Here is the parameter introduction of the MEAN WELL PS - 45 - 12 45W single - output switching power supply:
Input Characteristics
Input Voltage Range: It accepts a universal AC input voltage in the range of 90 - 264VAC8. It can also work with an input frequency of 47 - 440Hz8.
Max Input Current: The maximum input current is 800mA2.
Leakage Current: The leakage current is less than 0.75mA.
Output Characteristics
Rated Output Voltage: The output voltage is 12VDC, with a voltage tolerance of ±2.0%8. The voltage adjustment range is 11.4 - 13.2V.
Rated Output Current: The rated output current is 3.7A, and the current range is 0 - 4.4A2.
Rated Output Power: The rated output power is 44.4W2.
Ripple and Noise: The ripple and noise level is 100mVp - p at most8.
Output Regulation: The line regulation is ±1.0%, and the load regulation is ±2.0%8.
Protection Functions6
Over - Voltage Protection: It can protect against over - voltages. If the output voltage exceeds a certain range, the protection mechanism will be triggered to prevent damage to the connected devices.
Overload Protection: It can handle overloads within a certain range and automatically recovers once the overload condition is removed.
Short - Circuit Protection: It can automatically detect and protect against short - circuits at the output.
Efficiency2
The efficiency is 76%, which helps to reduce energy consumption and heat generation.
Cooling Method10
It adopts free air convection cooling, which means it operates silently without the need for a cooling fan.
Operating Temperature Range2
The power supply can operate in a temperature range of - 10°C to 60°C.
Dimensions2
The dimensions are 127mm×76mm×27.94mm (L×W×H), which is relatively compact and easy to install in various devices and equipment.
Certifications8
The power supply has certifications such as UL / CUL / TUV / CE, which indicates that it meets relevant international safety and EMC standards. It also comes with a 2 - year warranty.