Phân tích mạch vợt muỗi,các hư hỏng hay gặp!

Hello everyone, I have just finished repairing a new mosquito repellent And this mosquito repellent is very new, the customer has just bought it and it has the fault that it does not kill mosquitoes, which means it is very small and beautiful After I finished repairing it, I drew its electrical circuit to analyze If you want to refer to the principle of operation of this mosquito repellent As well as the damage that mosquitoes often encounter in this mosquito repellent, you can refer to this video So here is its circuit, I drew it First of all, I will talk about its charging circuit The AC220 power supply goes through the plug to charge the mosquito repellent It will go through a 1m resistor, this one is very large, up to 220K It will light up this LED, the LED will tell us that it is charging This is the LED that tells the mosquito repellent to charge Next, it will go through a 1.5mm resistor, or if the battery is small, it will go through a 1.5mm resistor And a 560mah battery, the purpose of this battery is to discharge the mosquito repellent to be safe So this mosquito repellent still runs Next, it will go through the 4 main diodes, this is the 1.5mm resistor, this is the battery, and these are the 4 diodes It will go from AC220 to DC, and I always say that this DC source is very large, up to 300V But because it is a 1.5mm resistor, it will be directed to an AC220, which is about 4.2V The next half of the circuit is below, it is a diode, above it is a mosquito repellent, the current goes through the mosquito repellent, through the D2, to the mosquito repellent, to the mosquito repellent, to the mat, and through the D4 The next half of the circuit is below, it is a diode, above it is a mosquito repellent, through the D4, to the mosquito repellent, to the mosquito repellent, through the D5, to the mosquito repellent, through the D6, to the mosquito repellent The next half of the circuit is below, it is a diode, above it is a mosquito repellent, through the D5, to the mosquito repellent, through the D6, to the mosquito repellent The next half of the circuit is below, it is a diode, above it is a mosquito repellent, through the D5, to the mosquito repellent, through the D6, to the mosquito repellent, through the D7, to the mosquito repellent The next half of the circuit is below, it is a diode, above it is a mosquito repellent, through the D5, to the mosquito repellent, through the D6, to the mosquito repellent The next half of the circuit is below, it is a diode, above it is a mosquito repellent, through the D7, to the mosquito repellent, through the D8, to the mosquito repellent The next half of the circuit is below, it is a diode, above it is a mosquito repellent, through the D9, to the mosquito repellent, through the D10, to the mosquito repellent The next half of the circuit is below, it is a diode, above it is a mosquito repellent, through the D11, to the mosquito repellent, through the D12, to the mosquito repellent The next half of the circuit is below, it is a diode, above it is a mosquito repellent, through the D12, to the mosquito repellent The next half of the circuit is below, it is a diode, above it is a mosquito repellent, through the D11, to the mosquito repellent, through the D12, to the mosquito repellent The next half of the circuit is below, it is a diode, above it is a mosquito repellent, through the D11, to the mosquito repellent The D882 circuit has a negative voltage, so the D882 circuit will be locked. Thank you for watching