Was looking around for a low-voltage headamp circuit I could build, which I could power with the USB battery pack I already carry around (an XtremeMac InCharge Portable) when I came across this TDA1308 circuit :
(original source : http://www.dz3w.com/diycn/music/1119.html)
From what I can gather from the Google Transla-tion, this is powered by two 3.6V lithium batteries, but I had a few questions, and was wondering if someone could help with, such as :
a) Is JK3 a charging/mains power jack?
b) What is the purpose of the row of capacitors (C2, C3, C4, C5, C6)? I think the translation says it is a "RC damper network", but I'm not sure what it does.
c) Is there a virtual ground circuit? I can't tell...
Thanks in advance for an help