# Analog voltameters meters and ammeters

Discussion in 'Homework Help' started by bwd111, Jul 28, 2013.

1. ### bwd111 Thread Starter Member

Jul 24, 2013
117
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I know digital meters read effective voltages and currents values in an ac circiut so what voltages do analog meters read?

average,paek to peak or maximum or effective

Sep 7, 2009
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3. ### t_n_k AAC Fanatic!

Mar 6, 2009
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Last edited: Jul 29, 2013
4. ### bwd111 Thread Starter Member

Jul 24, 2013
117
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That's why my boss told me as well but There was nothing on google on this subject. Its a very tough question that google refuses to answer.

5. ### bwd111 Thread Starter Member

Jul 24, 2013
117
1
I searched and searched this forum and google as I always search before I ask due to we live in a microwave world where we are in the right now generation so a search before ask is always faster.

6. ### MrChips Moderator

Oct 2, 2009
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7. ### bwd111 Thread Starter Member

Jul 24, 2013
117
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My mistake I my fault I posted this twice first time for using fourms. The debate was on what type of voltage does an volt meter and ammeter read in an ac circuit. effective, peak to peak,maxium or average voltage. I know electronic meters read effective but unsure what the analog meter reads in an ac circuit

8. ### bountyhunter Well-Known Member

Sep 7, 2009
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It's not a tough question it is just not something simple enough to cover in two paragraphs.

http://vsagar.com/2012/10/peak-rms-average-ac-voltage-current/

http://technologyinterface.nmsu.edu/Fall07/30_Cartwright/index.pdf

http://www.toolingu.com/definition-550210-76412-effective-value.html

http://people.sinclair.edu/nickreeder/eet114/mod08.htm

http://www.electronics-tutorials.ws/accircuits/AC-waveform.html

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Jul 24, 2013
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10. ### WBahn Moderator

Mar 31, 2012
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If, by "electronic meters" you mean digital meters, then it is not always the case that they read effective voltage for AC waveforms. I don't know about the cheaper meters today, but a decade or two ago most digital meters were "average responding" just like the typical analog meters. The computations necessary to do True RMS responding were more that was practical in a cheap meter. You knew if you had a True RMS responding meter because they very proudly said so right on the front of the meter, sometimes in several places.

11. ### bwd111 Thread Starter Member

Jul 24, 2013
117
1
Well the correct answer was avergae. Between the 4 choices of effective,average,peak to peak and max. The correct was Average

12. ### WBahn Moderator

Mar 31, 2012
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7,696
The correct answer according to who?

It is demonstrably not correct, since entire categories of analog meters respond to the RMS value.