发表于:2007-09-26 12:33:00
楼主
How does the voltage sourcing for your Industrial Ethernet compare with that of others? A recent survey asked "What's the most common low-voltage power source used in your Ethernet applications?" By far the most common supply voltage is 24 VDC. The responses were:
24VDC: 45%
24VAC: 20%
12VDC: 17%
12VAC: 20%
Other: 10%