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Build your own electronic die and unlock unpredictable results with this innovative circuit! Featuring a 4060 digital counter, this project delivers a truly random dice roll, ensuring no more biased outcomes. Create a captivating display of seven LEDs, designed to mimic the classic die, and experience the thrill of instant, unpredictable results.... [read more]

Unleash your circuit designs with this 1-amp variable-voltage PSU, expertly adjustable from 3v to 24v. Precisely control current limits from 10mA to 65mA, safeguarding your projects during initial power-ups and rigorous soak tests. Build confidently knowing you have the power to shape your electronics.... [read more]

Build stunning RC oscillators using the ultra-fast AD8099 opamp! This project delivers a stable 108 MHz VHF FM signal with adjustable frequency and impressive output power, perfect for experimenting with radio design.... [read more]

Build a superior audio amplifier with precise control over frequency response, achieving ideal listening conditions across all volume levels. This detailed schematic and parts list allows you to create a 40dB range amplifier, utilizing the human ear’s sensitivity variations as demonstrated by Fletcher-Munson curves. Maximize performance with this robust design and unlock exceptional audio fidelity.... [read more]

Protect your 12V fridge and car stereo systems with this vital circuit, designed to prevent battery drain and ensure reliable operation. This innovative Battery Guardian automatically cuts power when voltage drops, safeguarding your investment and avoiding costly breakdowns. Build your own system and enjoy peace of mind.... [read more]

Build your dream audio amplifier and unlock exceptional sound quality. This detailed schematic, featuring 3 components, provides a solid foundation for headphone amplification, with a crucial R3 adjustment for optimal performance with 32 to 600 Ohm headphones. Discover how a simple upgrade to a 3.7V Lithium-Ion battery dramatically boosts power and extends playtime, transforming your listening experience.... [read more]