| 摘要 |
The proposed device for checking the service life of a group of switching units contains current transducers, analog comparators, switches, OR logic elements, triggers, pulse counters, a reset circuit for the proposed device, pulse forming circuits, a time delay unit, AND logic elements, coding units, a pulse generator, a decoding unit, a NOT logic element, a differentiator, commutation detectors, monostable multivibrators, a functional converter, a digital switching unit, and a digital comparator.
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