This is 12v to 5v converter step down as 3A Regulator, Learn More Now!
More about 5 volts DC power supplies
If you are looking for 5-volts DC regulator without transformer. This circuit may help you. It is suitable for low current digital. Use the MOSFET is based.
First choice of Fixed Regulator using family IC-78xx. It is easy to use, cheap, popular for a long time.
This is LM317 Low dropout regulator 5V 2A using TIP41, The voltage input is 5.1V DC is converted into 5V output,while maximum output current to 2A by TIP41 [...]
Here is circuit switching regulator 5V 5A for digital circuit. Use IC LM2678-5.0 is High Efficiency 5V 5A Step-Down Voltage Regulator This is good power supply, small size and do not hot.
This is microprocessor power supply circuit, 5V 3A by LM323K, for use in experiments such as logic circuit and/or Microprocessor types that use voltage 5V