Remember we have half-wave and full-wave rectifiers, but our circuit design interest is in full-wave rectifiers.Rectifier circuits exist as integrated circuit packages, but you can design your full-wave rectifier using four diodes.
To convert the voltage to DC, the rectifier circuit is employed in converting the AC to DC, and without it becomes very impossible to have our 5V DC output. The transformer stepped-down voltage remains to be AC. In our circuit, we shall be employing a step-down transformer so that depending on your country we can lower the input voltage from 220V to something closer to 5V which is our project requirement. Transformers have the function of stepping up or stepping down the circuit voltages and this is guided by the energy conservation law. Let us have a look at the block diagram and what each element in the block diagram does before doing the actual design.įigure 1: Power Supply General Block DiagramĮach section of the block diagram has a specific function and we have to go deeper into that so that we can know why the sections exist. In general, the block diagram of a power supply is made up of Let us start with the complete design guide.
The main objective of this article is to share know-how and ensure that at the end of the project tutorial, you have enough lessons to allow you the ability to design your power supply according to your specifications and requirements. We will design the power supply and carry out and explain how to do various calculations including all the necessary steps. Here we are going to focus on designing a 5V power supply.