| 摘要 |
<p>The invention involves the steps of: connecting a first terminal (A) of the capacitor to the midpoint (N1) of a first voltage-dividing bridge (L1); applying a first voltage (V1) to a second terminal (B) of the capacitor; keeping a voltage (V1), from a midpoint (N1) of the first dividing bridge, near a reference voltage (Vref); releasing a midpoint (N2) of a second dividing bridge (L2) by means of a constant current (I); applying a second voltage (GND) to the second terminal (B) of the capacitor when a voltage (V2) from the midpoint (N2) of the second bridge reaches a first threshold (Vref); and measuring the time needed for the voltage (V2) to reach a second threshold (Vref').</p> |
