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Urgent help on electret mic amplification

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kalyan_chakri31

New Member
hii

i am working on some project and i want to connect and record the output from electret mic in the osciloscope. the problem i am facing is that when the mic is connected directly to the osciloscope...i cannot see anysort of signal in the osciloscope.
i have tried to make an amplifier using 741 op-amp but was not able to get anything. i am not from electronics background so i hope i didnot made a good circuit.....if i use a mic pre-amp then will the output from this mic pre-amp be sufficient to see a good signal in the osicloscope. are there any readymade kits available onime so that i can buy 1. i've seen one of such kind online but im not sure if that could solve my problem....somebody please guide me correctly ....

ABRA Electronics  :: Educational Kits :: Receivers/Transmitters :: EKI 2045 FM Microphone Transmitter Kit

ABRA Electronics  :: Educational Kits :: Amplifier/Audio :: CK495 Electret Microphone Pre-Amp Kit


the above two links are the kits i am talking about. will these be helpful to me if i replace the mics in these circuits with what i need?
 

audioguru

Well-Known Member
Most Helpful Member
You did not attach the schematic of your 741 opamp preamp so we can't fix it for you.

An electret mic must be powered for it to work.
 

kalyan_chakri31

New Member
i connected the circuit for the mic as per the diagram printed at the back of the cover in which the mic comes. ( the mic was purchased from radioshack)

but i tested the mic alone with just two wires attached to it and i connected it to the computer and then i was able to hear it from the speakers.


can the kits in the above posted links be sufficient to read the signal in osciloscope ? i will be posting my op-amp circuit too
 

audioguru

Well-Known Member
Most Helpful Member
Your computer has a mic input that powers an electret mic.

The Canakit CK495 preamp for an electret mic should work fine.
 
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