Maybe you are familiar with the op-amp as an extremely versatile component, and you know how to quickly construct a huge variety of circuits with one. Maybe you even have a favorite op-amp or two f… ...

1. The traditional inverting op-amp summer configuration exploits the low-impedance node (virtual ground) at the inverting input. The circuit is easy and straightforward to analyze and design with ...

A simple op-amp circuit placed between a transformerless circuit with a ground tied to neutral and a circuit with an earth ground will eliminate the safety and noise problems associated with such ...

We especially appreciated the simple, to-the-point presentation that inspires us to keep on hacking in the truest sense: Doing more with less!