How to design a 5V 2A SMPS Power Supply Circuit Power Supply Unit (PSU) is a vital part in any electronic product design. Most household electronic products like Mobile Chargers, Bluetooth Speakers, Power Banks, Smart Watches etc requires a Power Supply circuit that could convert the AC mains supply to 5V DC to operate them. In this project we will build a similar AC to DC power supply circuit with 10W power rating. Design 5V DC Power Supply [Easy Step By Step Guide] The design of 5V DC power supply. The design of any circuit begins with a well made general block diagram. It helps us to design the sections of the circuit individually and then at the end put them together to have a complete circuit, ready for use. 100+ Power supply circuit diagram with PCB - ElecCircuit You are looking for many power supply circuit diagram, right? Because the various electronic projects need to use them as an energy source. There are a lot of circuits in categories: Power supply & Charger. But sometimes you may want to save time and get some ideas. 5V - 2A Regulator : 3 Steps - Instructables 5V - 2A Regulator : This is a regulator circuit using LM78S05 IC. it is a 5v regulator IC with 2A current output . this circuit is very useful for those who need more current output . this is an easy circuit and consists of very few components. +5V and -5V Dual Power Supply Circuit The Converted -5V supply is available at pin 5 of U1. Thus the dual power 5V supply is available at the connector J2. We have simulated the circuit in Proteus before building it on hardware: Testing Dual (±) 5V USB Power Supply Circuit: Assemble the circuit on the PCB/breadboard as per the circuit diagram shown above. Steps to Convert the 230v to 5v DC to Powerup the Circuits There are different types of power supply circuits based on the power they are used to provide for devices. For example, the micro-controller based circuits, usually the 5V DC regulated power supply circuits, are used, which can be designed using different techniques for converting the available 230V AC power to 5V DC power.