Hi there,
I'm wanting to build a power / energy meter that can calculate RMS voltages and currents + real, reactive & apparent power, energy, power factor, etc..
I have scaled voltage and current signals coming into a 8 bit PIC micro. Obviously these are instantaneous values, which can be multiplied digitally to get P(t). Now, how do I integrate this digitally (using C... and limited memory!), to get energy? And also, how do I get RMS values and the power factor?
Many thanks
I'm wanting to build a power / energy meter that can calculate RMS voltages and currents + real, reactive & apparent power, energy, power factor, etc..
I have scaled voltage and current signals coming into a 8 bit PIC micro. Obviously these are instantaneous values, which can be multiplied digitally to get P(t). Now, how do I integrate this digitally (using C... and limited memory!), to get energy? And also, how do I get RMS values and the power factor?
Many thanks