Miscellaneous schematics

Build a captivating delayed visual indicator for doorbells, illuminating “Please Wait” for those with mobility challenges. This innovative circuit utilizes a simple switch and capacitor to provide a lasting signal, enhancing safety and convenience for all.... [read more]

Unlock deeper sleep with this innovative device, generating natural geomagnetic fields for a restorative night’s rest. Experience easier sleep and enhanced well-being – a tranquil haven awaits.... [read more]

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 your confidence and revitalize your appearance with this innovative Bio-Stimulator circuit. This portable set, powered by a 3V battery, offers a targeted approach to improve your look and aids in cellulitis treatment. Explore the circuit’s potential and unlock a new level of muscle stimulation and invigoration.... [read more]

Build captivating alerts with this simple mains-powered circuit. Easily activate a sound or light signal remotely, perfect for home automation projects. This kit provides a foundational understanding of mains circuit design and offers a rewarding build for electronics enthusiasts. Unlock your creativity and create innovative solutions with this accessible and inspiring project.... [read more]