एयर प्यूरीफायर कैसे काम करता है?
एयर प्यूरीफायर कैसे काम करता है?
एयर प्यूरीफायर हवा को खींचकर फिल्टर करता है। HEPA और कार्बन फिल्टर से धूल, धुआं, पराग और बदबू हटाई जाती है।
🔊💡 DIY Sound-Activated LED Bulb on 220V – Clap to Turn On!
🔊💡 DIY Sound-Activated LED Bulb on 220V – Clap to Turn On! Want your bulb to turn ON automatically with sound , like a clap or a snap? A sound sensor-based LED bulb on 220V can do exactly that! This project combines sound detection and AC lighting —great for automation, fun, and convenience. 🎯 What Is It? A sound-activated LED bulb lights up when it detects sound above a certain level (like a clap). It uses a microphone , amplifier, and a trigger circuit to switch a relay or triac , allowing 220V to flow to the LED bulb. 🔧 Required Components Component Description Electret Microphone Detects sound Transistor (BC547/548) Amplifies sound signal LM393 / Op-Amp / 555 Sound trigger stage Relay (5V or 12V) Controls 220V AC 220V LED Bulb Output load Power supply (5V/12V) To run the control circuit Diode 1N4007 x 4 Bridge rectifier Capacitors & Resistors Biasing and filtering Triac BT136 (optional) If not using relay Opto-isolator (optional) For safer AC switching ⚙️ H...
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