The addition of a components and an unused NC contact to a dc supply provides a power-reducing feature to a relay driver circuit. Electromagnetic relays need much less power for holding than they do ...
Schweitzer Engineering Laboratories, Inc. (SEL) has announced wide-area-measurement-based control in a transformer relay for the first time. This enhancement to the SEL-487E Transformer Protection ...
All regulated power supplies require a feedback link from the output to control the power stage. When isolation is necessary, designers traditionally use an ...
Some results have been hidden because they may be inaccessible to you
Show inaccessible results