Abstract:
In this project, a simple variable voltage regulator is implemented. LM317 is used to regulate the output voltage.
Circuit Diagram
Short Description
The output voltage of LM317 is adjustable as long as it maintains a difference between input voltage and output voltage lower than 40 Volts.
Voltage reference is 1.25 (the band-gap voltage).
Material list
| Sr. No. | Component | Specifications | Quantity | |
| 1 | Transformer | 230V/12V,300mA | 1 | |
| 2 | Diodes | 1N4007 | 4 | |
| 3 | Filter capacitor | 1000mfd/25V | 1 | |
| 4 | LM317 | standard | 1 | |
| 5 | Resistors | 1k2,220 ohm,0.25W | 1 each | |
| 6 | Potentiometer | 1k, 16mm | 1 | |
| 7 | PCB | General Purpose, 4″X4″ | 1 | |
| 8 | Misc | Wires, solder metal | ||
This project is available in the kit form. Contact Omkar to buy it. This site has no commercial connection with his activities.
