|A word on capacitors: Somewhere along the line, I learned that the symbol for a non-polarized capacitor is two straight lines, and a polarized electrolytic gets a straight one and a rounded one, the straight one being +. I adhere to this, although most people don't. I also don't mark + or - next to them. In the schematic above, the flat sides of C3 and C4 are the + sides.
|2N3906 General Purpose PNP
|Generic silicon rectifiers