| 摘要 |
FIELD: electricity.SUBSTANCE: current relay comprises intermediary current transformer, rectifier, actuating element, four threshold unit, two AND elements, bidirectional counter, pulse counter, univibrator, clock generator, frequency divider, subtract unit, summator, clipper-limiter, non-recursive filter, short pulse shaper, RS-trigger, two keys, unit of OR elements.EFFECT: high noise-immunity.2 dwg |
