shaiqbashir Posted December 18, 2005 Report Share Posted December 18, 2005 Hi Guys!How are you?well! im trying to make the following project:http://www.electronics-lab.com/projects/pc/023/index.htmlNow the problem is that following parts are not available in my areas:400MHz resonator200MHz resonatorremember that the author of this circuit has advised me that you can use a resonator for producing this frequency. Now the problem is this that in my market, such large resonators are not available. Please tell me some alternative, so that i can make this project. Secondly, do anyone think that this project has any faults in it? If yes then please point out them to me.Thanks in advance Good Bye! Quote Link to comment Share on other sites More sharing options...
russlk Posted January 6, 2006 Report Share Posted January 6, 2006 High frequency crystals are of the overtone type and will not oscillate at the correct frequency in that circuit, if it oscillates at all. Quote Link to comment Share on other sites More sharing options...
audioguru Posted January 6, 2006 Report Share Posted January 6, 2006 Hi Shaiq,The IR receiver seems to have its IR diodes forward-biased and conducting all the time. They are shown upside-down!All IR communication circuits I've seen have the IR diode reverse-biased like this one: Quote Link to comment Share on other sites More sharing options...
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