Well, its not so simple for me actually. Thats the project I have chosen for this semester. The most basic circuit I have found on Internet is this:
Please tell me what does BC547 doing here and what is its alternative? and please do tell me more about that electret microphone. Thanks
The BC547 is a sinple small signal transistor. A NTE123AP is equivalant.
The electret mic requires a battery potential to make it work. It has an internal fet buffer inside which acts more like a current amplifier. Most small capsules will work.
greg
internal fet
will work.
The URL gives a good explanation of the circuit too. Interesting little bug....
- Tim -
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