Here is the schematic design to create a dual voltage regulator to power our Arduino and other small circuits. It is built around AMS1117 low drop out voltage regulators.
- 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
The resistor and LED are optional and are just to indicate the circuit is connected to power source.
This would be capable of delivering up to 800mA current each output voltage port.
Here is PCB I designed.