The market is flooded with cheap mobile charger circuit. Some of you may be looking for this type of charger circuit diagram and components list.These mobile chargers uses only few parts, very simple design. But there's a drawback too, they got damaged easily.Some of my friends keeps asking how to repair mobile charger circuit, so I've decided to do a little reverse engineering of those chargers.
Unfortunately every charger circuit is not same, some of them contains few extra capacitors or resistors.But even though, you can get a clear overview of the mobile charger circuit from the above diagram.The design is quite straight forward, built on a paper phenolic PCB, could be easily repaired.
Finally the part list, you can replace most of them by their closest alternative.
Q1 - 13001 transistor
D1 - 1N4007 diode
D2 - 6.2V Zener diode
D3 - 1N4148 diode
D4 - SB260 schottky diode
R1 - 6.8 Ohm - 1/2 watt
R2 - 1 MOhm - 1/4 watt
R3 - 6.8 kOhm - 1/8 watt
R4 - 330 Ohm -1/4 watt
C1 - 2.2uF - 450V
C2 - 4.77uF - 50V
C3- 680pF ceramic (681)
C4 - 470uF - 10V
As I've said before, this type of 13001 transistor charger circuit may vary in design and part number. But the basic circuit is same, few of them have a little LED as indicator.