| 摘要 |
The proposed device for checking the service life of a group of high-voltage air circuit breakers contains current transducers, comparators, switches, pulse counters, OR logic elements, a reset circuit, a pulse former, AND logic elements, pulse generators, commutation detectors, monostable multivibrators, pressure transducers, a NOT logic element, a functional converter, a data register, EXCLUSIVE OR logic elements, and two scaling amplifiers.
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