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.
Cheap 220V AC mobile charger circuit diagram
First of all, lets have a look at the charger’s circuit diagram. As transformer is a bit odd, so I’ve also decided to draw it by hands.
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.
Part list of the mobile charger circuit
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.
- Primary: Around 250 turns of 36 to 40 SWG enamelled copper wire.
- Secondary: 6 turns of 26 to 28 SWG enamelled copper wire.
- Feedback: 8 to 15 turns of 36 to 40 SWG copper wire.
If the transformer is broken, you can use the transformer from other broken charger of similar type.