Thanks..
Attached is the schematic of LM386 with a gain of 20 (taken from datasheet).
Lets say if I use that circuit with Vs of 5V, if I connect the output of RC lowpass filter to Vin (Vpk-pk of 4V), won't the output of the audio amplifier be 5V for most of the time because of the gain factor of 20..? I mean, It won't be able to amplify the voltage any further than 5V right..?
Sorry, I don't quite understand.. What is the advantage of using the audio amplifier..?
Another question is what is the purpose of the 10K potentiometer at Vin (in the schematic)..? Is it to bias the Vin so that it is Vs/2..?
Another question is, lets say i use headphone such as **broken link removed**, do I still need the power amp or can I donnect the headphone directly to the output of lowpass filter..?