Analog arithmetic operation circuit

Details Analog arithmetic operation circuit Analog arithmetic operation circuit

1982-09-03

1985-06-18

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307490, 307498, 328144, 328160, 328161, 330252, 330257, H03F 345, H03F 304

Patent

active

045242925

ABSTRACT:
An analog arithmetic operation circuit with small operation errors. An analog arithmetic operation circuit comprises: a first transistor; a second transistor, a base of which is connected to a first terminal of an emitter-collector path of the first transistor and a first terminal of an emitter-collector path of which is connected to a first power source; a third transistor, a base of which is connected to the base of the first transistor; a fourth transistor, a base of which is connected to a first terminal of an emitter-collector path of the third transistor and a first terminal of an emitter-collector path of which is connected to the first power source; and a circuit for supplying a given current which is the same as a predetermined input current to a second terminal of the emitter-collector path of one of the third and fourth transistors.

REFERENCES:
patent: 3805092 (1974-04-01), Henson
patent: 3838262 (1974-09-01), van de Plassche
patent: 3906246 (1975-09-01), Okada
patent: 3935478 (1976-01-01), Okada et al.
patent: 3967105 (1976-06-01), Harrington
patent: 4323797 (1982-04-01), Embree et al.
patent: 4338527 (1982-07-01), Nagano
Barker, "Translinear Frequency Doubler", 44, Int'l J. Electronics, 461-464, (1978).

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