ANSWERS: 1
  • 1) According to this text, all of them: "- Electro Dynamic Instruments: The reading is then the true RMS value of the measured unit! - electrostatic volt meter: So it is also a "True RMS" meter. - Moving Iron Another true RMS meter! - All the AC ranges (voltage and current) use a thermocouple to convert the AC to DC. True RMS thus guaranteed! " Source and further information: http://www.pressebo.com/lo00012.htm 2) "True-RMS voltmeters use an integrated circuit which computes the true root-mean-square value of complex signals." Source and further information: http://www.newportus.com/manuals/ACGUIDE.htm

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