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Widlar current source: DC analysis, Finding the current with given resistor values & Output impedance

A Widlar current source is a modification of the basic two-transistor current mirror that incorporates an emitter degeneration resistor for only the output transistor, enabling the current source to generate low currents using only moderate resistor values.

Language: English [EN]
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Widlar current source topic overview

The analysis highlights DC analysis, Finding the current with given resistor values and Output impedance as prominent areas in the source structure around Widlar current source.

Related topics
25
Source areas
5
Connected nodes
30
Extracted relationships
11
Concept neighborhoods
16
Bridge connections
30

What this topic covers Research coverage

Source areas are shown by the number of related topics found in each part of the analysis. Use smaller areas too: they can reveal specialized angles and content gaps.

Overview · 8 topics
DC analysis · 5 topics
Finding the current with given resistor values · 5 topics
Output impedance · 4 topics
Design procedure with specified currents · 3 topics

Smaller areas are not necessarily less important. They contain fewer connections in this analysis and can be useful for finding specialized angles or coverage gaps.

Explore all related topics Closing gaps

Browse the complete topic structure, not only the most central items. Less prominent entities and concepts can reveal missing angles, specialized context and useful research gaps. Each item opens a new analysis centered on that subject.

Overview

DC analysis

Design procedure with specified currents

Finding the current with given resistor values

Output impedance

Advanced semantic analysis

Deeper signals for content research, entity SEO and topical coverage. The plain-language headings explain what each technical view is useful for.

How Widlar current source connects Entity context

The extracted context around Widlar current source shows recurring relationship patterns in the source. For example, Widlar current source → Figure, IB2, Q1, Q2, R2, Shockley, The, This, VBE, Widlar Another extracted example is Widlar current source → modification of the basic two-transistor current mirror that incorporates an emitter degeneration resistor for only the output transistor. Use these groups to spot repeated connection types before inspecting the individual relationships.

Widlar current source

Top relations

related to DC analysis · 10
Widlar current source → Figure, IB2, Q1, Q2, R2, Shockley, The, This, VBE, Widlar
is a · 1
Widlar current source → modification of the basic two-transistor current mirror that incorporates an emitter degeneration resistor for only the output transistor

Important terminology

Use these terms to understand the vocabulary surrounding the topic, not as a checklist for keyword stuffing.

Important terminology

current output circuit eq voltage resistance transistor r2 design using widlar currents source values value resistor r1 c1 ic1 displaystyle

Widlar current source relationships Subject–Predicate–Object triples

TTTA extracted 11 structured relationships around Widlar current source. Examples in this analysis include Widlar current source → is a → modification of the basic two-transistor current mirror that incorporates an emitter degeneration resistor for only the output transistor and Widlar current source → related to DC analysis → Figure. The table shows each extracted connection, where it came from and its confidence.

SubjectPredicateObjectConfidenceSrc
Widlar current sourceis amodification of the basic two-transistor current mirror that incorporates an emitter degeneration resistor for only the output transistor0.90text
Widlar current sourcerelated to DC analysisFigure0.60section
Widlar current sourcerelated to DC analysisWidlar0.60section
Widlar current sourcerelated to DC analysisR20.60section
Widlar current sourcerelated to DC analysisQ20.60section
Widlar current sourcerelated to DC analysisQ10.60section
Widlar current sourcerelated to DC analysisThe0.60section
Widlar current sourcerelated to DC analysisThis0.60section
Widlar current sourcerelated to DC analysisIB20.60section
Widlar current sourcerelated to DC analysisVBE0.60section
Widlar current sourcerelated to DC analysisShockley0.60section

Related concept clusters Concept neighborhoods

The concept neighborhoods around Widlar current source bring nearby vocabulary together. In this analysis, examples include Voltage, Used and Transistor. Use the clusters to find adjacent concepts and terminology that may deserve separate research.

  • Widlar current source
    • Voltage
    • Used
    • Transistor
    • Source
    • Circuit
    • Emitter
    • Resistor
    • Values
    • Currents
    • Using
    • R1
    • Larger
  • widlar current source
    • Output
    • Voltage
    • Source
    • Used
    • Transistor
    • Resistor
    • Widlar
    • Circuit
    • R2
    • Resistance
    • Using
    • Emitter
  • current mirror
    • Output
    • Voltage
    • Source
    • Resistor
    • R2
    • Resistance
    • Transistor
    • Values
    • Circuit
    • Design
    • Base
    • Using
  • resistor
    • Values
    • Design
    • Output
    • Currents
    • Source
    • Using
    • Dependence
    • R1
    • Figure
    • Resistance
    • Widlar
    • C1
  • voltage drop
    • Current
    • Base
    • Output
    • R2
    • Transistor
    • Q2
    • Resistance
    • Ic1
    • Source
    • Left
    • Q1
    • Circuit
  • thermal voltage
    • Current
    • Base
    • Output
    • R2
    • Transistor
    • Q2
    • Resistance
    • Ic1
    • Source
    • Left
    • Q1
    • Circuit
  • scale currents
    • Values
    • Resistor
    • Emitter
    • Figure
    • Transistor
    • Widlar
    • Eq
    • Source
    • Using
    • Design
    • Output
    • C1
  • constant current source
    • Output
    • Voltage
    • Source
    • Resistor
    • Widlar
    • R2
    • Resistance
    • Transistor
    • Using
    • Mirror
    • Circuit
    • Q2

Connections between topic areas Semantic bridges

For Widlar current source, one of the stronger structural bridges in this analysis connects Widlar current source with Overview. Bridges highlight paths between different parts of the map and can reveal research angles that are easy to miss in a flat list.

Min side: 3
Widlar current source — Overview · splits 22 ⟂ 9
Widlar current source — DC analysis · splits 25 ⟂ 6
Widlar current source — Finding the current with given resistor values · splits 25 ⟂ 6
Widlar current source — Output impedance · splits 26 ⟂ 5
Widlar current source — Design procedure with specified currents · splits 27 ⟂ 4

Map overview Semantic statistics

Widlar current source

Nodes31
Edges30
Triples11
Avg. degree1.94
Density0.064516
Components1

Source & methodology

TTTA analyzes the structure around Widlar current source to surface related topics, entities, relationships, concept neighborhoods and bridge connections. Use the map to explore areas such as DC analysis, Finding the current with given resistor values & Output impedance, including less central topics that may reveal useful research gaps. Automatically extracted connections are research leads rather than rewritten encyclopedia content.

Source: Wikipedia — Widlar current source · EN edition · Analysis: TopicsToTalkAbout

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