Auto-averaging RC time constant calibration

Details Auto-averaging RC time constant calibration Auto-averaging RC time constant calibration

2011-03-22

2011-03-22

Tso, Edward (Department: 2858)

Electricity: battery or capacitor charging or discharging

Battery or cell discharging

With charging

Reexamination Certificate

active

07911181

ABSTRACT:
This disclosure relates to auto-averaging RC time constant calibration are described. An auto-averaging calibration circuit includes two capacitor branches, where capacitors in the capacitor branches, charge and discharge alternately to accommodate multiple charging cycles in one measurement cycle for measuring a RC time constant. A value of RC time constant is obtained in each charging cycle. A final value of the RC time constant can be determined by averaging various values of the time constants obtained during each charging cycle.

REFERENCES:
patent: 4157481 (1979-06-01), Walton
patent: 4433278 (1984-02-01), Lowndes et al.
patent: 6470283 (2002-10-01), Edel
patent: 2006/0071639 (2006-04-01), Ross et al.
patent: 102008059791 (2009-07-01), None

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