Hi ramussons, thanks for your comment... My Aim is to make up a power supply that have an output voltage regulator
of about 5, 9 ,12 volt.
Base on my knowledge in Electronics, am an amateur. Have gone through Basic introduction on electronics all alone with no guardians, am just putting things in practice.
I have here Full image of the schematics. The last image i posted was the secondary side of the schematic. i just update some component to my component library like Voltage Regulator L7805CV, LM7809AC, L7812CV and also a component of 'programmable shunt regulator (KA431)'. Then, the 3 switch mode power rectifier was representing those voltage regulators. Along side, A chopper transformer which I isolated from a board ('19v'chopper trans.)
Then, I got the Mosfet 'IRF540' Drived by an integrated circuit 'UC3842AN'. Also, I added an optocoupler to regulate the secondary voltage... Am just working on what resistor value will be along also the capacitor and all other component present in the schematic.
Please I really need your Opinion so that to know where am Right or wrong....