Pre Amplifier Collector Feedback One BJT 5V for Audio

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02:55:59

This is small signal audio amplifier, it can be input pre amplifier, amplifier for Electret microphones (add microphone bias resistor). The complete circuit is analyzed in this video: https://youtu.be/0oiju3hFjaA   
They can use the YT subtitle tool to better understand the video. Thank you 

published 6 years ago

hurz

6 years ago

frequncy characteristics needs some alignment. as you set input AC source to around 60Hz there is almost no gain only factor 1.5 while at 700Hz and above, set to 1kHz, you get factor 10!

electgpl

6 years ago

yes, it is correct, you have to modify the values of the capacitors to modify the frequency response, it will depend on the application that is required. Regards!

hurz

6 years ago

you are welcome!

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