Complex sentence: However, in electronics, the term "resistance" is routinely applied to the static resistance at the ports of active circuits such as amplifiers, which can be negative because they have a source of electric power; the DC supply power applied to other ports.
Split into simpler sentences: However, in electronics, the term "resistance" is routinely applied to the static resistance at the ports of active circuits such as amplifiers. These can have true negative static resistance because they have a source of electric power; the DC supply power applied to other ports.