According to Fluke, an average-reading meter will read 10% high on a square wave, 40% low on the output of a single-phase diode rectifier, and anywhere from 5% to 30% low on the output of a three ...

So, route the square wave to an LC filter (or RC filter) to get a sine wave of the desired frequency. phase shift, an RC phase-shift oscillator can produce a sine wave output. An RC phase-shift ...

Other phase-shift oscillators using low-pass networks have been published, but most have been more complicated (some of them far more so). 1. This very-low-frequency sine- and square-wave ...

Here is a simple frequency doubler circuit that produces a square wave output with a precise 50 percent duty cycle. There are similar circuits in the literature [References 1, 2, 3] which require ...