Why are all high pass filters band pass filters and how do you calculate the corresponding Q and the -3dB point for the pper frequency limit.
Also if you are troubleshooting an active filter what is the best indication that F_o is a compnent fault
2007-03-02 03:39:21 · 3 answers · asked by Martin W 1 in Science & Mathematics ➔ Engineering
I don't see how you can make the first statement.A bandpass filter has both a low and high frequency cutoff. The high pass will only have a low end cutoff. Attached is an article on the Q factor and I do not understand your last question.
2007-03-02 03:50:48 · answer #1 · answered by Gene 7 · 0⤊ 0⤋
Since the HP filter is made of *something* -- its not a vacuum -- there must be some upper limit. It might be about 10^43 Hz, but its got to somewhere before infinite frequency.
Even a vacuum might have a hard time at the Planck frequency.
2007-03-02 04:09:30 · answer #2 · answered by morningfoxnorth 6 · 0⤊ 0⤋
High pass is also bandpass because you don't want to pass *everything* above the frequency you have selected. There will be an upper limit too.
2007-03-02 03:54:22 · answer #3 · answered by joemammysbigguns 4 · 0⤊ 0⤋