Introduction: Simple Signal Amplifier
More by the author:
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 (https://www.instructables.com/id/Simple-Frequency-Generator/) 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