|Abstract:This research paper presents the complete modelling and simulation of single phase step-down cycloconverter. Basically single phase cycloconverter generates double, triple and fourth times of the output frequency. A Cycloconverter is a device that converts AC, power at one frequency into AC power of an adjustable but lower frequency without any direct current, or DC, stage in between. It can also be considered as a static frequency changer and typically contains silicon-controlled rectifiers. The FFT analysis of output current waveform has also been discussed in this paper.