Interference signal component compensation circuit
US4710652A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | May 27, 1986 |
| Grant date | Dec 1, 1987 |
| Priority date | — |
| Expiry date | May 27, 2006 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01R17/06
- WIPO fieldMeasurement
- WIPO sectorInstruments
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 compo…
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.