This is simple condenser mic preamp circuit using 2N3904, The mic bring to change the sound to electrical signals. it is simple circuit and use 9V battery Read more
Imagine your dad is old. Sure, he hears anything weak sound.
How do you do?
You are an electronics inventor, right?
Yes, you can try to make a tool. To help him back to listen to great music again.
This project is small, use only one 1.5V battery. Using normally components you can buy in stores near you. Read more
TL084: low noise OP-AMP in cheap. Use JFET input. Why popular in audio & a lot of circuits: wide bandwidths and fast slew rates. Example: Read more
This is Low noise microphone preamplifier circuit using IC-NE5532, M5218P. Simple circuits but high quality balance-Unbalance Input for dynamic microphone Read more
The Dynamic Microphone Preamplifier circuit. So low noise signal,use three transistor (2SC945, or 2C1815 or 2SC828) is transistor amplifier with a low noise […] Read more