Electronic Circuits and Tutorials
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Electronics Schematics - R
RMS - Root Mean Square Circuits
Circuit measures true rms and average
value: 09/26/2002 EDN -
Design Ideas / The circuit in Figure 1 measures both
the true-rms value and the rectified average value
of an ac signal. This design uses two low-cost ICs
in SOIC packages and consumes only 180 µA of
quiescent current. Operating from a single
5V supply, the circuit has an input dynamic
range of less than 30 mV to greater than 3V
rms.
Extend RMS-To-DC Converter's Range:
09/05/00 Electronic Design - Ideas for Design / This
Idea For Design was originally published July 12,
1990. Comparator hysteresis can extend the dynamic
range of ac signal measurement by auto ranging an
rms-to-dc converter.
Linear-RMS Phase Control Improves Thyristor-Based Thermostat: 03/05/01 Electronic Design - Ideas for Design / Precision temperature control circuits for small thermal loads like oscillator crystals and voltage references tend to be fairly easy to design. This is because simple, well-behaved, linear-output drivers running from regulated dc supplies are often.
Paralleling RMS Converters Speeds Settling.: 05/26/94 EDN-Design Ideas RMS to DC Converter is Accurate & Stable: 09/14/95 EDN-Design Ideas