Know the basics of open- and closed-circuit filtration designs. Factors to consider when specifying a return line filter system. Selecting the appropriate filtration system when designing a ...

A closed-circuit television camera looks after an art museum (January 1951 Radio-Electronics) It’s hard to imagine a world before the ubiquitous security camera. In major cities around the world ...

Open cooling towers expose process cooling water to the atmosphere, typically as part of a chiller system loop (see Figure 1). These open towers use an efficient, simple, and economical design. All ...

Qucs is a GPL circuit simulator. And if you want the GUI option, you might want to try out QucsStudio, which uses Qucs under the hood, and is free to use, but binary-only.