Please, enjoy our completely free circuit diagrams and electronics projects database!
Here are some of over 800 projects from our free circuit diagrams database. For more, try browsing categories menu on the left.
Build a robust 15V DC power supply circuit with a peak current of 1A, utilizing a 2N3055 transistor and a standard 220V/18V transformer. This simple yet effective design provides a stable and reliable power source for your electronics projects, perfect for inspiring innovation....
[read more]
Unlock exceptional audio fidelity with this high-performance headphone amplifier, delivering up to 200mW power and pristine sound quality for your favorite headphones....
[read more]
Build a smart USB switching circuit that seamlessly alternates between your PC and laptop for effortless printer access. This innovative design automatically switches the USB connection, eliminating the need for manual unplugging and re-plugging – perfect for maximizing productivity and streamlining your workflow....
[read more]
Build automated lighting systems with 78xx voltage regulators and control light levels with an LDR for smart and efficient home lighting solutions....
[read more]
Build versatile timers with up to 24-hour durations, offering precise control and repeatable or single-shot timing capabilities. Master the 14-bit CMOS 4060 timer design and unlock powerful timing solutions for your projects....
[read more]
Build powerful voltage and current regulator circuits using the L200 IC. Explore two innovative schematics – one for high current regulation with adjustable outputs and another for programmable voltage and current control. Unlock limitless design possibilities with these essential building blocks....
[read more]