nuttaphong191 Posted April 17, 2007 Report Share Posted April 17, 2007 hi there , i need to convert a 15v dc to a 15v ac 50 hz, is this possible for a beginer like me? i herd you can do this based on a 555 astable Quote Link to comment Share on other sites More sharing options...
audioguru Posted April 18, 2007 Report Share Posted April 18, 2007 If an ordinary 555 has a 15V supply, as an oscillator its output goes up to only about 13.8V and down almost to 0V. So the output is not 15VAC.A Cmos 555 like an LMC555, TLC555 or ICL7555 has an absolute max supply voltage of 15V and its output will swing up to exactly 15V and down to 0V if it has a very high load resistance.The outputs of a 555 and a Cmos 555 are square-waves. Quote Link to comment Share on other sites More sharing options...
LostViking Posted May 22, 2007 Report Share Posted May 22, 2007 Yes the 555 has a squareware output. But you can integrate this over a cap and get a psuedo signwave. Use that to drive a descrete transistor switching the DC. You will have to play with it, but it's doable. Quote Link to comment Share on other sites More sharing options...
ante Posted May 23, 2007 Report Share Posted May 23, 2007 It should work if the power requirement is low and the frequency stability isn Quote Link to comment Share on other sites More sharing options...
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