Hello people, I'm new to the forum and I have a simple question for a university laboratories report about measuring instruments
A multimeter, either analogue or digital has a limit in frequency for readings in AC Voltage. I want to know why there is such a limit.
I believe that in the digital multimeter is because the multimeter has to rectify the AC wave and in doing that applies some capacitors to reduce the ripple in the rectified DC voltage so we obtain sometime like an almost rectified wave with a period, but if the frequency is greater than the limit the samples taken is wrong because it takes no just the readings of one period of the almost DC rectified signal, but actually takes values of the other periods if the frequency is too high.
I know in the analogue multimeter there is a rectifier like in the digital, but I don’t know what the physical effect is over the needle and thus the necessity of the limit
I would appreciate a lot any help over this question or comment over any of the limitations of a multimeter either analogue or digital, and pardon me in advance for my bad English, is not my native language
A multimeter, either analogue or digital has a limit in frequency for readings in AC Voltage. I want to know why there is such a limit.
I believe that in the digital multimeter is because the multimeter has to rectify the AC wave and in doing that applies some capacitors to reduce the ripple in the rectified DC voltage so we obtain sometime like an almost rectified wave with a period, but if the frequency is greater than the limit the samples taken is wrong because it takes no just the readings of one period of the almost DC rectified signal, but actually takes values of the other periods if the frequency is too high.
I know in the analogue multimeter there is a rectifier like in the digital, but I don’t know what the physical effect is over the needle and thus the necessity of the limit
I would appreciate a lot any help over this question or comment over any of the limitations of a multimeter either analogue or digital, and pardon me in advance for my bad English, is not my native language