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Switch mode power supply
1.
2. SWITCHING DC POWER SUPPLIES
INTRODUCTION
LINEAR POWER SUPPLY
OVERVIEW OF SWITCHING POWER SUPPLIES
DC – DC CONVERTER WITH ELECTRICAL
ISOLATION
CONTROL OF SMPS
POWER SUPPLY PROTECTION
APPLICATION
3. Introduction
Like a linear power supply, the SMPS too converts
unregulated ac or dc input voltage to a regulated dc
output voltage
The input voltage is first rectified and filtered using a
capacitor at the rectifier output
unregulated dc voltage across the capacitor is then
fed to a high frequency dc-to-dc converter
The high frequency transformer used in a SMPS
18. Conclusion
One of the most important applications of power
electronics is SMPS
High efficiency and small weight and size
In SMPS multiple outputs are possible
Losses is minimum and only switching losses are
present
Current rating is medium
The high frequency transformer used in a SMPS