Mobile phone charger power conversion circuit

When making, be sure to pay attention to the polarity of the electrolytic capacitor, do not connect it reversely, and pay attention to the same name terminal of the switching transformer. The switching transformer uses EE16 core, and FR93 can be replaced by IN5819. During debugging, the 10 ohm resistor can be replaced by a 60W light bulb. After confirming that the temperature rises slowly when 13001 is working, the light bulb can be replaced by a resistor. The power of the resistor should be larger, otherwise it will be easily damaged. The 510K resistor power is also larger, it is best to use a resistor above 1W.