More Computer Probs.

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Originally Posted by johnmc

If I operate my 1200W GMC router at 240V, based on the formula P = IE where P is power, I is current and E is voltage, it will draw 5 amps. If the voltage is dropped to say 120V, it will draw 10 amps. Ergo, volts drop, amps increase.

Ohm's Law: E = IR and P = EI

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There is no P in ohms law, not even a silent one like in bath. The equasion goes like this
E over IR. E being Elctron Moving force (one description) for Volts
I is international amperes
R is resistence (Ohms)
To use this equasion to find volts you multiply I (amps) with R (Ohms resistance)
To find I (amps) you divide E (volts) by R (Ohms)
To find R (ohms) you divide E (volts) by I (amps)

One electrical horse power is 640W, Just thought I would throw that in.
I will have a look at my old text books and see if I can come up with the Ohms Law theory on finding wattage.
Mechanical horse power is the ability for one horse to lift one pound 33 thousand feet in one minute, or to lift 33 thousand pound one foot in one minute or.....
This is getting down tho the nitty-gritty ain't it? And I didn't say anything about Hi-jacking the thread Bob, get back on track man!

Peter R.
http://www.woodworkforums.ubeaut.com...ons/icon10.gifhttp://www.woodworkforums.ubeaut.com...cons/icon7.gif

Sorry Peter R but 746 watts is one Horsepower.
P=IE or Isquared x R or E squared divided by R
And me Black and Decker drill is a ripper.

Generally speaking halving the voltage of an universal motor doesnt halve the current which usually stays much the same. But the motor speed reduces as the current within the armature is controlled by inductance of the windings more so than by resistance.

Quote:

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Originally Posted by Peter R

There is no P in ohms law, not even a silent one like in bath. The equasion goes like this
E over IR. E being Elctron Moving force (one description) for Volts
I is international amperes
R is resistence (Ohms)
To use this equasion to find volts you multiply I (amps) with R (Ohms resistance)
To find I (amps) you divide E (volts) by R (Ohms)
To find R (ohms) you divide E (volts) by I (amps)

One electrical horse power is 640W, Just thought I would throw that in.
I will have a look at my old text books and see if I can come up with the Ohms Law theory on finding wattage.
Mechanical horse power is the ability for one horse to lift one pound 33 thousand feet in one minute, or to lift 33 thousand pound one foot in one minute or.....
This is getting down tho the nitty-gritty ain't it? And I didn't say anything about Hi-jacking the thread Bob, get back on track man!

Peter R.
http://www.woodworkforums.ubeaut.com...ons/icon10.gifhttp://www.woodworkforums.ubeaut.com...cons/icon7.gif

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You mean E = IR, not E over IR

Thanks for the maths lesson

Continuing with the nitty gritty....

There is indeed P in Ohm's law. It stands for power (Watts).

The following link gives detailed equations of Ohm's law which defines the relationship between power, voltage, current and resistance for both DC and AC sources.

http://www.angelfire.com/pa/baconbacon/page2.html

Quote:

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Originally Posted by johnmc

You mean E = IR, not E over IR

Thanks for the maths lesson

Continuing with the nitty gritty....

There is indeed P in Ohm's law. It stands for power (Watts).

The following link gives detailed equations of Ohm's law which defines the relationship between power, voltage, current and resistance for both DC and AC sources.

http://www.angelfire.com/pa/baconbacon/page2.html

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I meant the phyisical appearance of the equation is E over IR Now If you draw a circle and then draw a line accross the center of the circle and then draw a line from that center line to the bottom of the circle you should have a half circle and 2 quarter circles. If you put E in the half (upper part) and I in the left Quarter and R in the right quarter you will have the equasion. Whenever you try and remember this you will think of He over her. Now E being upper is always divided by either I or R and R and I being side by side are always multiplied by each other.

I tried the link quickly but didn't come up with ohms law, Later.
I concede the horsepower bit, sorry.http://www.woodworkforums.ubeaut.com...ons/icon11.gif
http://www.woodworkforums.ubeaut.com...ons/icon10.gif
Peter R.http://www.woodworkforums.ubeaut.com...ons/icon10.gif

Man, youve got to ask your Doc to reduce your medication.


Al http://instagiber.net/smiliesdotcom/...ackeye/lol.gif

Outbacks law:

T x A / CS =BS

Where T = testosterone
A = Argumentiveness
CS = Common Sense

The answer is a shiiit load.

Guess what BS =

Quote:

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Originally Posted by ozwinner

Man, youve got to ask your Doc to reduce your medication.


Al http://instagiber.net/smiliesdotcom/...ackeye/lol.gif

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It's not my fault Al, when the nice men in the white coats come around and undo my ankle chains they give me my nightly dose, and a big plate of pancakes with tomato sauce, Yum!

It is good to have and excuse - what's yours?
http://www.woodworkforums.ubeaut.com...cons/icon7.gif
Peter R.http://www.woodworkforums.ubeaut.com...cons/icon7.gifhttp://www.woodworkforums.ubeaut.com...cons/icon7.gifhttp://www.woodworkforums.ubeaut.com...cons/icon7.gifhttp://www.woodworkforums.ubeaut.com...ons/icon10.gif

Try this.


http://www.angelfire.com/pa/baconbacon/

Quote:

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Originally Posted by outback

I have watched this very carefully. If I understand all you experts, what your saying is there ain't no little hamster goin' hell for leather in me router.

I thought when ya plugged it in it just fed him a bit, so he'd work. :o

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The one in my table router is called "Electron" I must admit I need to "Erg" him on occasionallyhttp://www.woodworkforums.ubeaut.com...cons/icon7.gif.

The one in the hand router is called "Amp" needs the soft start feature to limit his consumption to prevent him burning out because of the poor quality of the windings.http://www.woodworkforums.ubeaut.com...cons/icon7.gifhttp://www.woodworkforums.ubeaut.com...cons/icon7.gif

(sorry, no quick rejoinders here you are all down the pub or sleeping it off when i'm allowed to play)

I'm glad I sold insurance it seems easier than being an electrical engineer :p :p :p :p :p

I got some nasty pop ups when I went to that link you just put on.????????

I can see how you could get a hamster running hell for leather in a small router or trimmer. What I want to know is how on earth did they get two and a half horses into my big router and does the RSPCA know about this? :confused: And watt are these mysterious things that everyone reckons is equal to a horsepower and why won't anyone say watt they are? :D

Mick

Quote:

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Originally Posted by Peter R

Q1. Have Windows 98, does not have the facility you suggested.

Peter R.

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Getting back on track, Peter. Win98 computers have this function in the setup, ie when you turn the computer on, amongst all the crap that scrolls up the screen is "hit DEL to enter setup" (or something like that, it's a while since I had Win98). Go to "Power Management Setup", scroll down to "PWRON after PWR fail" and toggle it to "off". Then your computer won't turn itself on when the power comes on again. I used the feature the other way, ie. to turn the computer on when I switched the power point on at the wall that had everything connected to it, printer, modem, speakers etc.
Cheers,
Graeme.

Quote:

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Originally Posted by journeyman Mick

I can see how you could get a hamster running hell for leather in a small router or trimmer. What I want to know is how on earth did they get two and a half horses into my big router Mick

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May not be horses, just Bigger Hampsters on steroids, I think anything that can lift 1cwt 1foot for 1minute will do.

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Originally Posted by jow104

I got some nasty pop ups when I went to that link you just put on.????????

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Don't shoot the messenger :D I just put the link up.