types of voltage or current used for the conduction and transmission of electrical energy. DC, or direct current, is the steady constant current in a circuit consisting of a battery and a resistor that moves in one direction. On the other hand, AC, or alternating current, changes over time in an oscillating repetition. When home appliances such as floor lamps are used, two slots of the wall socket supply a sinusoidally varying voltage, or AC voltage, to drive a sinusoidally varying current in the lamp. Due to AC's wave-like motion, AC can travel far distances efficiently compared to other currents. Typical home appliances which is powered by currents fundamentally from a far distance uses AC. Battery powered objects such as flashlights uses DC power. Electrons from the battery travel in one direction at a steady rate.
			~AC currents are not always oscillating in sinusoidal motion, although most buildings and homes have sinusoidal AC currents. Other types of currents include:
			The square wave, which is often used in digital electronics

			The importance is that the voltage is alternating over time

	===A Mathematical Model===		===A Mathematical Model===