This project details the design of a very low dropout adjustable power supply. A good power supply is essential to electronic projects. While there are many existing designs for adjustable power supplies, this one makes improvements that make it more useful for hobby designs

• MIC2941 regulator has guaranteed 1.25A output
• Low dropout, only 40mV - 400mV compared to 1.25V - 2.0V for LM317. This means you can use a wider range of output voltages including generating 3.3V from as low as 3.7V (such as 3 AA's or a lithium ion battery)!
• Short circuit and overheating protection
• Input diode to protect circuitry from negative voltages or AC power supplies.
• 2.1mm DC jack and terminal connector for voltage inputs
• Two indicator LEDs for high and low voltages
• Output selection switch to select from 3.3v, 5v and Adjustable
• Onboard potentiometer for adjusting voltage from 1.25V up to within 0.5V of the input voltage. (20V max)
• On/Off switch for entire board
• Heat sink included