Welcome!

Build a powerful square wave generator from a sine wave, no power source needed! This innovative circuit, featured in ELECTRONICS WORLD, transforms signals with precision, ideal for audio testing and experimentation. Achieve perfect mark-space ratios and exceptional rise/fall times across a 20Hz-20KHz range.... [read more]

Build a magnetic field detector with this simple oscillator circuit. This 2-channel project recovers a ferrite rod and coil from an old Medium Wave receiver to detect the Earth magnetic field and create a remarkable audible response.... [read more]

Build a remote water level monitoring system with this innovative circuit, utilizing a simple control unit to safeguard against mains supply issues and battery drain. This system precisely measures water levels in metal tanks, activating LEDs to signal alerts – a vital tool for proactive monitoring and control.... [read more]

Build powerful, cost-effective circuits using just 5V and two op-amps to control multiple ICs with innovative high-impedance techniques. Unlock advanced functionality and expand your microcontroller designs with this clever schematic.... [read more]

Door alarm circuit: Build your own security system with this innovative design, featuring a flashing LED and audible beep to alert you of unauthorized access. This easy-to-assemble circuit provides peace of mind by signaling when a door handle is touched from the outside.... [read more]

Build your own oscilloscope testing module inspired by the innovative Huntron circuit. Diagnose and troubleshoot digital PC boards with this simple, effective 12 volt transformer based schematic.... [read more]