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how to calculate the efficiency of the SMPS ?

FOR EXAMPLE :-

input voltage is  48 volts and the SMPS used is 10 watts and the output voltage is 5Volts with the current combustion of 1.7 amps 

INPUT VOLTAGE = 48VOLTS

INPUT POWER IS = 10 WATTS 

OUTPUT VOLTAEG IS = 5 VOLTS

OUTPUT CURRENT IS = 1.7 AMPS 

To calculate the efficiency of the SMPS (Switched-Mode Power Supply) in this scenario:


1. **Input Power (Pin)**: 

   Input Power (Pin) = Input Voltage × Input Current

   Pin = 48 volts × (10 watts / 48 volts) = 10 watts


2. **Output Power (Pout)**:

   Output Power (Pout) = Output Voltage × Output Current

   Pout = 5 volts × 1.7 amps = 8.5 watts


3. **Efficiency (η)**:

   Efficiency (η) = (Output Power / Input Power) × 100%

   Efficiency (η) = (Pout / Pin) × 100%

   Efficiency (η) = (8.5 watts / 10 watts) × 100% = 85%


So, the efficiency of the SMPS in this case would be 85%. This indicates that 85% of the input power is effectively delivered to the output.

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