Patent ID: 7148697
Filing Date: 2006-12-12
Classification: G01R

Abstract:
1. A measurement assembly for measuring an electrical characteristic of a capacitor under test, comprising: a constant current assembly for selectively charging the capacitor under test with a constant charge current and discharging the capacitor under test at a constant discharge current; a counter incremented during a measurement period of a selected one of the charging and discharging; and a display driven to display a value of the counter as a representation of capacitance of the capacitor under test; and further comprising a logic unit for detecting an error condition during the measurement period, the logic unit including logic to: determine a change in voltage across the capacitor during each of a plurality of time intervals; compare the change in voltage for each time interval to a threshold value; and output an error condition indication signal if the change in voltage for any of the time intervals exceeds the threshold voltage.