By using op amps powered from a bipolar supply and ground-referencing the sensor signals, the op amp’s output will be at zero ...

Callaway County Emergency Management said that the outside warning sirens in the city of Fulton were not working. A press release from the county stated that there was a technical malfunction. Crews ...

But as [gschmidt958] explains, this is strictly for the challenge, plus it made a nice entry in the recently concluded Op-Amp Challenge contest. His work began in simulation, exploring op-amp ...