The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Oct. 04, 2011
Filed:
May. 25, 2007
Andrei Uhov, St. Petersburg, RU;
Andrei Uhov, St. Petersburg, RU;
Electrolux Home Products Corporation N.V., Zaventem, BE;
Abstract
A method of measuring the capacitance of a capacitive component (), whereby a digital bridge with two measuring branches generates a first signal (B) defined by a train of measuring pulses (M) having a frequency (f) related to the unknown capacitance being measured, and a second signal (B) defined by a train of reference pulses (L) having a frequency (f) related to a reference capacitance (C) of known value. The time difference (ΔT) between the times (T, T) taken by the two measuring branches of the digital bridge to generate an equal number of pulses (Th, Th) is calculated. The capacitance difference (ΔC) between the unknown capacitance and the reference capacitance (C) is determined as a function of the time difference (ΔT). The unknown capacitance of the capacitive component () is calculated on the basis of the reference capacitance (C) and the capacitance difference (ΔC).