Common mode voltage rejection circuit

Details Common mode voltage rejection circuit Common mode voltage rejection circuit

1980-08-06

1983-07-12

Karlsen, Ernest F.

Electricity: measuring and testing

Measuring, testing, or sensing electricity, per se

With coupling means

324123R, 330 69, 330258, G01R 130, H03F 368

Patent

active

043933475

ABSTRACT:
A circuit for reducing the amplitude of a common mode voltage across the inputs of a differential measuring instrument. The circuit comprises a voltage divider between each of the differential input terminals and the instrument zero reference point on one side, and between the instrument's zero reference point and the common mode voltage reference (usually earth) on the other side. A potentiometer forms the divider junction at the instrument reference point and is used to compensate for resistance value tolerances in the circuit and any imbalance in the input path impedances of the two differential inputs. The value of the voltage divider resistors are selected so as to bring the instrument reference point as close as possible to the level of the common mode voltage without unduly reducing the instrument input impedance.

REFERENCES:
patent: 2999948 (1961-09-01), Beckwith
patent: 3209277 (1965-09-01), Burwen
patent: 3629719 (1969-08-01), Heller et al.
patent: 3652949 (1972-03-01), Szabo

Affiliated with

Also associated with

Rating

Common mode voltage rejection circuit does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Common mode voltage rejection circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Common mode voltage rejection circuit will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-200808