kalifed
Junior Member level 3
Hello everyone,
I need to high-pass filter a signal before feeding it to an ADC.
Properties of the signal:
- Frequencies in the 1-100Hz range. I am mostly interested in the 1-50Hz range.
- Low ampltude (a few 1-10mV).
- Always positive.
I was considering a 20uF capacitor in order to filter the frequencies < 1Hz.
What kind of capacitor would you recommend to use?
20uF is not that big and well in the range of the ceramic capacitor. It is also smaller, cheaper and has a longer life. Is there any reason to consider the electrolytic?
I need to high-pass filter a signal before feeding it to an ADC.
Properties of the signal:
- Frequencies in the 1-100Hz range. I am mostly interested in the 1-50Hz range.
- Low ampltude (a few 1-10mV).
- Always positive.
I was considering a 20uF capacitor in order to filter the frequencies < 1Hz.
What kind of capacitor would you recommend to use?
20uF is not that big and well in the range of the ceramic capacitor. It is also smaller, cheaper and has a longer life. Is there any reason to consider the electrolytic?