Multistage Transistor Audio Amplifier Circuit

This electronics video tutorial discusses the basic elements of a multistage transistor audio amplifier circuit. It explains the importance of the bypass capacitors as it relates to voltage gain and distortion as well as the importance of the potentiometers for volume control and managing the input voltages. It also mentions the DC beta and hfe values of a typical NPN transistor as well as the purpose of the coupling capacitors. Finally, it discusses the efficiency of a regular common emitter transistor amplifier vs the class A transformer coupled amplifier.

Transistors - NPN & PNP:
   • Transistors - NPN & PNP - Basic Intro...  

BJT Transistors - Electronic Switches:
   • BJT Transistors - Electronics Switche...  

Night Activated LDR Sensor Circuit:
   • DIY Night Activated LDR Sensor Circui...  

Finding The DC Load Line & Q-Point:
   • Transistor Base Bias Circuits - Findi...  

Voltage Divider Bias Circuit:
   • Voltage Divider Bias Circuit  

Collector Feedback Bias Circuit:
   • Collector Feedback Bias Circuit  

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Emitter Feedback Bias Circuit:
   • Emitter Feedback Bias Circuit  

Common Emitter Amplifier:
   • Bipolar Junction Transistors - Common...  

Common Collector & Base Amplifier:
   • Common Collector and Common Base Ampl...  

Darlington Pair & Beta Current Gain:
   • BJT Transistors - Darlington Pair & D...  

Class A, AB, B, & C Amplifier Circuits:
   • Transistor Amplifiers - Class A, AB, ...  

Voltage Gain of Transistor Amplifier:
   • How To Calculate The Voltage Gain of ...  

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Transistor Audio Mixer Circuit:
   • Transistor Audio Mixer Circuit  

Operational Amplifiers:
   • Operational Amplifiers - Inverting & ...  

Summing Amplifiers:
   • Summing Amplifiers - Op Amp Circuits  

LM386 Audio Amplifier:
   • LM386 Audio Amplifier Circuit With Ba...  

LC Oscillator Tank Circuit:
   • LC Oscillator Tank Circuit  

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