Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1986-05-27
1987-12-01
Heyman, John S.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
307513, 307309, 307310, 73766, 328165, G01R 1700, H03F 1500
Patent
active
047106522
ABSTRACT:
The present invention is an electrical circuit for use with a four-pole device. The four-pole device has two input connections and two output connections. The output of the four-pole device is measured at one output relative to a base potential present at the other output.
The electrical circuit comprises a two-poled switch, which is connected in such a manner, that in its first position a signal source is connected with the first input of the four-pole device and the output of an amplifier is connected with the second input of the four-pole device. In the switch's second position, the signal source is connected with the second input of the four-pole device and the output of the amplifier is connected with the first input of the four-pole device. The output of the four-pole device, which is at the base potential, is connected to an inverting input of the amplifier, while the non-inverting input of the amplifier is connected to a constant reference voltage (U.sub.R). When connected in this fashion, the amplifier serves to compensate base potential present at one output of the four-pole device.
The switching arrangement serves to switch the polarity of an information containing component of the output signal of the four-pole device (which depends on the input signal source) without reversing the polarity of an interference component, which is produced within the four-pole device or which is produced in electronic components connected at the output side of the four-pole device. This may be useful for separating the information-containing and interference components in the output signal of the four-pole device.
REFERENCES:
patent: 3555310 (1971-01-01), Haeusler
patent: 3582690 (1971-06-01), Yerman
patent: 3671769 (1972-06-01), Tomomitsu et al.
patent: 4142405 (1979-03-01), Stevens
patent: 4292582 (1981-09-01), Hino
patent: 4404856 (1983-09-01), Honda et al.
patent: 4463274 (1984-07-01), Swartz
Heyman John S.
LGZ Landis & Gyr Zug AG
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