Power supplies are essential components in electronic devices, providing the necessary electrical energy for their operation. There are two main types of power supplies: linear and switch mode.Linear power supplies are known for their simplicity and reliability. They use a transformer to step down the voltage from the main supply, followed by a rectifier to convert the AC voltage to DC. The DC voltage is then regulated using a linear regulator. Linear power supplies are characterized by their low noise and ripple, making them suitable for applications that require clean and stable power. However, they are less efficient compared to switch-mode power supplies.