Power Supply is the power supply for electronics circuits. The main function of the power supply circuit is to change the AC voltage to the required DC voltage. Currently known two power supply systems, namely:
Conventional system with step down transformer 50Hz and diode and elco rectifier circuit.
The switching system known as SMPS (Switching Mode Power Supply)
Conventional Power Supply
In a conventional power supply, the AC voltage is first lowered through a step down transformer and the transformer output is rectified with a diode and flattened with an electrolytic capacitor (elco). For more information about Power Supply System and how it does work you can Click here.
Diode rectifier system there are 3 kinds, namely:
The half-wave rectifier system uses one diode to rectify the AC signal. In this case the diode only passes half of the waveform while the other half wave is not used. So this half-wave rectifier system is not efficient for power transfer.
Full wave rectifier CT system
The full-wave rectifier system means taking all parts of the AC signal to be rectified. In a full-wave rectifier CT system it takes one more coil of wire to be arranged in reverse from the first coil.
The meeting between the first coil and the second coil is called the CT (Center Tap). The CT point is then the voltage reference point (zero).
Full wave rectifier bridge system (bridge)
The principle of full wave rectifier bridge system is almost the same from the CT system that is aimed at skipping all parts of the AC signal. But the bridge system rectifier requires only one coil. To take the upper and lower AC signal phases four diodes are used alternately when the AC signal swings at the top and bottom position.