Circuit for amplifying and shaping an AC signal

Details Circuit for amplifying and shaping an AC signal Circuit for amplifying and shaping an AC signal

1988-02-22

1989-05-30

Miller, Stanley D.

Electrical transmission or interconnection systems

Nonlinear reactor systems

Parametrons

307305, 307309, 328 32R, 330 62, H03K 1790, H03K 1772, H03K 1918, H03K 402

Patent

active

048354155

ABSTRACT:
A circuit for amplifying a measurement signal having an AC component and obtained from the tap of a voltage divider which is connected via a dropping resistor to a supply voltage and includes at least one magneto-resistor, and for shaping the measurement signal into an output signal of approximately rectangular shape. To simplify the circuit and reduce the number and size of the components and leads to a minimum, the current produced by the supply voltage is changed essentially in accordance with the changes of the AC component of the measurement signal by connecting a controllable impedance into the supply-voltage lead, the impedance being controlled by the measurement signal.

REFERENCES:
patent: 3435323 (1969-03-01), Wieder
patent: 3535626 (1970-10-01), Uemura
patent: 3746887 (1973-07-01), Lowel
patent: 3838298 (1974-09-01), Torres
patent: 4491742 (1985-01-01), Akamatsu
patent: 4683429 (1987-07-01), Popovic
patent: 4733177 (1988-03-01), Pawletko
Elektronik 10/17.5.1985; Dipl.-Phys. August Petersen "Magnetoresistive Sensoren im Kfz".

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