Introduction

I am delighted to present my meticulously crafted DC to AC inverter, designed entirely from scratch, with the primary objective of powering a 10W LED table lamp. The foundation of this project was laid through a comprehensive understanding of the theoretical concepts acquired during my coursework and extensive research on the internet.

The development process encompassed thorough exploration of various datasheets for key components, supplemented by in-depth readings of online articles. To ensure the viability of the design, I engaged in rigorous simulations using TINA TI, fine-tuning the circuit to meet the specific requirements of the 10W LED table lamp.

Practical implementation took shape on a breadboard, where critical components underwent meticulous testing using an oscilloscope. Notably, the variable oscillator circuit, ingeniously devised utilizing a 555 Timer, underwent particular scrutiny to guarantee optimal functionality.

Following successful breadboard testing, the circuit transitioned to a perfboard, where it was soldered with precision. Subsequent trials involved connecting the circuit to a 12V lead acid battery, powering the designated 10W LED table lamp. Notably, an automatic battery charging circuit was seamlessly integrated into the design. Leveraging AC to DC converter modules and the DD30CRTA—a PWM switch-mode battery charger controller—the system exhibited intelligent charging capabilities.

Furthermore, a relay mechanism was strategically incorporated to facilitate seamless switching between mains power and inverter-based supply, contingent upon the availability of mains power. This feature ensures uninterrupted functionality and optimal efficiency in various operating conditions.

In culmination, my designs had some limitations but were ultimately successful in powering the 10W LED table lamp. The experience I gained through this project was invaluable, and I look forward to applying my newfound knowledge to future projects.