Greetings! I’m working on a project and am having difficulties choosing the right components to get the output I need.
I have a YHDC brand SCT013 5A/1V class:1 current transformer and will be using it to measure the current of a 120 V AC line at 60Hz and feeding the output voltage to a microcontroller. The microcontroller only receives positive inputs up to 3.3V. My teammate who is handling the code wants the signal input into the microcontroller to have a range of 1.65Vpp centered at 1.65V so we can measure both the positive and negative magnitudes of the signal. He also wants the input signal to be an AC voltage and will be reading it using an analog input pin.
In order to accomplish this, my current understanding is that I need to take the 1V AC output of the current transformer and apply both a 1V DC offset and a 1.65 V/V gain to the CT output (assuming this gain will apply to both the AC voltage and the 1V DC offset).
Since our project is to construct a power meter we want to have as many data points as possible for our current measurements. We also want to filter out any noise from our microcontroller input signal. We also will need the device to only require 5V maximum for its input but if that isn’t feasible we can try to figure something out.
Does anyone have a component recommendation for us to meet all of these parameters? We will be needing 4 of these so low cost options are ideal, but we are open to $10-$20 price ranges (per unit).
Parameters for needed component:
Signal Input: 0V-1V AC 60Hz
Signal Output: 0Vpp-1.65Vpp with a 1.65V DC offset
Device input: 0V-5V
This is my first forum post so I apologize if it’s hard to find information or long winded. Thank you so much for taking the time to read this, and any assistance is appreciated.