Welcome!

Build a versatile 12-15 volt dual polarity power supply perfect for powering op amps and experimenting with dual supply circuits. This easy-to-assemble project uses just a few components and provides a stable, adjustable voltage source for your electronics builds.... [read more]

Unleash the potential of this versatile amplifier circuit, designed for a wide range of audio applications. This 50K opamp-based design, boosted by two transistors, delivers a maximum output of 90mR into 8W headphones and boasts a stunning 0.5dB drop at 30Hz and 20kHz. Build your innovative projects with this powerful and adaptable schematic.... [read more]

Build your own 1000 Watt Portable Power Inverter – Transform 12V into 120V AC for TVs, Stereos, and More! Discover how to create a robust power solution for camping, emergencies, or off-grid adventures with this detailed guide and schematic.... [read more]

Build a powerful 12V charger with a single BD140 transistor, delivering 15mA to 45mA for 1.5V and 9V rechargeable batteries. Ensure correct polarity and observe critical circuit safety with a voltmeter to prevent battery explosions.... [read more]

Build your own crystal radio receiver and unlock the secrets of 1070 KNX! This detailed schematic guides you through constructing a sensitive radio that pulls in strong LA stations with a 15 foot antenna, utilizing 200 turns of wire for optimal performance and a germanium 1N34A diode for superior reception.... [read more]

Build your own smart windshield wiper activation circuit and elevate your automotive project with this simple yet ingenious design. This project utilizes readily available components to automatically extend windshield wiper operation after cleaning, eliminating streaks and ensuring a pristine view.... [read more]