Recent content by taiebeh_mostajabi

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    Electronic Stethoscope 2

    I am sure that my microphone is biass in this circuit,beaucuse befure this circuit,I test Electronic stethoscope circuit , I could hear my sounds in 8 ohms speaker,but there were so much noise that I couldn t hear heartsounds . after that I test electronic stethoscope 2 , I couldn t  hear my...
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    Electronic Stethoscope 2

    Hello I couldent hear heartsounds,I think that the problem is the mic that I used, I used very ordinary capacitor microphon but a small one beaucase I put it to the sleeve rabber of stethoscope, I want to ask what is the electret mic exactly (in electronic stethoscope 2)?
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