Report Common Emitter Audio Amplifier Question in Electronic Projects Design/Ideas Posted May 28, 2012 I'm tring to build an audio amplifier. I decided to use a basic common emitter amplifier circuit as a starting point and added a speaker to it.I have some questions about the circuit.1-) Is 2n2222 ok for this circuit?Results of DC analysis: Vce = 10.06V and Ic = 1.26mA (I guess, these values will be used for choosing the transistor.)2-) What's the output voltage of a standart mp3 player? Can it be 300mVp as I read somewhere?3-) When I assume ß = 150 and input = 300mVp , the output is -2,13Vp . I guess it gives 1w power to speaker. Is there something wrong?4-) Is connecting speaker parellel to output R ok?Thank you..
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Common Emitter Audio Amplifier Question
in Electronic Projects Design/Ideas
Posted
I'm tring to build an audio amplifier. I decided to use a basic common emitter amplifier circuit as a starting point and added a speaker to it.
I have some questions about the circuit.
1-) Is 2n2222 ok for this circuit?
Results of DC analysis: Vce = 10.06V and Ic = 1.26mA (I guess, these values will be used for choosing the transistor.)
2-) What's the output voltage of a standart mp3 player? Can it be 300mVp as I read somewhere?
3-) When I assume ß = 150 and input = 300mVp , the output is -2,13Vp . I guess it gives 1w power to speaker. Is there something wrong?
4-) Is connecting speaker parellel to output R ok?
Thank you..