Cheap Dual Voltage Regulator

Here is the schematic design to create a dual voltage regulator to power our Arduinos and other small circuits.

Components Required

  • AMS1117-5.0 or LMS1117-5.0
  • AMS1117-3.3 or LMS1117-3.3
  • Capacitor 47µF
  • Capacitor 22µF - 2 nos.
  • 1N5817 or any general purpose diode like 1N4001, 1N4002, 1N4003, etc would suffice
  • Resistor 1KΩ
  • LED

The resistor and LED are optional and are just to indicate the circuit is connected to power source.

Specifications

This would be capable of delivering up to 800mA current each output voltage port.

Schematic

5v and 3.3v dual voltage regulator schematic
5v and 3.3v dual voltage regulator schematic

PCB Layout

Here is PCB I designed.

5v and 3.3v dual voltage regulator PCB
5v and 3.3v dual voltage regulator PCB