1. Low Cost Universal Test Equipment Survey on Power supplies

2. Agilent U8001A  Output Voltage : 0-30V  Output Current : 0-3A  Cost :20,442 /-

3. Tektronix PWS2323  Output Voltage : 0-32V  Output Current : 0-3A  Cost :401$

4. Xp Power ECS45US15  Output Voltage : 15V  Output Current : 3A  Cost : 3019/-

5. Operation of SMPS

6. Topologies of SMPS  Isolated - Transformer  Non Isolated – Buck Converter.  Buck Converter - The buck converter reduces the input voltage in direct proportion to the ratio of conductive time to the total switching period, called the duty cycle.  Power Factor Correction

7. Elektron India Power Supply

8. Uni lab Power Supply

9. LM2596 Switching Regulator

10. LM2596 Features

11. Cost of Components  LM2596 (Buck converter)-1.80$  uA78M33 (Voltage Regulator)-0.27$  LM324(Low Power Quad Op Amp)-0.05$

12. Micro Chip Intelligent Power Supply

13. Capacitor AC-DC Converter