Op amps are pretty dang cool, with a lot of neat circuits you could build using them. I actually just put the finishing touches on my first actual op amp design and sent the design files over to ...

Make sure to match the right and left amplifier inputs appropriately. Plug the left speaker into the positive high-level output and the right speaker into the negative high-level output.

Make a portable audio simple amplifier. Homemade amplifier for speakers Subscribe! Top Biden aide admits to Congress she ...

To make things simple, let’s make up RX=R2*B*RE/(R2+B*RE) — the parallel combination of R2 and RE. Now we can solve for the voltage divider using RX instead of R2 and get the same answer, 34.

In circuits 1, 2, and 3, the LM386 inputs are connected directly across the tank circuit and use the LM386 as an RF envelope detector. Circuit 4, with its relatively large value coupling capacitor, ...

Of course, (happily) there is more to learn. For example, much has been written on how to stabilize op amp circuits with excessive capacitive loading. My favorite reference on op amp circuits is Stout ...