A/D Samples

• We note that with a 10bit A/D, the samples hover around 512
• This is because a 10 bit A/D has a max value of 1023, and the 4016 circuit inputs were biased at half voltage (mid 5V)

• Sampling a selected current transducer at a rate much higher than 60hz, we can see the 60hz sensed signal
• This is at a sampling rate of 1200Hz where there are 20 samples of every 60Hz cycle
• Note that the samples are not uniformly sinusoidal.
• This is because the current transducer is not a perfect linear sensor
• This will influence how we attempt to compute amplitude of a sampled waveform