Know Your IC seeks to demystify common Integrated Circuits and allows people to understand them to a point where they can use them in their own projects.
This episode will feature the LM386 a popular op amp chip. We will go over the chip functions and a bit of history.
And we will teach you how to build a simple amplifier with the chip!
Step 1: Introducing Op Amps
Op-amps are perfect when you need to take a signal and have it go much higher than the original, for example doing audio amplification. Wikipedia has a great history of the op-amp and it's development.
LM386 is made specificly for low voltage applications. Different op-amps will have different requirements, always check out the data sheet! The LM386 can take 4V-12V or 5V-18V depending on the wiring and pump that up 20 to 200 times.
You can use this chip to build any of the following:
AM-FM radio amplifiers
Portable tape player amplifiers
Small Servo Drivers