kentlee Posted June 14, 2006 Report Share Posted June 14, 2006 Can soem one help me??I need the rectifier circuit which can made the LED voltmeter to measure the AC 200 voltage. Quote Link to comment Share on other sites More sharing options...
MP Posted June 20, 2006 Report Share Posted June 20, 2006 Are you building this one?http://www.electronics-lab.com/projects/test/007/index.htmlYou just need to rectify the input with diodes just like you would with any circuit. Just diodes and a cap for ripple. Then adjust the pot so that it reads correctly.MP Quote Link to comment Share on other sites More sharing options...
tushar_89 Posted September 29, 2006 Report Share Posted September 29, 2006 What value of a Cap would suit the rectifier circuit for measuring a voltage of approx 250 - 300 Volts AC. Quote Link to comment Share on other sites More sharing options...
MP Posted September 30, 2006 Report Share Posted September 30, 2006 There is another thread in this section (Projects Q/A) that is much longer. Some members did not want to go through that long thread and started this one. Unfortunately, some of the same questions are being asked here. I highly recommend that you read through the pages of the other thread. There you will find discussions of laying out the voltmeter and also comments about making it work with AC voltage.MP Quote Link to comment Share on other sites More sharing options...
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