How can LED light band match the appropriate LED linear switching power supply?

Matching principle of LED lamp and LED linear switching power supply:

1. Voltage Compatibility: The standard voltage of LED light strips must match the output voltage of the switching power supply. If the output voltage of the power supply is below the light strip's required threshold, the LED may fail to illuminate properly or produce insufficient brightness. For example, a standard 12V LED light strip connected to a 9V linear power supply will experience noticeable dimming and potentially shortened lifespan of the LEDs. Conversely, if the power supply's output voltage exceeds the light strip's specifications, it may damage the LED. Excessive voltage can cause the current passing through the LEDs to surpass their rated capacity, leading to bulb failure.

2. Current Matching: The output current of an LED linear switch-mode power supply must exceed the rated current of the LED strip. This rating is calculated using the power and voltage specifications. For example, a 60W LED strip operating at 12V has a rated current of 5A (60W / 12V). If the power supply's output current falls below this threshold, the strip may experience flickering or uneven brightness. Prolonged operation under such conditions can significantly reduce the lifespan of both components. Consider a 5A-rated LED strip connected to a 3A power supply: this mismatch could cause flickering and lead to overheating damage in the power supply due to overload.

3. Power Matching: The output power of an LED linear switch-mode power supply must meet the power requirements of the LED light strip. This can be determined by calculating the product of the power supply's output voltage and current. For example, a 12V,5A power supply delivers 60W of output power. If the LED light strip requires more than 60W, this power supply cannot satisfy its needs. Additionally, to ensure sufficient margin and prevent prolonged overloading, it is generally recommended that the power supply's capacity be slightly higher than the light strip's actual power requirement. For instance, a 50W LED light strip would typically require a 60W to 70W linear switch-mode power supply.