Multiplier circuit

Details Multiplier circuit Multiplier circuit

1979-02-28

1982-02-16

Miller, Jr., Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

328144, 328145, 328160, G06G 724, G06G 712

Patent

active

043161073

ABSTRACT:
A multiplier circuit for controlling gain amplification of an electrical input signal responsively to a control signal comprises log conversion means for producing a log signal as a logarithmic function of the input signal, means for producing a multiplier signal as a function of the sum of the log signal and the control signal and antilog-conversion means for producing an antilog signal as an antilogarithmic function of the multiplied signal. The improvement is characterized by the log conversion means and antilog conversion means each including passive elements capable of exhibiting log-linear and antilog-linear transfer characteristics. The passive elements are preferably in the form of diode elements connected in a diode bridge.

REFERENCES:
patent: 2842664 (1958-07-01), Martin
patent: 3152250 (1964-10-01), Platzer
patent: 3714462 (1973-01-01), Blackmer
patent: 3938038 (1976-02-01), Campbell
patent: 4038566 (1977-07-01), Evans
A Simple Electronic Multiplier by H. Norsworthy, Electronic Eng., 2/54, pp. 72-74, vol. 26, No. 312.

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