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Low pass filter

Jantz

Dec 29, 2017
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If i had a sawtooth function of 1KHz and peak amplitude of 10 volts, at what frequency will this signal pass through a low pass filter with 3.5kHz?
 

Harald Kapp

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Nov 17, 2011
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At any frequency - with varying degrees of distortion. You do the math.
 

Audioguru

Sep 24, 2016
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You forgot to say any details about the lowpass filter. A simple single order RC? Then it cuts the harmonics gradually.
If its cutoff frequency is 3.5kHz then it noticeably cuts 3.5k/5= 700Hz and higher.
 

Jantz

Dec 29, 2017
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You forgot to say any details about the lowpass filter. A simple single order RC? Then it cuts the harmonics gradually.
If its cutoff frequency is 3.5kHz then it noticeably cuts 3.5k/5= 700Hz and higher.
That's everything i had for the question. When its need to be divided by 5?
 

Audioguru

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Look at a graph in Google of the frequency response of a simple single-order RC lowpass filter. It begins dropping at 1/5th of the -3dB cutoff frequency.
 

Jantz

Dec 29, 2017
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Look at a graph in Google of the frequency response of a simple single-order RC lowpass filter. It begins dropping at 1/5th of the -3dB cutoff frequency.
I see....And ya the cutoff frequency is 3.5khz sorry i didn't notice it...Thanks btw can i pm u?
 

Audioguru

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I do not want a PM, please ask questions in the forum so anybody can answer them.
 
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