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Old 03-27-2007, 01:12 PM   #1
DebianDog
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Default The basics of electrics - AKA Electricity for Dummies

What the heck is a volt, amp, watt, ohm, mah, C, etc...

Well here it is... all laid out for us thicker headed folks. Plus, it is kind of a fun read.
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File Type: pdf basics_of_electrics.pdf (83.5 KB, 19135 views)
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Old 03-27-2007, 06:00 PM   #2
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The description of Volts isn't exactly accurate but it's good enough for non-Electronics types. The way it's written follows the analogy of water in a pipe.
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Old 06-13-2007, 01:30 AM   #3
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The Volt would be the height difference between the water level in the tank and the end of the hose. A bigger tank would not increase the pressure (Volt)
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Old 08-06-2010, 05:07 PM   #4
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Quote:
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The Volt would be the height difference between the water level in the tank and the end of the hose. A bigger tank would not increase the pressure (Volt)
Actually the higher you fill the tank with water the more pressure at the bottom of the tank. Think of it like the deep end of a pool. The farther down you swim the higher the pressure and therefore the more your ears start to ache. This is because of the weight of the water above you. It works the same in the tank. If you have 20 feet of water in the tank above the opening you will have more pressure at the bottom then if you only had 10 feet.
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Old 08-09-2011, 05:39 PM   #5
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Great article. I also had electrical course work in HS, then 2 AAS degrees in computer sciences and a BS in computer science and some master degree course work as well. I am by no means an expert but that pdf is a very good easy to read document. Well done.
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Old 07-27-2007, 11:04 PM   #6
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Quote:
Originally Posted by Jermo
The description of Volts isn't exactly accurate but it's good enough for non-Electronics types. The way it's written follows the analogy of water in a pipe.
Jermo
That is exactly how they teach it to 1st year electronics students. Or at least when I was in school a long, long time ago.
They donít need atomic structure, just how it reacts.
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Old 07-28-2007, 07:14 AM   #7
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I went through 2 years of electronics in High School, another 2 years in the Navy, then another 2 years for my associates. I've never heard that presentation.

Maybe it was given in the electrical class?
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Old 07-28-2007, 11:23 AM   #8
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Quote:
Originally Posted by Jermo
I went through 2 years of electronics in High School, another 2 years in the Navy, then another 2 years for my associates. I've never heard that presentation.

Maybe it was given in the electrical class?
The water analogy has been used for years in electronics. But that doesn't necessarily mean they teach it that way everywhere.
When I was in high school I took an electronics class and the water analogy was the first thing we covered. Then when I went to tech. (also elactronics) I got it again the first day.
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Old 08-08-2007, 08:26 AM   #9
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For those who feel really bright:

http://amasci.com/ele-edu.html

Some outstanding reads in there.
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Old 08-08-2007, 09:42 AM   #10
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Hmmmmmmmmmmmmmmmmmmmm Dog hmmmmmmmmmmmmmm. The analog is fine but there are alittle bit of misunderstanding or misleading sentences, but it's fine for our purposes. One thing that is really wrong is your discription of a watts "...Watt is a unit of work done over time". Work over time is Energy and has units of joules (Integrals !!! Hurray for calculus). BTW If the water in the hose is suppose to be the electrons then technically the water should be flowing from the ground back through the hose and into the tank.
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Old 09-08-2007, 08:05 PM   #11
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Default using the water, pipes, etc analogy...

What is the mechanical (using the water analogy) equivalent of a switching regulator vs a linear?
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Old 09-08-2007, 09:20 PM   #12
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A linear series regulator - A globe value that would let you control the volume of water (no this is not technically accurate but it works for the comparison to the others)

A linear shunt regulator - A little valve that drains the water from the main pipe so you can control the flow in the main pipe

A switching regulator - A ball valve that you open and close fast. The longer you leave it on compared to when its closed the more average water will flow.


While the flow of water is the analogy is current and regulator uses voltage just think of the current being converted to voltage by a resistor or something.
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Old 12-16-2007, 09:23 PM   #13
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Quote:
Originally Posted by HFG View Post
One thing that is really wrong is your discription of a watts "...Watt is a unit of work done over time". Work over time is Energy and has units of joules (Integrals !!! Hurray for calculus).
HFG,

I'm guessing there's a semantics issue here, because...

Watts is a measure of power, which is work (or energy) per time interval. Energy or work are measured in joules, and a watt is a joule per second.

Energy and work are synonymous (you say "work over time is energy").

As I said, I may just be misunderstanding you, because I suspect you know all this.

EDIT:

Looking back at this I think I see the problem. Is it possible you're confusing "work" and "power"? Work = Energy. Power = work/time (or energy/time same thing).
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Old 12-16-2007, 09:34 PM   #14
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The Volt would be the height difference between the water level in the tank and the end of the hose. A bigger tank would not increase the pressure (Volt)
True enough, but I that's what was stated in the PDF file, right?

To the extent you can use the water analogy (which I think is a pretty fair analogy) the PDF file looks accurate to me.
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Old 04-22-2009, 01:05 PM   #15
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Quote:
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One thing that is really wrong is your discription of a watts "...Watt is a unit of work done over time".

''Watts'' just tells you how many amps and volts a particular device needs in order to function, i haven't heard anything about time when working with the term ''watts''.

''Watts'' is just the correlation between Amps and volts, VxA=watts
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Old 04-22-2009, 01:16 PM   #16
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I am somewhat familiar with electronic theory.
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Old 07-08-2010, 06:42 PM   #17
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HI! I decided to delete my post. Have a great day.

Last edited by cvdiver; 07-08-2010 at 06:45 PM.. Reason: has been previously posted
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Old 07-08-2010, 11:16 PM   #18
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HI! I decided to delete my post. Have a great day.
I thought it was a perfectly good post that helped to clarify an issue that sometimes confuses folks. The stuff you're studying in dynamics now is exactly what lets us build a wind powered vehicle that goes directly downwind, faster than the wind (but I'd still give even odds that your dynamics professor would claim it's impossible).
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Old 12-16-2007, 05:08 PM   #19
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What does the C stand for on ly-po pacs? Also, the S?
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Old 12-16-2007, 05:40 PM   #20
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Quote:
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What does the C stand for on ly-po pacs? Also, the S?
C = Capacity
S = Series
P = Parallel
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