Just a little confused..
Circuit - http://i46.tinypic.com/23rpvyr.jpg
3Db cutoff points - http://i48.tinypic.com/sdephh.jpg
Voltage Gain - http://i47.tinypic.com/9aq0i8.jpg
This is supposed to be a high pass filter, and according to the question we should set this from 1hz to 30Khz. But when upping the scale to lets say 900Khz it becomes a bandpass filter. Now I dont know if this was meant to be up until 300Khz(typo???).
We need to get the lower cut off freq which is roughly 295Hz. Now am I to take the upper cutoff freq as infinity(as in ideal conditions for high pass filters) or use the higher 300khz scale and use that 3dB value?
Last question is the voltage gain: Practical we say Av(dB)=20log*(Vout/Vin) where I got that above graph.
Can I just use a mid frequency say 10Khz and use that as a value or am I missing something?
Please help , Im very desperate for all marks I can get, even if its just an extra point.
Circuit - http://i46.tinypic.com/23rpvyr.jpg
3Db cutoff points - http://i48.tinypic.com/sdephh.jpg
Voltage Gain - http://i47.tinypic.com/9aq0i8.jpg
This is supposed to be a high pass filter, and according to the question we should set this from 1hz to 30Khz. But when upping the scale to lets say 900Khz it becomes a bandpass filter. Now I dont know if this was meant to be up until 300Khz(typo???).
We need to get the lower cut off freq which is roughly 295Hz. Now am I to take the upper cutoff freq as infinity(as in ideal conditions for high pass filters) or use the higher 300khz scale and use that 3dB value?
Last question is the voltage gain: Practical we say Av(dB)=20log*(Vout/Vin) where I got that above graph.
Can I just use a mid frequency say 10Khz and use that as a value or am I missing something?
Please help , Im very desperate for all marks I can get, even if its just an extra point.
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