hi anyone,
I am a newbie in electronics.
I have several questions:
1. i bought this microphone circuit from ebay. And, how can i listen to the voice / sound?
http://www.ebay.com/itm/New-Electro...crophone-Mic-Module-for-Arduino-/200964723455
2. I use MC34072, and try several circuits: differential amplifier, and non-inverting amplifier, with several different gains, with and without capacitor in input & output, i also try LM 386, but i can't hear any sound. However, if i blow hard to the microphone, i can then hear the sound but not sentences / voice, why?
3. does it matter which op-amp i use?
4. does it have to go through pre-amp followed by amp?
5. is that ok, if i feed that microphone signal directly into amplifier circuit as sold in ebay?
http://www.ebay.com/itm/291337551133
6. does it make a difference of the amplifier circuit based on electret microphone or condensor microphone?
I am a newbie in electronics.
I have several questions:
1. i bought this microphone circuit from ebay. And, how can i listen to the voice / sound?
http://www.ebay.com/itm/New-Electro...crophone-Mic-Module-for-Arduino-/200964723455
2. I use MC34072, and try several circuits: differential amplifier, and non-inverting amplifier, with several different gains, with and without capacitor in input & output, i also try LM 386, but i can't hear any sound. However, if i blow hard to the microphone, i can then hear the sound but not sentences / voice, why?
3. does it matter which op-amp i use?
4. does it have to go through pre-amp followed by amp?
5. is that ok, if i feed that microphone signal directly into amplifier circuit as sold in ebay?
http://www.ebay.com/itm/291337551133
6. does it make a difference of the amplifier circuit based on electret microphone or condensor microphone?