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DIY Motorcycle ‘Doo-Doo-Doo’ Sound Circuit With Only Capacitors and Resistors and Transistors (Suitable for Teaching Purpose in Circuit Lab)
Capacitors Charging and Discharging Experiment for School Learning
DIY a Colorful Happy Birthday LED Candle Circuit
DIY an Attractive Wooden Remote Control Car for Kids
DIY an Adjustable Power Supply Source With Voltmeter Function
DIY Funny Sound Control Logic Circuit With Only Resistors Capacitors Transistors
Analog Circuit Knowledge - DIY a Ticking Clock Sound Effect Circuit Without IC
DIY an Air Raid Siren With Resistors and Capacitors and Transistors
DIY a Basic Common Emitter Amplifier for School Studying
DIY an Astable Multivibrator and Explain How It Works
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