fezder
Well-Known Member
I can find simple 100x amplifier circuits for electret mikrophone, but can't find/design any amplifier circuit that would have AGC (low noises are amplfied much, but high-volume noises are compressed so output doesn't clip if there is too loud sound)
Adafruit sells breakout board that has AGC, but i see it quite expensive as there is shipping costs too.
so, this is basic electret amp i use currently
https://www.sparkfun.com/datasheets/BreakoutBoards/Amplified-Mic-Electret-v14.pdf
Why i'd like to have AGC is jut for in case and learning on the way
and i don't have any suitable fets, only irf 540's so that's why i'm looking for one that uses transistors instead.
I do know that AGC does something in opamps feedback, probadly in negative input of opamp
Thanks!
Adafruit sells breakout board that has AGC, but i see it quite expensive as there is shipping costs too.
so, this is basic electret amp i use currently
https://www.sparkfun.com/datasheets/BreakoutBoards/Amplified-Mic-Electret-v14.pdf
Why i'd like to have AGC is jut for in case and learning on the way
and i don't have any suitable fets, only irf 540's so that's why i'm looking for one that uses transistors instead.
I do know that AGC does something in opamps feedback, probadly in negative input of opamp
Thanks!