Method of determining a zero point of a current sensor

Electricity: measuring and testing – Electric lamp or discharge device – Electric lamp

Reexamination Certificate

Rate now

  [ 0.00 ] – not rated yet Voters 0   Comments 0

Details

C315S20000A, C315S219000

Reexamination Certificate

active

07408356

ABSTRACT:
A method of determining a zero point of a current sensor in a circuit arrangement for operating a gas discharge lamp includes switching off the current through the sensor for a short period during a first half wave and determining a first test value. Then the current through the sensor is switched off for a short period during a second half wave having a different polarity and a second test value is determined. The average value of the two test values is formed and the zero point is determined using the average value. It is prevented thereby that the zero point drifts during lamp operation, and that amplitudes of the positive and negative half waves of the lamp current are formed differently.

REFERENCES:
patent: 4507569 (1985-03-01), Hess, II
patent: 4734624 (1988-03-01), Nagase et al.
patent: 5422546 (1995-06-01), Nilssen
patent: 2002/0014856 (2002-02-01), Buij et al.
patent: 0583841 (1994-02-01), None
patent: 0877232 (1998-11-01), None
patent: 02141673 (1990-05-01), None
patent: 04134270 (1992-05-01), None
patent: 04184267 (1992-07-01), None
patent: 9908373 (1999-02-01), None

LandOfFree

Say what you really think

Search LandOfFree.com for the USA inventors and patents. Rate them and share your experience with other people.

Rating

Method of determining a zero point of a current sensor does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method of determining a zero point of a current sensor, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method of determining a zero point of a current sensor will most certainly appreciate the feedback.

Rate now

     

Profile ID: LFUS-PAI-O-3998284

  Search
All data on this website is collected from public sources. Our data reflects the most accurate information available at the time of publication.