In SX Microcontrollers, SX/B Compiler and SX-Key Tool, prcoy wrote:

John,
You can read DC Amps by using a 'shunt' resistor. This is usually a 3-10 watt resistor with a value of .1  to .005 ohms. The ADC just reads the voltage drop across the resistor and calculates the current. Too much resistance will degrade your output voltage.
AC Amps is a whole different animal. Current transformers and precision rectifiers..shudders.

Paul

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