Guest ca123ner Posted May 16, 2014 Report Share Posted May 16, 2014 hiDesign 5V DC regulated power supply. Assume input voltage of 100 Vpp AC. Use a transformer, a full-wave bridge rectifier and a voltage regulator integrated circuit. You can add LED to the circuit to indicate when the circuit is powered up.I want to power supply.Please could you help me about the calculation and circuit drawings.thank you:) Quote Link to comment Share on other sites More sharing options...
redwire Posted May 16, 2014 Report Share Posted May 16, 2014 what are you powering? What are the output requirements? Quote Link to comment Share on other sites More sharing options...
audioguru Posted May 16, 2014 Report Share Posted May 16, 2014 All the details of your school assignment are missing:1) How much output voltage?2) How much maximum output current?You cannot design a simple power supply without knowing these basic things. Quote Link to comment Share on other sites More sharing options...
Hero999 Posted May 16, 2014 Report Share Posted May 16, 2014 Are you sure it's 100Vpp and not RMS?100Vpp is the same as 35VAC RMS. Most transformers are specified in RMS and it's unlikely you'll be able to find one with a 35V primary as it isn't a standard mains voltage in any country. Quote Link to comment Share on other sites More sharing options...
Guest ca123ner Posted May 16, 2014 Report Share Posted May 16, 2014 hello hero999yes I am sure.I send original one all project this. Quote Link to comment Share on other sites More sharing options...
Guest ca123ner Posted May 16, 2014 Report Share Posted May 16, 2014 hello audioguru1)I need 5 dc for output voltage.2)I will find current after calculation of voltage. Quote Link to comment Share on other sites More sharing options...
Hero999 Posted May 18, 2014 Report Share Posted May 18, 2014 hello audioguru1)I need 5 dc for output voltage.2)I will find current after calculation of voltage.That's not the correct way to design it. You need to calculate the current first, before you can build a power supply. If you build a power supply which doesn't provide enough current, the voltage will fall below 5V and the circuit won't work. If you over engineer the power supply so it can provide a lot more current than you need, you would've wasted your money and it'll take up more space than necessary. Quote Link to comment Share on other sites More sharing options...
Guest ca123ner Posted May 19, 2014 Report Share Posted May 19, 2014 That's not the correct way to design it. You need to calculate the current first, before you can build a power supply. If you build a power supply which doesn't provide enough current, the voltage will fall below 5V and the circuit won't work. If you over engineer the power supply so it can provide a lot more current than you need, you would've wasted your money and it'll take up more space than necessary.I know.but my teacher want to this project from me.I only will draw on paper.I dont know how do it. Quote Link to comment Share on other sites More sharing options...
audioguru Posted May 19, 2014 Report Share Posted May 19, 2014 Will your teacher let you copy the very good but extremely simple 5V voltage regulator circuit shown on the datasheet of a uA7805 voltage regulator integrated circuit? The datasheet shows the circuit and lists its accuracy and its maximum output current. Quote Link to comment Share on other sites More sharing options...
login
Recommended Posts
Join the conversation
You can post now and register later. If you have an account, sign in now to post with your account.