Radiant energy – Photocells; circuits and apparatus – Optical or pre-photocell system
Patent
1990-08-23
1992-05-26
Nelms, David C.
Radiant energy
Photocells; circuits and apparatus
Optical or pre-photocell system
2502082, 250214A, G01D 534
Patent
active
051171031
ABSTRACT:
Optoelectronic positioning tap circuit arrangements of the type in which a beam from a light source irradiates two adjacently arranged diodes connected at their cathode ends and further including an element that is perpendicularly movable with respect to the beam path to partially shade the beam and supply a signal proportional to the difference between the diode currents, such signal characterizing the position of the shading element in the light beam. Sensitivity is increased by utilizing both diode currents to achieve a deflection-proportional output signal by short-circuit current meansurement. Existing current sum points are decoupled as each of the (three) terminals of the series diode circuit is connected to a single current/voltage converter stage. The current sum is directly detected at the input of the voltage converter stage that is connected to the (coupled) cathodes to control the operating point of the light source.
REFERENCES:
patent: 4607159 (1986-08-01), Goodson et al.
patent: 4748323 (1988-05-01), Holiday
patent: 4994669 (1991-02-01), Stern
Davenport T.
Kramsky Elliott N.
Litef GmbH
Nelms David C.
LandOfFree
Circuit for optoelectronic positioning tap does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Circuit for optoelectronic positioning tap, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circuit for optoelectronic positioning tap will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-421985