描述
继电器控制逻辑依靠触点的机械动作实现控制,工作频率低,且机械触点还会出现抖动问题。而PLC是由程序指令控制半导体电路来实现控制,属于无触点控制,速度极快,且不会出现抖动。
HP/Agilent 16034E Test Fixture for SMD Components
HP/Agilent 16555A 500MHz Timing-110 MHz State, 68 chann
HP/Agilent N6743B DC Power Module, 20V, 5A, 100W
HP/Agilent 37915A 2.048 Mb/s Interface Card for the 379
HP/Agilent 33320H Programmable Attenuator, DC-18GHz, 0-
HP/Agilent 3336B-04 21 MHz Synthesizer/Level Generator
HP/Agilent 37742A 2M Handheld Test Set
HP/Agilent 54601A Digital Oscilloscope, 4 Channels, 100
HP/Agilent 59510A Output Isolation, Relay Accessory
HP/Agilent 66104A DC Power Supply Module 0 to 60V, 2.5A
HP/Agilent 54502A Digital Oscilloscope 400MHZ