Abstract
THE product or quotient of two rapidly varying quantities is difficult to obtain by conventional electronic-analogue methods. Desirable features in a multifmer include : (a) symmetry of response to positive and negative inputs ; (b) an absolute indication of zero input, with consequent freedom from zero drift ; (c) independence of normal changes in electronic characteristics ; (d) rapidity and accuracy of response.
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References
MacKay, D. M., Brit. Prov. Pat. Spec. No. 11161 (1948). The same principle has been the subject of an unpublished independent investigation by D. J. Mynall.
MacKay, D. M., Nature, 159, 406 (1946).
Mynall, D. J., Nature, 159, 743 (1946).
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Deeley, E., Mackay, D. Multiplication and Division by Electronic-Analogue Methods. Nature 163, 650 (1949). https://doi.org/10.1038/163650a0
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DOI: https://doi.org/10.1038/163650a0