| 摘要 |
The invention concerns an electronic circuit for monitoring voltage variation, comprising a high threshold terminal (VH) and a low threshold terminal (VB), and means for comparing the voltage sampled on said terminals with a reference voltage to determine whether voltage on the high threshold terminal is not higher than a predetermined threshold and whether the voltage on the low threshold is not lower than another predetermined threshold. Means (1-6) are provided to bring the voltage on the high threshold terminal to a low value less than the predetermined threshold or to a high value greater than a predetermined threshold, and to bring the voltage on the low threshold terminal to a high value greater than the other predetermined threshold or to a low value less than the other predetermined threshold. |
