Bldc motors require an electronic circuitry to operate. almost all of them are either costly or prone to damage in challenging conditions. this project involves reverse engineering of a bldc fan and its analysis. the two major reason for their failure is voltage variation and h-bridge short circuiting. circuits available to rectify these problems are complicated and very costly. the project offers solution through a novel hybrid or linear regulators and a drive circuit which is simple and economical. a novel isolation method using wein's bridge oscillator has been developed to replace the costly dc isolation ics.