Adjustable RMS circuit

Details Adjustable RMS circuit Adjustable RMS circuit

1986-09-29

1988-05-17

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307492, 328 26, 328144, 328145, 324132, G02G 712, H03K 500, G01R 1510

Patent

active

047453095

ABSTRACT:
An adjustable RMS circuit for an input signal is first compressed by use of a bipolar logarithmic converter. The low-level, high-frequency accuracy of the converter may be improved by increasing its gain in response to the presence of such components. An inverted half wave rectified signal derived from the compressed signal is then combined with a half intensity signal derived from the compressed signal to produce a signal which is substantially equal to the absolute value of the compressed signal. A reference signal of variably selectable level is further combined with the combined signal to provide an output signal offset to a desired threshold level.

REFERENCES:
patent: 3657528 (1972-04-01), Plante
patent: 4065682 (1977-12-01), Evans
patent: 4109165 (1978-08-01), Katakura et al.

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