Full wave rectifier having an operational amplifier

Details Full wave rectifier having an operational amplifier Full wave rectifier having an operational amplifier

1982-12-06

1986-02-18

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

328 26, 363127, 307571, 307497, H03K 500, H03F 316

Patent

active

045715025

ABSTRACT:
A full wave rectifier comprises an input terminal supplied with an AC signal and an output terminal for delivering a rectified DC signal. An operational amplifier having an inverting input terminal, amplifies the AC signal. A rectifier gain setting is provided by a first resistor connected between the input terminal and the inverting terminal of the amplifier. A second resistor, having the same resistance as the first resistor, is connected between the inverting terminal and output terminal of the amplifier. A depletion type MOS FET operates responsive to the output of the amplifier, for performing a switching operation.

REFERENCES:
patent: 3958170 (1976-05-01), Hodgson
"Designing with Operational Amplifiers", by Jerald Graeme, McGraw-Hill, 1977, chapter 5.
"Applications of MOSFET's in Microelectronics", by R. D. Lohman, Solid State Technology, 3/1966, pp. 23-29.
MOS Field-Effect Transistors and Integrated Circuits, 1973, by Paul Richman.
Electronic Engineering, Jun. 1980, "Precision Rectification", by D. Bowers, pp. 71-84.

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