I have to use a LM384 amp circuit (shown below) for a school project and need to explain how it works.
I've read the datasheet (http://www.ti.com/lit/ds/symlink/lm384.pdf) and thus have a guess about some components but others remain a mystery.
- Vin potentiometer is only a voltage divider to adjust input voltage
- .1uF capacitor (above) is a decoupling capacitor to avoid noise in the power supply
- 5uF capacitor has the same purpose
- RC branch + 500uF capacitor : That is the question. I don't really get the purpose of this.
Is the 500uF capacitor combined with 8 Ohm load just making a high pass filter with a cutting frequency of 1/(2*piRC) = 40 Hz ? Then what would be the point of this parallel RC branch?
Any help appreciated, thanks a lot!