@futurewiretech1: Amplifier Using LM7805 #electronics #DIY #diyelectronics In this video, we show you how to build a mini amplifier circuit using a 3.7V battery, LM7805 voltage regulator, and a 3.5mm audio jack input. This simple setup can drive a small speaker directly from a phone or MP3 player! 🔧 Main Components: LM7805 Regulator 1KΩ Resistor 220uF 16V Capacitor 3.5mm Audio Jack 3.7V Li-ion Battery Small 8Ω Speaker 📌 This circuit works well for basic portable speakers, DIY audio toys, or learning projects. Clean and minimal components for easy building! ⚠️ Note: Output power is limited. For more volume, pair this with a transistor or amplifier IC. #amplifiercircuit #minispeaker #diyamplifier #lm7805audio #3.7vbatteryamp #simpleaudioamp #diyelectronics #audiojackcircuit #portableamp #musicdiy

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Saturday 29 August 2026 18:21:29 GMT