book

Principles of Transistor Circuits, 9th Edition

by S Amos, Mike James

March 2000

Intermediate to advanced

416 pages

11h 9m

English

Newnes

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IntroductionMechanism of semiconductionCompound semiconductorsPN junctionsJunction diodes
Bipolar transistorsField-effect transistorsThyristors
Common-base amplifiersCommon-gate amplifiers
Common-emitter amplifiersCommon-source amplifiers
Common-collector amplifiersComparison of bipolar transistor amplifiersCommon-drain amplifiersComparison of field-effect transistor amplifiers

Bipolar transistorsField-effect transistors
Definition of small-signal amplifierDistinction between voltage and current amplifiersTransistor parameters in small-signal amplifiersSingle-transistor stagesTwo-stage amplifiersUse of negative feedbackTwo-stage amplifiersComplementary amplifiersEmitter followerDarlington circuitLow-noise transistor amplifiersCircuits employing fet and bipolar transistors
Definition of a large-signal amplifierTransistor parameters in large-signal amplifiersClass-A amplifiersClass-B amplifiersComplementary class-B amplifierCurrent-dumping amplifiersBridge output stageIntegrated-circuit a.f. power amplifierHeat sinksDarlington power transistors
IntroductionD.C. amplifiersOperational amplifiersPulse amplifiersVoltage pulse amplifiersComplementary emitter followerVideo amplifier for television receiverIntegrated-circuit pulse amplifier
IntroductionClass-C operationCommon-emitter r.f. amplifiersCommon-base r.f. amplifierI.F. amplifiersAutomatic gain control (A.G.C.)DecouplingUse of integrated circuits
IntroductionPositive-feed back oscillatorsPhase-shift oscillatorsNegative-resistance oscillators
IntroductionAmplitude modulatorsFrequency modulatorsA.M. detectorsF.M. detectorsMixersSatellite low noise blockComplete receivers
Introduction: the transistor as a switchMultivibrator: bistableMultivibrator: monostableMultivibrator: astableSynchronising of multivibratorsEmitter-coupled multivibratorBlocking oscillator
IntroductionSimple discharger circuitMiller-integrator circuitConstant-current chargerLine output stage for television receiver
IntroductionLogic levelsBinary scaleLogic gatesBistablesDigital representation of informationStores
IntroductionSupply-voltage stabilising circuitsD.C. to D.C. convertersPhoto-diodePhoto-transistorsOptocouplersLaser diode in a CD playerUnijunction transistor (double-base diode)Inverter using thyristorsTriac control of a.c. energyResistance-to-voltage converterMotor-drive circuitsTelevision picture enhancementRecording head driveTransistors as switchesVideo clampU.H.F. modulatorCapacitance-diode a.f.c. circuitAttenuator using an fetBias/erase oscillator
Preparation of germanium for transistor manufacturePreparation of silicon for transistor manufactureGrown transistorsAlloy-junction transistorsSurface-barrier transistorDrift transistorsDiffused transistorsEpitaxial diffused transistorsPlanar transistorsIntegrated (monolithic) circuits
IntroductionZ parametersY parametersHybrid parametersRelationship between hybrid parameters and the T-section equivalent circuit
BipolarUnijunctionField EffectDiodes

Content preview from Principles of Transistor Circuits, 9th Edition

Chapter 7

Small-signal a.f. amplifiers

Definition of small-signal amplifier

Some amplifiers are required to deliver an output voltage or output current which is small compared with the maximum that the amplifier could deliver. When a voltage output is wanted, the magnitude of the current output is usually of little consequence provided the transistor(s) can supply it without distortion. Similarly if the amplifier is designed to supply a current output, the magnitude of the voltage output is of secondary importance provided it is not sufficient to cause overloading and distortion. Such amplifiers are termed small-signal amplifiers: typical examples are microphone head amplifiers and the r.f. and early i.f. stages in a receiver.