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Common collector information


Figure 1: Basic NPN common collector circuit (neglecting biasing details).

In electronics, a common collector amplifier (also known as an emitter follower) is one of three basic single-stage bipolar junction transistor (BJT) amplifier topologies, typically used as a voltage buffer.

In this circuit the base terminal of the transistor serves as the input, the emitter is the output, and the collector is common to both (for example, it may be tied to ground reference or a power supply rail), hence its name. The analogous field-effect transistor circuit is the common drain amplifier and the analogous tube circuit is the cathode follower.

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Common collector

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In electronics, a common collector amplifier (also known as an emitter follower) is one of three basic single-stage bipolar junction transistor (BJT) amplifier...

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Common emitter

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terminal of the transistor serves as the input, the collector is the output, and the emitter is common to both (for example, it may be tied to ground reference...

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Bipolar junction transistor

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amplifiers. The three main BJT amplifier topologies are: Common emitter Common base Common collector Because of the known temperature and current dependence...

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Open collector

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Open collector, open drain, open emitter, and open source refer to integrated circuit (IC) output pin configurations that process the IC's internal function...

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Common drain

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speaker. The analogous bipolar junction transistor circuit is the common-collector amplifier. This circuit is also commonly called a "stabilizer". In...

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Differential amplifier

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(usually, the other collector is used as a single-ended output) This arrangement can be thought of as cascaded common-collector and common-base stages or as...

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Colpitts oscillator

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the transistor, as feedback to create oscillations. Fig. 2 shows the common-collector version. Here the voltage across C1 provides feedback. The frequency...

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Amplifier

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transistor can realize common base, common collector or common emitter amplification; a MOSFET can realize common gate, common source or common drain amplification...

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Common base

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the transistor serves as the input, the collector as the output, and the base is connected to ground, or "common", hence its name. The analogous field-effect...

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Buffer amplifier

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gain buffer amplifiers include the bipolar junction transistor in common-collector configuration (called an emitter follower because the emitter voltage...

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Common source

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is handled.) Miller effect Pole splitting Common gate Common drain Common base Common emitter Common collector R.R. Spencer; M.S. Ghausi (2003). Introduction...

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Multistage amplifier

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resistance. The final stage can be a common collector configuration to act as a buffer amplifier. Common collector stages have no voltage gain but high...

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Common gate

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amplifier variables Two-port networks Common drain Common source Common base Common emitter Common collector Paul R. Gray; Paul J. Hurst; Stephen H. Lewis;...

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Schmitt trigger

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determining its threshold. The comparator output drives the second common collector stage Q2 (an emitter follower) through the voltage divider R1-R2. The...

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Solar thermal collector

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A solar thermal collector collects heat by absorbing sunlight. The term "solar collector" commonly refers to a device for solar hot water heating, but...

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Uropygial gland

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made up of glandular acini that deposit their oil secretion into a common collector tube ending in a variable number of pores (openings), most typically...

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Pinout

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pinouts at pinout.net Pinouts of hardware connectors with a description of common interfaces at pinouts.ru Pinouts (pin-out) - Historical Pinouts collection...

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VCC

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Marines Cadets of the UK's Royal Navy Voltage common collector (VCC), an IC power-supply pin and collector supply line voltage in an NPN circuit Virtual...

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Dust collector

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A dust collector is a system used to enhance the quality of air released from industrial and commercial processes by collecting dust and other impurities...

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Bow collector

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A bow collector is one of the three main devices used on tramcars to transfer electric current from the wires above to the tram below. While once very...

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Bipolar transistor biasing

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following discussion treats five common biasing circuits used with class-A bipolar transistor amplifiers: Fixed bias Collector-to-base bias Fixed bias with...

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Boehm garbage collector

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Boehm–Demers–Weiser garbage collector, often simply known as the Boehm GC or Boehm collector, is a conservative garbage collector for C and C++ developed...

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Wilson current mirror

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common collector amplifier and the base voltage of Q1 and Q2 begins to rise. As this base voltage increases, current begins to flow in the collector of...

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Gummel plot

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plot: The common-emitter current gain, β {\displaystyle \beta } , and the common-base current gain, α {\displaystyle \alpha } , Base and collector ideality...

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