The design and construction of a 40 watt hi-fi amplifier
Table Of Contents
- Approval pageDedicationAcknowledgementTable of contentCHAPTER ONEIntroductionCHAPTER TWOComponents ExplanationCapacitorValue of a capacitorToleranceWorking voltageLeakage currentComponent and Operation of a CapacitorResistorPrinted Circuit BoardLoudspeakerCabinet ScreenHeat SinkVariable ResistorIntegrated CircuitDiodeCHAPTER THREEDiagrams of project Operation manualCHAPTER FOURConstructionEconomic of the projectReliabilityMaintainabilityTestingCHAPTER FIVEConclusionBibliography
Thesis Abstract
High power amplifier are usually quite costly and usually beyond the easy reach of most audio enthusiastic (and Hi-Fi buffs) who then have to remain satisfied with those small 6 watt amplifiers. Well, with this introduction to us and to electronics, things should change. Well this low cost Hi-Fi amplifier that delivers ear chatting and thundering output of an unbelievable forty watts. The unique features of this circuit are.
- Low cost – The basic criteria
- Compact size
- Very low transient noise on “power on†and low THO
- Effective Bass and treble controls
- Automatic thermal shut down system it switches off the amplifier in case of overheating
- Load damp protection in built.
The circuit uses a high power amplifier chip viz the LA 4440. the circuit is quite self explanatory. The input is coupled by a small value capacitor. The output is taken through a block terminal and fed to the speaker.
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