For those who don’t design audio circuits full-time, a Bessel filter is a linear, passive bandpass filter that preserves waveshapes of signals that are within the range of the filter’s pass ...

We bet when [devttyS0] made his latest video about RF filter design (YouTube, embedded below), he had the old saying in mind: in theory, there’s no difference between theory and practice ...

Understand the need for input filters and the effects input filters may have on converter responses. Design properly damped single and multi-section filters to meet the conducted EMI attenuation ...

Researchers in Copenhagen have created a market-ready anti-pollution filter designed to quickly remove nitrogen dioxide (NO2) and particulate matter from inside vehicles. They say the Airbubbl is ...

By mid-October, the Environmental Protection Agency (EPA) stepped in, testing its efficiency and finding that Shokunbi's design made the grade. "It showed that the air filter took out over 99% of ...