How much resistance is required to limit current flow to 20 mA with 24V supply?
How much resistance is required to limit current flow to 20 mA with 24V supply? In many control systems 24VDC is used as supply voltage. To limit the current to 20 mA a resistance of (24V/ 20 mA = 1200 ohm) is necessary. How do you test a 4-20mA sensor? Access the signal wires (typically […]