| 摘要 |
A device for switching unit service life control comprises a current sensor, a pulse counter, a pulse generator, a signal shaper, a setting zero unit, an OR element, comparators, a converter, a NOT element, a register, a digital bus, a digital cross-over switch, a univibrator, a differentiating element, AC voltage converter, a motion start sensor, a voltage sensor, a flip-flop, elements and a delay signal unit, an on-off time initialization unit and indicators. |
