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  2. File:BJT PNP symbol.svg - Wikipedia

    en.wikipedia.org/wiki/File:BJT_PNP_symbol.svg

    (In short, this means that you can copy and modify the image freely as long as you provide attribution; preferably in the form of a link back to this page.) This W3C-unspecified circuit diagram was created with the Electrical Symbols Library .

  3. File:BJT symbol PNP.svg - Wikipedia

    en.wikipedia.org/wiki/File:BJT_symbol_PNP.svg

    This work has been released into the public domain by its author, E2m.This applies worldwide. In some countries this may not be legally possible; if so: E2m grants anyone the right to use this work for any purpose, without any conditions, unless such conditions are required by law.

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

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

    Description: PNP transistor symbol with case (IEEE 315). Note: A little confusing on the BJT page, because the NPN is drawn with Collector (C) on the top, while here it is drawn on the bottom. Date: 11 November 2007: Source: Own work: Author: Zedh: Other versions.svg:

  5. Electronic symbol - Wikipedia

    en.wikipedia.org/wiki/Electronic_symbol

    An electronic symbol is a pictogram used to represent various electrical and electronic devices or functions, such as wires, batteries, resistors, and transistors, in a schematic diagram of an electrical or electronic circuit. These symbols are largely standardized internationally today, but may vary from country to country, or engineering ...

  6. File:PNP emitter follower.svg - Wikipedia

    en.wikipedia.org/wiki/File:PNP_emitter_follower.svg

    You are free: to share – to copy, distribute and transmit the work; to remix – to adapt the work; Under the following conditions: attribution – You must give appropriate credit, provide a link to the license, and indicate if changes were made.

  7. Mullard - Wikipedia

    en.wikipedia.org/wiki/Mullard

    Mullard's first silicon transistors were the OC201 to OC207, PNP alloy types using the standard SO-2 metal-over-glass construction such as the OC200 shown. From about 1960 Mullard switched to using the BC prefix for silicon, and AC for germanium, eliminating the confusion of part numbers. in the mid-1960s the first plastic packages were introduced.

  8. Diode–transistor logic - Wikipedia

    en.wikipedia.org/wiki/Diode–transistor_logic

    Diode–transistor logic (DTL) is a class of digital circuits that is the direct ancestor of transistortransistor logic. It is called so because the logic gating functions AND and OR are performed by diode logic , while logical inversion (NOT) and amplification (providing signal restoration) is performed by a transistor (in contrast with ...

  9. Extrinsic semiconductor - Wikipedia

    en.wikipedia.org/wiki/Extrinsic_semiconductor

    The most common BJTs are NPN and PNP type. NPN transistors have two layers of n-type semiconductors sandwiching a p-type semiconductor. PNP transistors have two layers of p-type semiconductors sandwiching an n-type semiconductor. Field-effect transistors (FET) are another type of transistor which amplify current implementing extrinsic ...