Precautions: 1. Choose an appropriate wattage to extend power supply life. Select a power supply with an output power 30% higher than the appliance's wattage. For example, for an 80-watt appliance, use a 100-watt power supply. 2. Consider load characteristics. If the load is a motor, light bulb, or capacitive load, the current will be high when powered on, so choose an appropriate power supply to avoid overload. If the load is a motor, consider the voltage backflow when the appliance is turned off. 3. Check that the installation is secure and that there is no poor contact between mounting components. Check screws and power board components, and measure the insulation resistance of the casing, input, and output to avoid electric shock. 4.
