eemaestro Posted May 18, 2006 Report Share Posted May 18, 2006 I saw this circuit in the "Miscellaneous Projects" section.I am wondering what is the purpose of the 555 timer IC?Is it the same idea as using an IC to debounce the input of a mechanical switch? Or is it something else? Quote Link to comment Share on other sites More sharing options...
allvol Posted May 18, 2006 Report Share Posted May 18, 2006 It would be wonderful if we could see the circuit, also. Quote Link to comment Share on other sites More sharing options...
prateeksikka Posted May 18, 2006 Report Share Posted May 18, 2006 well 555 has an innumberable applications Quote Link to comment Share on other sites More sharing options...
gogo2520 Posted May 19, 2006 Report Share Posted May 19, 2006 Hello eemaestro A 555 is use in a lot of ways, if there is a switch involed the 555 could used as a timmer or pwm for a motor. Post the Projects So we know what your looking at. have fun gogo Quote Link to comment Share on other sites More sharing options...
eemaestro Posted May 19, 2006 Author Report Share Posted May 19, 2006 Here's a link to the circuit I was looking at:http://www.electronics-lab.com/projects/misc/017/index.html Quote Link to comment Share on other sites More sharing options...
allvol Posted May 19, 2006 Report Share Posted May 19, 2006 Hi eemaestro,Thanks for linking to the schematic. Quote Link to comment Share on other sites More sharing options...
eemaestro Posted May 25, 2006 Author Report Share Posted May 25, 2006 You've explained that when pin2 goes LOW (a diode drop above ground) when the light to the phototransistor is blocked, the output goes HIGH.I was just wondering if the IC's purpose was to "debounce" the sensor output, i.e., remove transient fluctuations in voltage level. Now I understand that that is indeed the case.Thank you for your explaining it to me. Quote Link to comment Share on other sites More sharing options...
allvol Posted May 25, 2006 Report Share Posted May 25, 2006 Hi again, eemaestroRight! Quote Link to comment Share on other sites More sharing options...
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