For this assignment I looked inside an old Duracell AC Phone Charger.
I took the two screws on the side with the prongs out, but was unable to pry open the charger at the seem.
Later, I was able to crack it open with the use of a Flathead and a hammer.
As far as I can tell, this charger contains:
- Wires L and N, which each connect to one of the prongs that plug into the wall.
- D1-4: 1N4007 diodes
- C2: a 400v 4.7uF Electrolytic Capacitor 105 °C
- C1: a 2A103J 100V 0.01uF(10nF) Polyester Film Capacitor
- D5: a FR107 diode
- Q2: a S8050 D331 transistor
- C3: a 223 Ceramic capacitor
- Q2:a S8050 D331 transistor
- Q1: a MJE13003 transistor
- C5:a 104 Ceramic capacitor
- U1: seems to be a B1308 JC817 KENTO phototransitor/photocoupler/optocoupler
- C4: a 400v 470uF Electrolytic Capacitor 105 °C
- LED1: a green LED (to show that power is flowing through the charger when plugged in).
- V+ and V- are power and ground for the charging cord, respectively.
The also seems to be:
- R1-R12: 12 different resistors
- D6 and D8: what looks like orange/black/clear (Zener?) diodes with an AZ on it, but I can’t read the top line, so can’t say for certain.
- T1: wich says D8 X7210CV, but which didn’t bring up any search results when I went looking for it.
- CY1: a blue thermistor with 222 at the top, but I can’t read the bottom line, so can’t say for certain.
- and finally ?: which I belive is another diode, and begins with 1N58…
All and all, there seems to be a lot current and voltage regulation to make sure the phone isn’t fried from being connected to an outlet.