Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1984-02-27
1986-12-09
Westin, Edward P.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
33125A, 356374, 307311, A45B 308, H01J 4014
Patent
active
046282017
ABSTRACT:
A digital electric length or angle measuring system includes a scanning unit for scanning a measuring scale and an evaluating circuit for evaluating scanning units generated by a plurality of scanning elements of the scanning unit. The scanning elements are connected to differential amplifiers included in the evaluating circuit. In order to balance faulty signal parameters of the scanning signals of the scanning elements, a balancing circuit is provided which includes bridge circuits. In each case, one diagonal of the bridge circuit is circuited in parallel to the scanning elements in the scanning unit and is connected to the inputs of the differential amplifier of the evaluating arrangement. Furthermore, each of the bridge circuits includes at least one balancing element such as a photosensor.
REFERENCES:
patent: 3340427 (1967-09-01), Bisso
patent: 3427463 (1969-02-01), Weyrauch
patent: 4225931 (1980-09-01), Schwefel
patent: 4385836 (1983-05-01), Schmitt
Allen Stephone
Dr. Johannes Heidenhain GmbH
Westin Edward P.
LandOfFree
Scanning signal balancing 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 Scanning signal balancing circuit, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Scanning signal balancing circuit will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-1386595