Hello!
Is there anyway I could discriminate a 0 Hz signal from a 1 Hz signal? I was thinking of a dc blocking capacitor but I think the capacitor values will be too large. Any suggestions? I could really use some help. Thanks!
A simple RC filter will do this, remember if you place a zero at 0 Hz and a pole at 1 Hz you have infinite decades of distance between the two (logarithmic scale) and a single pole filter will slope at 20 db per decade.
To have a pole at 1 Hz is not unheard of for a simple RC filter:
w = 1/rc = 2*pi*f
For example c = 10uF and r = 16k will make a practical, simple filter.
reyge,
A commutating filter behaves as a bandpass filter. Depending on the number of stages, it can achieve extremely high Q's. This might work for your application.
Regards.
Kral