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  2. Bipolar junction transistor - Wikipedia

    en.wikipedia.org/wiki/Bipolar_junction_transistor

    The diagram shows a schematic representation of an NPN transistor connected to two voltage sources. (The same description applies to a PNP transistor with reversed directions of current flow and applied voltage.) This applied voltage causes the lower p–n junction to become forward biased, allowing a flow of electrons from the emitter into the ...

  3. Common collector - Wikipedia

    en.wikipedia.org/wiki/Common_collector

    Figure 3: PNP version of the emitter-follower circuit, all polarities are reversed. A small voltage change on the input terminal will be replicated at the output (depending slightly on the transistor's gain and the value of the load resistance; see gain formula below). This circuit is useful because it has a large input impedance

  4. File:Ebers-Moll model schematic (PNP).svg - Wikipedia

    en.wikipedia.org/wiki/File:Ebers-Moll_model...

    A schematic diagram of the Ebers-Moll models of a PNP BJT. The base, collector and emitter currents are I B, I C and I E, the common-base forward and reverse current gains are α F and α R, and the collector and emitter diode currents are I CD and I ED. Date: 4 August 2010, 05:26 (UTC) Source: Ebers-Moll_Model_PNP.PNG; Author

  5. 2N3906 - Wikipedia

    en.wikipedia.org/wiki/2N3906

    The 2N3906 is a commonly used PNP bipolar junction transistor intended for general purpose low-power amplifying or switching applications. [1] [2] It is designed for low electric current and power and medium voltage, and can operate at moderately high speeds. It is complementary to the 2N3904 NPN transistor. [3]

  6. Transistor - Wikipedia

    en.wikipedia.org/wiki/Transistor

    The MOSFET is by far the most widely used transistor for both digital circuits as well as analog circuits, [103] accounting for 99.9% of all transistors in the world. [101] The bipolar junction transistor (BJT) was previously the most commonly used transistor during the 1950s to 1960s.

  7. File:Bjt forward active bands.svg - Wikipedia

    en.wikipedia.org/wiki/File:Bjt_forward_active...

    Energy band diagram of a simple NPN w:bipolar junction transistor in forward-active mode showing electron energy versus position. The w:depletion regions of the emitter-base and base-collector junctions are marked.

  8. File:BJT PNP symbol (case).svg - Wikipedia

    en.wikipedia.org/wiki/File:BJT_PNP_symbol_(case).svg

    PNP transistor symbol with case (IEEE 315). Note: A little confusing on the BJT page, ... This circuit diagram was created with the Electrical Symbols Library by v.

  9. 2N107 - Wikipedia

    en.wikipedia.org/wiki/2N107

    1950's PNP Transistors by General Electric. TOP ROW (L-R): 2N43, 2N44, 2N45, 2N107 and 2N188A BOTTOM ROW: 2N107, 2N191 and 2N241. The 2N107 is an early germanium alloy junction PNP transistor developed by General Electric (GE) in 1955, to become GE's entry into the electronic hobbyist market successfully started with the CK722 transistor.

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