A COVID-19 sensor developed at Johns Hopkins University could revolutionize virus testing by adding accuracy and speed to a process that frustrated many during the pandemic. In a new study published ...

During testing he hooked up the hall effect sensor to both his home-made circuit, and an oscilloscope to confirm his findings.

In our RPM Sensor Module circuit, UGN3503 (H1) gives an output propotional to the magnetic field intensity, which is converted into logical pulses by the OpAmp LM358 (IC1). Sensitivity of IC1 can be ...

Researchers have developed a real-time ultraflexible sensor that makes inflammation testing and curing 30 times faster.