Design and Construction of 500 Watt PWM DC/AC 220V Power Inverter
Ogunsona Damilola Adesoga, Giwa Abdulgafar Babatunde, Familusi Timothy Oluwafemi · Zenodo (CERN European Organization for Nuclear Research) · 2021
A 500 watt PWM DC/AC 220V Power Inverter which is designed to converts direct current DC to alternating current AC with the use of a transformer, switching and control circuit was designed and constructed using SG3524 which is an integrated switching regulator circuit that has all essential circuitry required for making a switching regulator in single-ended or push-pull mode. The built-in circuitries inside the SG3524 include pulse width modulator, oscillator, voltage reference, error amplifier, overload protection circuit, output drivers, etc. which processed the DC signal into AC signal and later sent the current signal into a driver transistor BC558. Acting as class B voltage amplifier, the resulting signal was further amplified using four MOSFET transistors mounted on a heat sink. The resulting alternating voltage to which a 12Vd.c is superimposed was fed into the middle of the primary coil of 500watt transformer windings producing alternating current AC in the secondary wind 220V AC.