Micro ohmmeter

Details Micro ohmmeter Micro ohmmeter

G - Physics

01

R

324/45

G01R 27/00 (2006.01) G01R 27/14 (2006.01)

Patent

CA 1316213

ABSTRACT A pair of a first and a second R-C integrating circuits is connected in series. A first switch S1 supplies a first combined voltage E1+E3 of a first positive threshold voltage E1 and a positive initial set up voltage E3 to a first capacitor in the first R-C circuit, and a second switch S2 supplies a second capacitor with a second combined voltage of a second positive threshold voltage E2 with a negative initial set up voltage -E4. The switches S1 and S2 are closed before input of the signal to be measured. The switches are opened after the input of the signal. A first comparator compares a first discharged voltage output from the first capacitor and the first threshold voltage E1, and a second comparator compares a second discharged voltage output from the second capacitor and the second threshold voltage E2. A logic circuit is connected to the output terminals of the first and second comparators, respectively, and determine in conjunction with a timing circuit whether the first and second discharged voltages are within a range between the first threshold voltage E1, and second threshold voltage E2 within a predetermined time period of the input of the signal to be measured, so as to provide an indication to judge the right time for resistance measurements.

605317

Affiliated with

Also associated with

Rating

Micro ohmmeter does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Micro ohmmeter, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Micro ohmmeter will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFCA-PAI-O-1203754