| 摘要 |
FIELD: electrical engineering; frequency relays. ^ SUBSTANCE: proposed relay that functions to increase and decrease frequency and well as to vary frequency variation rate has isolating transformer, frequency-dependent component, two rectifiers, algebraic adder, three threshold units, two AND gates, two final components, subtraction unit, adder, and two low-pass filters; reduction in signal amplitude across output of frequency-dependent component relative to its input signal toward its reduction is proportional to modulus of its input signal frequency deviation from rated value. ^ EFFECT: enlarged functional capabilities of relay. ^ 1 cl, 1 dwg |
