1. Power Supply Design

2. The Big Picture 220 Volts AC 1.5-9V Battries 9-12V Power Adapter 5V Usable DC Supply ?

3. Supply from 220V AC outlets Transformer 220V AC 9-12V AC 9-12V DC

4. Power Adapters

5. DC-DC Converters Types of Converters – Step Down, Buck Converters – Step Up, Boost Converters Converter Technology – Linear Regulators - simple – Switching Regulators – more efficient

6. Step down Linear Regulators TO-92TO-220SOT

7. Step down switching regulator TO-220 TO-263 SOIC

8. Step-up Regulators - Usually has low output current