Homemade USB interface powered mobile phone battery charger circuit diagram
Source: InternetPublisher:通通 Keywords: Power supply mobile phone battery battery charger USB interface Updated: 2020/06/22
The charging current of this circuit has two levels to choose from: 100mA (when switch SB is open in the picture) and 500mA (when switch S is closed in the picture). When pin 1 of the MAX1811 allowed by the circuit is connected as shown in the figure, the maximum charging voltage is 4.2V; when pin 1 is connected to the negative terminal of the power supply, the maximum charging voltage is 4.1V. Once the maximum charging voltage is reached, the charging current decreases sharply and the maximum charging voltage remains unchanged. In the figure, VD1 is used as the power indicator, and VD2 is used as the charging indicator. The light is on to indicate charging, and the light is off to indicate the end of charging.
- Basic characteristics of power field effect tubes, how to improve the dynamic performance of power MOSFET
- Schematic diagram of car cigarette lighter to USB power port
- Basic circuit description of adjustable voltage regulator LM317
- Use pulse width modulation to get a precise output voltage
- Simple and practical LED lamp driving circuit
- Detailed explanation of 5v charger circuit diagram
- Low cost and high performance LED constant current power supply
- Using CW34603 to form a circuit to change the polarity of the output power supply
- LM317T voltage regulation adjustable circuit diagram explanation
- Detailed explanation of mobile phone charger circuit diagram
- Current type anti-tamper circuit
- Single-ended input circuit (5V power supply)
- Wiring e when leakage protector supplies power to single-phase load in TN system
- Wiring c when the leakage protector supplies power to single-phase loads in the TN system
- Incandescent lamp life extension circuit 6
- New alarm circuit for toys
- Several drive circuits for micro DC motors powered by 3V
- Timing AC power supply circuit diagram that supplies power for 0-1 hour
- Homemade USB interface powered mobile phone battery charger circuit diagram
- Single-phase power quantitative power supply circuit
京公网安备 11010802033920号