... logic integrated circuit 论理集积回路 logic relay circuit 逻辑继电器电路 field programmable logic integrated circuit 现场可编程序逻辑集成电路 ...
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继电器是保护系统的逻辑元件，它感知故障，并使断路器解扣电路带电和断路器打开触点。
Relays are the logic elements of a protection system which sense the fault and cause the circuit-breaker trip circuits to be energized and the breakers to open their contacts.
它由自耦变压器、数字逻辑电路和低压小继电器电路组成。
This device consists of self-coupling transfer, digital logic circuit and low voltage relay circuit.
本文将机车继电器控制电路等效为数字组合逻辑电路，建立了它的固定故障等效模型。
The electric locomotive bang-bang circuit is converted into an equivalent digitalcombinational logic circuit for setting up its stuck-at fault model.
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