We still need a powered speaker in order to hear our synthesizer, but what
if we want to install a speaker into the interface? Enter the LM386 amplifier
circuit, perfect for boosting the gain on our hex schmitt synths and driving
speakers. Here’s what you’ll need…
- 10k potentiometer
- 250 uF Capacitor
- 47nF capacitor (optional)
- 100 ohm resistor (optional)
- LM386 audio amplifier IC
Here is a video with a detailed description of what you will need and how to build the circuit…
Here are the three representations of the 386 circuit. See if you can put together a working amplifier from these diagrams…
