Simple Audio Pre-Amplifier
This is a simple audio Pre-Amplifier with single transistor 2N3904.
This easy circuit provides good gain to weak audio signals such as electret microphone. Use it in front of an RF oscillator to make an RF transmitter that’s very sensitive to sound.
Hi can u plz plz plz help me,i own a nokia phone that has a very low sound volume.so i want to make a very tiny sound amp that i can attatch to a very small speaker so i can hear louder and better sound quality.plz respond so i know if this is possible thanks
hi dir i bult mic pre with lm 358 1k 100k feedbeak risister atach with pc 9volt powersupply his rang is vare low but iwant rang 1 feet whate i do my mic rang 1 feet chang feedback risistens or in put resistence or bult other bufer
Can I use this circuit for amplifying signals from an ultrasonic receiver ?
It works great for microphones. Perfect for small audio applications.
[...] sensitivity you could try an amplifier, maybe a transistor amp or an op-amp. Maybe something like this (I've not tried it). Reply With Quote + Post New [...]