Timeline for Can a voltmeter itself disturb the exact measuring of voltage?
Current License: CC BY-SA 4.0
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| Aug 5, 2020 at 13:01 | comment | added | vu2nan | Hi Circuit fantasist, Thanks to you, I reviewed my answer, found the word 'analogue' missing in 3 places and rectified that. I am in agreement with your views on this subject. | |
| Aug 5, 2020 at 7:12 | comment | added | Circuit fantasist | You are welcome! Of course, I am aware that you know all this... but it would be interesting to comment on it. Few people know where this weird "ohms/volt" come from and can not understand why the input attenuator of the classic voltmeter is made in this way (as a switchable resistor instead as a switchable potentiometer). BTW I also never leave a comment unanswered because I think this is at least a sign of elementary culture and upbringing... | |
| Aug 5, 2020 at 6:22 | comment | added | vu2nan | Thank you very much! | |
| Aug 5, 2020 at 3:05 | history | edited | vu2nan | CC BY-SA 4.0 |
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| Aug 4, 2020 at 19:03 | comment | added | Circuit fantasist | The concept of "voltmeter sensitivity" is not relevant today. It was introduced for the purposes of electrodynamic type measuring instruments, which were essentially ammeters. To convert them into voltmeters, they connected a resistor in series acting as a "voltage-to-current converter". By changing its resistance, they changed the range. In such a "rheostat arrangement", the voltmeter resistance depends on the range. Hence the weird concepts of "voltmeter sensitivity" and "ohms/volt". Today's voltmeters are real voltmeters using a "potentiometer arrangement" with constant input resistance. | |
| Aug 2, 2020 at 17:23 | history | edited | vu2nan | CC BY-SA 4.0 |
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| Aug 2, 2020 at 17:11 | history | answered | vu2nan | CC BY-SA 4.0 |