As already explained in the earlier blog entry EmbeddedInEmbedded: LM317 regulator : 3.3V Power supply for Micro-Cont... the below project is created for hardware implementation.
In this power supply board the 12V DC voltage is converted to 3.3V and 5V separately that can be used for various purposes like supply to development boards, micro controller etc.
The list of components used are listed:
12V to 3.3V Converter:
- Heat Sink (with screw)
- LM317T Regulator (1.2V to 37V Regulator) (LM317 Details)
- Capacitors (10uF, 100uF Electrolytic capacitor)
- Resistance (330 Ohms, 560 Ohms)
12V to 5V Converter:
- Heat Sink (with screw)
- LM317T Regulator (1.2V to 37V Regulator) (LM317 Details)
- Capacitors (10uF, 100uF Electrolytic capacitor)
- Resistance (220 Ohms, 680 Ohms)
Others:
- LEDs (3)
- MX-27 DC Jack
- General purpose PCB board
- Switch (2)
- Berg strips (female) for connections
Schematic 1: 3.3V
Schematic 2: 5V
PCB board with only switches for 2 separate modules.
The input 12V is indicated through a red LED.
The 3.3V module is added on the PCB board.
The 5V module is added on the PCB board.
The rear side of the PCB board.
The 3.3V and 5V modules are active, indicated by 2 green LEDs.
The board functioning is shown in the video attached below.
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