描述
PLC控制系统的输入电路设计。PLC供电电源一般为AC85—240V，适应电源范围较宽，但为了抗干扰，应加装电源净化元件（如电源滤波器、1:1隔离变压器等）;隔离变压器也可以采用双隔离技术，即变压器的初、次级线圈屏蔽层与初级电气中性点接大地，次级线圈屏蔽层接PLC输入电路的地，以减小高低频脉冲干扰。
Save $1850 National Instruments PCI-6032E FREE WW SHIP
NI National Instruments PCI-CAN/LS-2 Series 2 Card
NATIONAL INSTRUMENTS NI PXI-8335 MXI-3 PXI TO VXI BRIDG
National Instruments ISA GPIB-PCIIA card
CB-100 Breakouts w National Instruments R1005050 1meter
NEW National Instruments NI 181065 GPIB-PCIIA ISA Card
NATIONAL INSTRUMENTS SCXI-1163R 32 CHANNEL S/S RELAY
National Instrument AMUX-64T analog multiplexer
DB9S Solder Cup & Encl for National Instruments #100542
National Instruments: 763061-0 Type X2 1.1 Meter Cable
SAVE $500 National Instruments NI BNC-2096
