| 摘要 |
FIELD: electrical engineering; electronic frequency relays. ^ SUBSTANCE: proposed frequency relay that performs dual function of frequency increase and decrease has frequency-dependent component, adder, five threshold units, two AND gates, final component, clock generator, pulse frequency divider, and monostable multivibrator; input of frequency-dependent component functions as input of signal under check and input of monostable multivibrator, as trigger input of frequency relay. ^ EFFECT: enlarged functional capabilities. ^ 1 cl, 2 dwg |
