Hello Everybody, i need some help.
I am working with an inverter prototype which generates a waveform as indicated with red color on file attached. I need to supply the rectified output of this waveform in a low voltage level (2 Volts) to the A/D conversor input of a PIC processor. Due to the switching behaviour of the inverter system, there is a lot of noise (Spikes) involved in the low voltage signal to the A/D input.
Even with this type of feedback noisy signal the system works, but i need to remove as much as possible the noise. I was thinking about using an active fourth order Low Pass anti-aliasing filter, but it makes a phase shifting to the signal that the system can not allow.
The question is: How can i remove the noise from the Blue Signal without phase shifting the signal ?
I appreciate any suggestions.
I am working with an inverter prototype which generates a waveform as indicated with red color on file attached. I need to supply the rectified output of this waveform in a low voltage level (2 Volts) to the A/D conversor input of a PIC processor. Due to the switching behaviour of the inverter system, there is a lot of noise (Spikes) involved in the low voltage signal to the A/D input.
Even with this type of feedback noisy signal the system works, but i need to remove as much as possible the noise. I was thinking about using an active fourth order Low Pass anti-aliasing filter, but it makes a phase shifting to the signal that the system can not allow.
The question is: How can i remove the noise from the Blue Signal without phase shifting the signal ?
I appreciate any suggestions.