no not a college assignment , i just like to know what is the role of those elementshi,
Have you calculated the RC cut off frequency as being 100kHz
Also note the output of the Amp is at Vsup/2 , so what do you think the role of C1 is.?
Is this a college assignment.?
The output of the amp, with no sound coming thru, will be at half the battery voltage, so without the C1, there would be a DC current flowing into the speaker coil which would damage the speaker .
The R and C, filter out any high frequency 'hiss' on the output of the amp.
Do you follow OK.?
At higher frequencies the Impedance of the filter cap is low.
ie: the Equation is Zc = 1/ ( 2 * pi * F * C)
Ummm ... no. There is no perceivable hiss at 160 kHz and above.The R and C, filter out any high frequency 'hiss' on the output of the amp.
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by Robert Keim