Circuit for generating the square of a function without multipli

Details Circuit for generating the square of a function without multipli Circuit for generating the square of a function without multipli

1987-07-16

1988-08-23

Shoop, Jr., William M.

Communications: electrical

Audible indication

Percussion-type sound producer

364736, 364753, 364754, H03M 100

Patent

active

047664169

ABSTRACT:
A pair of feedback accumulators are employed in conjunction with an oversampled analog to digital converter to generate the squared binary representation of the analog input signal. Advantage is taken of the particular form of the output waveform from oversampled analog to digital converter circuits to generate not only a standard digital output, but also the squared output after a plurality of bit-time periods L. The circuit avoids the utilization of digital multiplier circuits to perform the squaring function. The circuit is particularly applicable in the construction of electronic circuit breakers which must compute a binary representation of the square of an analog input current level signal, I.sup.2.

REFERENCES:
patent: 4071842 (1978-01-01), Tewksbury
Tretter, Steven A., "Introduction to Discrete-Time Signal Processing", John Wiley & Sons, Inc., 1976, pp. 77-81.
Derusso, Paul M. et al., "State Variables for Engineers", John Wiley & Sons, Inc., 1965, pp. 407-410.

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