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parthshah08 28th February 2012 07:43 AM

Earphone signal amplification
I'm new to this field. I've connected the earphone jack to my cell phone and have stripped the front part of both left and right side of earphone. There I see two wires in each of it. What does those 2 wires mean???

I want to amplify the signal directly as electrical signals only. So I'm trying it with the basic amplifier circuit using 741 op-amp. Will it work??
I've to give the amplified signal to ADC though.

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