Submitted by TrystanLea on Thu, 01/07/2010 - 11:56.
Hey Louis
Im glad this wesite is useful to you, thanks!
If you look at the circuit schematic above your CT sensor is like the one I have but with the resistor that is paralel to the CT in the circuit above included in your CT. You will still need the biasing resistors to keep the input voltage to the arduino in range. Once you have that built, try and run the sampler program so that you can see the analog input waveform. You may find that the voltage waveform has a very small amplitude since your CT will give 0.33Vac at 150Amps, mine is currently configured at 0.33Vac at 5Amps. But have a go and let me know what you get and we can go from there.
Trystan
Hey Louis Im glad this wesite
Hey Louis
Im glad this wesite is useful to you, thanks!
If you look at the circuit schematic above your CT sensor is like the one I have but with the resistor that is paralel to the CT in the circuit above included in your CT. You will still need the biasing resistors to keep the input voltage to the arduino in range. Once you have that built, try and run the sampler program so that you can see the analog input waveform. You may find that the voltage waveform has a very small amplitude since your CT will give 0.33Vac at 150Amps, mine is currently configured at 0.33Vac at 5Amps. But have a go and let me know what you get and we can go from there.
Trystan