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- Early_effect abstract "The Early effect, named after its discoverer James M. Early, is the variation in the 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, decreasing the width of the charge neutral portion of the base.In Figure 1 the neutral (i.e. active) base is green, and the depleted base regions are hashed light green. The neutral emitter and collector regions are dark blue and the depleted regions hashed light blue. Under increased collector–base reverse bias, the lower panel of Figure 1 shows a widening of the depletion region in the base and the associated narrowing of the neutral base region.The collector depletion region also increases under reverse bias, more than does that of the base, because the collector is less heavily doped. The principle governing these two widths is charge neutrality. The narrowing of the collector does not have a significant effect as the collector is much longer than the base. The emitter–base junction is unchanged because the emitter–base voltage is the same.Base-narrowing has two consequences that affect the current:There is a lesser chance for recombination within the "smaller" base region.The charge gradient is increased across the base, and consequently, the current of minority carriers injected across the emitter junction increases.Both these factors increase the collector or "output" current of the transistor with an increase in the collector voltage. This increased current is shown in Figure 2. Tangents to the characteristics at large voltages extrapolate backward to intercept the voltage axis at a voltage called the Early voltage, often denoted by the symbol VA.".
- Early_effect thumbnail Early_effect_(NPN).svg?width=300.
- Early_effect wikiPageID "5596655".
- Early_effect wikiPageLength "13173".
- Early_effect wikiPageOutDegree "22".
- Early_effect wikiPageRevisionID "674953313".
- Early_effect wikiPageWikiLink Active_load.
- Early_effect wikiPageWikiLink Bipolar_junction_transistor.
- Early_effect wikiPageWikiLink Boltzmann_constant.
- Early_effect wikiPageWikiLink Category:Transistor_modeling.
- Early_effect wikiPageWikiLink Channel_length_modulation.
- Early_effect wikiPageWikiLink Common-emitter.
- Early_effect wikiPageWikiLink Common_emitter.
- Early_effect wikiPageWikiLink Current_mirror.
- Early_effect wikiPageWikiLink Depletion_region.
- Early_effect wikiPageWikiLink Depletion_width.
- Early_effect wikiPageWikiLink Hybrid-pi_model.
- Early_effect wikiPageWikiLink James_M._Early.
- Early_effect wikiPageWikiLink MOSFET.
- Early_effect wikiPageWikiLink Output_impedance.
- Early_effect wikiPageWikiLink Output_resistance.
- Early_effect wikiPageWikiLink P–n_junction.
- Early_effect wikiPageWikiLink Reverse_bias.
- Early_effect wikiPageWikiLink SPICE.
- Early_effect wikiPageWikiLink Small-signal.
- Early_effect wikiPageWikiLink Small-signal_model.
- Early_effect wikiPageWikiLink File:Early_effect_(NPN).svg.
- Early_effect wikiPageWikiLink File:Early_effect_(graph_-_I_C_vs_V_CE).svg.
- Early_effect wikiPageWikiLinkText "Early Voltage".
- Early_effect wikiPageWikiLinkText "Early effect small-signal model".
- Early_effect wikiPageWikiLinkText "Early effect".
- Early_effect wikiPageWikiLinkText "Early voltage".
- Early_effect hasPhotoCollection Early_effect.
- Early_effect wikiPageUsesTemplate Template:Citation_needed.
- Early_effect wikiPageUsesTemplate Template:Reflist.
- Early_effect wikiPageUsesTemplate Template:Use_dmy_dates.
- Early_effect subject Category:Transistor_modeling.
- Early_effect hypernym Variation.
- Early_effect type Article.
- Early_effect type Food.
- Early_effect type Article.
- Early_effect type Transistor.
- Early_effect comment "The Early effect, named after its discoverer James M. Early, is the variation in the 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, decreasing the width of the charge neutral portion of the base.In Figure 1 the neutral (i.e. active) base is green, and the depleted base regions are hashed light green.".
- Early_effect label "Early effect".
- Early_effect sameAs Early-Effekt.
- Early_effect sameAs Effet_Early.
- Early_effect sameAs Effetto_Early.
- Early_effect sameAs m.0dvdk1.
- Early_effect sameAs Efectul_Early.
- Early_effect sameAs Эффект_Эрли.
- Early_effect sameAs Ефект_Ерлі.
- Early_effect sameAs Q929361.
- Early_effect sameAs Q929361.
- Early_effect sameAs 爾利效應.
- Early_effect wasDerivedFrom Early_effect?oldid=674953313.
- Early_effect depiction Early_effect_(NPN).svg.
- Early_effect isPrimaryTopicOf Early_effect.