The_YongGrand Posted December 16, 2009 Report Share Posted December 16, 2009 Hey there,I'm building an electronic circuit which contains a 7805 voltage regulator, rated at 1A output.However, my AC Adapter has a rating of 1.5A output which will be connecting to the input of the 7805. Could that burn the regulator, or the circuit? ::) Quote Link to comment Share on other sites More sharing options...
Hero999 Posted December 16, 2009 Report Share Posted December 16, 2009 Sorry but if you need to ask this then you probably need to do some more learning before you build your own regulator circuit.I suggest doing a bit more research. Quote Link to comment Share on other sites More sharing options...
audioguru Posted December 16, 2009 Report Share Posted December 16, 2009 The battery in my car can supply up to 750 Amps to the starter motor when it is very cold. But the 7805 regulator that is my cell phone charger doesn't care. The 750A battery is connected directly to the input of the 7805.The interior light in my car is also connected directly to the 750A battery when it is turned on. It doesn't draw 750A!My home has electrical power up to 200A.My night light is connected directly to it but it doesn't draw 200A!Why would a 1A regulator draw more than only 1A?Actually it might. Its typical max output (and input) current is 2.2A. Quote Link to comment Share on other sites More sharing options...
Alex Tsekenis Posted December 17, 2009 Report Share Posted December 17, 2009 I assume you can learn the thory somewhere else, so to summarise what has been said, no you will not burn your regulator because your trafo is 1.5A rated, assuming your circuit uses less than 1.5A. Quote Link to comment Share on other sites More sharing options...
Hero999 Posted December 17, 2009 Report Share Posted December 17, 2009 I'd recommend using a 1.5A transformer in a 1A regulator circuit.The next question will probably be: "I've built the circuit using a 6VAC adaptor but the output voltage drops when a 1A load is connected. What's wrong?" Quote Link to comment Share on other sites More sharing options...
Alex Tsekenis Posted December 17, 2009 Report Share Posted December 17, 2009 The next question will probably be: "I've built the circuit using a 6VAC adaptor but the output voltage drops when a 1A load is connected. What's wrong?" Keep your patience Hero. ;D Quote Link to comment Share on other sites More sharing options...
eduard0476 Posted January 19, 2010 Report Share Posted January 19, 2010 don't worri Bro that is not burning. do it... Quote Link to comment Share on other sites More sharing options...
Stephenah Posted April 20, 2010 Report Share Posted April 20, 2010 don't worri Bro that is not burning. do it...+1 :D Quote Link to comment Share on other sites More sharing options...
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