Introduction: Simple Signal Amplifier

About: I'll be doing lots of interesting things here, but mainly :electronics (arduino, analog and digital), computers (old and new), programing (C# and python), linux (administration and hacking). Geeky enterteinmen…

In my last instructable ( i have filtered out sine wave, but it had very small amplitude. In this instructable i will amplify it

All you need is:

  • 220 ohm resisitor
  • 2N3904 transisitor
  • 1uF cap
  • 10 ohm resisitor
  • 8ohm speaker
  • 5V power supply

Step 1: Build It

This circuit is the most easy project that i have on my instructable profile

Step 2: Measure It

it amplifies signal nearly 10 time, that is very good result for such a small amount of components