Simple Audio Amplifier Using Single Transistor
Simple Audio Amplifier Using Single Transistor
183.3K viewsOct 1, 2020
instructables.com
This is a simple transistor radio circuit that can detect AM (Amplitude Modulated) signals and play them directly through a small speaker. The entire circuit runs on just a 1.5V battery, making it a perfect project for electronics beginners. 🔧 Components Used: Transistors: 3 × BC547 (NPN) Resistors: 1.8kΩ, 3.3kΩ, 2.2kΩ, 100kΩ, 10Ω Capacitors: 0.01µF, 0.1µF (×2), 0.47µF, 137.5pF (tuning capacitor) Inductor: 1mH coil (works as antenna and tuning coil) Speaker: 8Ω mini speaker Battery: 1.5V cell -
6:24
This is a simple transistor radio circuit that can detect AM (Amplitude Modulated) signals and play them directly through a small speaker. The entire circuit runs on just a 1.5V battery, making it a perfect project for electronics beginners. 🔧 Components Used: Transistors: 3 × BC547 (NPN) Resistors: 1.8kΩ, 3.3kΩ, 2.2kΩ, 100kΩ, 10Ω Capacitors: 0.01µF, 0.1µF (×2), 0.47µF, 137.5pF (tuning capacitor) Inductor: 1mH coil (works as antenna and tuning coil) Speaker: 8Ω mini speaker Battery: 1.5V cell -
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