Optical detector circuit for photometric instrument

Details Optical detector circuit for photometric instrument Optical detector circuit for photometric instrument

H - Electricity

03

M

354/81

H03M 1/52 (2006.01) H03M 1/00 (2006.01)

Patent

CA 1272806

OPTICAL DETECTOR CIRCUIT FOR PHOTOMETRIC INSTRUMENT ABSTRACT OF THE DISCLOSURE An optical detector circuit for a photometric instrument for providing a high precision, low cost A/D conversion of a detected optical signal. A sampled signal is integrated in a sample signal integrator while a reference signal integrator is integrated in a reference signal integerator. Using dual slope techniques, the integrated reference signal is provided as an input signal to the sample signal integrator during a de-integration cycle to provide a ratio of the detected signal to the reference signal, useful in nephelometers. An inverted blanking signal may also be integrated in the sample integrator prior to an integration of the sample signal to improve the accuracy of the dual slope integration. The period of integration is selected as a multiple of the primary sources of interfering noise such as power line and fluorescent light frequencies.

537363

Affiliated with

Also associated with

Rating

Optical detector circuit for photometric instrument does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Optical detector circuit for photometric instrument, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Optical detector circuit for photometric instrument will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1168495