A diode is an electrical circuit component that allows current to flow in only one direction. A diode consists of two electrodes sealed in a vacuum. One electrode, the cathode, is attached to a negative electric potential, the other electrode, the...

Many people have heard of and encountered light-emitting diodes, also called LEDs; they are used often in electronic toys and readouts. The first diodes were invented to serve as rectifiers--that is, they were used to convert alternating current (AC)...

A device with two terminals fitted into an electric system, its purpose being that it allows electric current to flow in one direction...

Strictly speaking, a diode is any device possessing two (and only two) electrodes. Thermionic diodes may also have two ancillary terminals for a heater. Most diodes have 2 active electrodes between which the signal of interest may flow, and most are...

Intel, IBM and other chipmakers vie to come out with new chip designs that crank up the speed of their chips and keep power use down. With them, chip design is king. Not so for Diodes DIOD. The main value of its chips is in...

The Nasdaq closed higher, but lagged other major indexes as technology stocks trailed blue chips. The Nasdaq composite stuck close to its 50-day moving average, adding 0.3%. Volume fell again.The Nasdaq 100 rose 0.5%. The composite's biotech index slumped 0.6%, while its transportation index had...

The light bulb, the symbol of bright ideas, doesn't look like such a great idea anymore, as lawmakers in the U.S. and abroad are talking about banning the century-old technology because of its contribution to global warming.But what comes next? Compact fluorescent bulbs are the...

The famous necklace lights on the Brooklyn Bridge will go "green" next year as part of several environmental upgrades around the city, officials said Wednesday.Changing 160 lights on the landmark bridge, which turns 125 years old next year, is expected to cost $500,000. Other city...