Most of embedded electronic based systems need a regulated supply of power. Well, this type of power supply is needed to provide a regulated and variable power supply system that automatically stops supply in case no load is detected. This project makes a use of step-down transformer to step down the voltage from 230VAC TO 12VAC and this 12VAC is given input to the rectifier which converts 12V AC to 12V pulsating DC and this pulsating DC we are given input to the capacitor to remove the unwanted pulse and gives the 12VDC output. This 12V DC we are giving to relay module for working. Toggle switch along with BULB connect through relay. Here we are using LED to know the load indication whether load is ON or OFF. If the user switches ON the load using toggle switch, then the bulb will glow automatically along with LED indication. If the user switches OFF the load using toggle switch, then the blub will OFF and also LED will OFF automatically.  

Hardware Specifications

• Transformer
• Relay
• Filter
• Rectifier
• Toggle switch.
• Bulb
• 1N4007 Diodes.
• Resistor

• LED.

 

Block diagram of the project:

video: