Jump to content

Recommended Posts

Posted

i have a question, for all you "electronic geniuses", out there.

what is "true RMS".

 

 

today, i swapped a $50.00 "wal-mart gift card", for a FLUKE 117 true rms electrician's multi tester.

brand new, still in the shrink wrapper.

how bad did i get hosed?

just jt

Posted

Boy you got hosed bad. Being the nice guy that I am you can send it to me and I will give you your money back just out of the kindness of my heart.

Posted
i have a question, for all you "electronic geniuses", out there.

what is "true RMS".

 

 

today, i swapped a $50.00 "wal-mart gift card", for a FLUKE 117 true rms electrician's multi tester.

brand new, still in the shrink wrapper.

how bad did i get hosed?

just jt

 

I would say you did allright. Online price is nearly $150.

 

http://www.testequipmentdepot.com/fluke/dmm/117.htm?gclid=CIjAz6SU_ZQCFQH0Igod6wOlrA

 

DT

Posted

RMS - Root Mean Square is a true measurement of amperage and/or power. AC power is transmitted in a sinusoidal wave form at 60 Hz (50 Hz in Europe). If you take the peak of the amperage and multiply it by (sqrt2)/2 = 0.707, you end up with the RMS value. In effect, it equals the true area under the curve.

 

(I hope I got that right)

 

You got a good buy.

 

RR

Posted

Good meter. For normal usage true RMS won't make a difference. It matters when trouble shooting some stuff Like motor controllers, VSD,some power supply's/generators. With digital meters you will get "ghost" readings they are real sensitive to RF and any induced voltage. Rod

Posted
RMS - Root Mean Square is a true measurement of amperage and/or power. AC power is transmitted in a sinusoidal wave form at 60 Hz (50 Hz in Europe). If you take the peak of the amperage and multiply it by (sqrt2)/2 = 0.707, you end up with the RMS value. In effect, it equals the true area under the curve.

 

(I hope I got that right)

 

You got a good buy.

 

RR

 

RMS is root mean square, but that formula is wrong, isn't it? I thought the formula was 1/(sqrt2) to equal .707. For some reason the answer comes out the same. I don't know why that works. Maybe that's just the magic of the number.

Posted
for all you "mathematicians" then...

 

what's the answer to this complicated linear equasion?

 

3 + 4 * 5 = ?

 

 

I'm not 100 Percent sure about the Characters you used, but the Result would be 23 here in Germany.

 

But it could possibly mean also 16807.

Posted

I gather that the * is a substitute for X.

In that case the question is: what is 3+4X5?

We (should) know that multiplicands and dividers are acted on first.

In this case the solution is

3 + (4 X 5)

= 3 + 20

= 23.

 

I win (too)!:clap2:

Posted

Unless otherwise indicated, (ie parenthesis) don't you perform the math in the order it's presented? Then that would equal 35

Posted
Unless otherwise indicated, (ie parenthesis) don't you perform the math in the order it's presented? Then that would equal 35

Basic grade school math - the Ausie got it right. It's 23.

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
×
×
  • Create New...