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  2. Bipolar junction transistor - Wikipedia

    en.wikipedia.org/wiki/Bipolar_junction_transistor

    The junction version known as the bipolar junction transistor (BJT), invented by Shockley in 1948, [12] was for three decades the device of choice in the design of discrete and integrated circuits. Nowadays, the use of the BJT has declined in favor of CMOS technology in the design of digital integrated circuits.

  3. Heterojunction bipolar transistor - Wikipedia

    en.wikipedia.org/wiki/Heterojunction_bipolar...

    A heterojunction bipolar transistor (HBT) is a type of bipolar junction transistor (BJT) that uses different semiconductor materials for the emitter and base regions, creating a heterojunction. The HBT improves on the BJT in that it can handle signals of very high frequencies, up to several hundred GHz.

  4. Early effect - Wikipedia

    en.wikipedia.org/wiki/Early_effect

    Early, is the variation in the effective width of the base in a bipolar junction transistor (BJT) due to a variation in the applied base-to-collector voltage. A greater reverse bias across the collector–base junction, for example, increases the collector–base depletion width , thereby decreasing the width of the charge carrier portion of ...

  5. 2N2222 - Wikipedia

    en.wikipedia.org/wiki/2N2222

    The 2N2222 is a common NPN bipolar junction transistor (BJT) used for general purpose low-power amplifying or switching applications. It is designed for low to medium current, low power, medium voltage, and can operate at moderately high speeds. It was originally made in the TO-18 metal can as shown in the picture.

  6. 21 All-Time Favorite Vegetarian Lunches for Winter - AOL

    www.aol.com/21-time-favorite-vegetarian-lunches...

    Cabbage soup gets a boost of fiber and heartiness with the addition of beans. A simple tomato broth is brightened by fresh herbs and has slight heat from crushed red pepper. Serve with crusty bread.

  7. New Jersey sinkhole: Photos show 40-foot-deep depression on ...

    www.aol.com/jersey-sinkhole-photos-show-40...

    Heavy machinery is seen Thursday at the site of a massive sinkhole that formed off Interstate 80 in New Jersey, just west of New York City, as crews evaluate the depression to design a repair.