My problem seems to be high wattage power amps that are run at 100% tend to exhibit ground loop hum at my home, i.e., powered monitors. This same issue seems to crop up when I run passive speakers ...

Housed in a compact, explosion-proof package with dimensions of 1" x 1.5" x 2", EP900 Series of loop-powered (4 to 20 mA) controllers has a glass window for the optional LCD meter and three 1/2" NPT ...

For the PDF version of this article, click here. Most offline and telecom power supplies need a method to isolate the relatively high input voltage from lower voltage outputs to provide safety, ...