12+ Dual Power Supply Circuit Pcb Pictures. In this circuit, we are not building a power supply from scratch. Converting 220v ac into 12v ac using step down transformer.

ESHION 12V3A5V3A 50W Dual Output Switch Mode Power Supply ... from ae01.alicdn.com

The regulator circuit is performed by a pair of 79xx 78xx (xx = 12 to 24), if the current requirement does not exceed 200 ma, the heatsink is not needed here (but available in the printed circuit board). It is important to give dual power supply, when we work with operational amplifier or analog to digital convertison circuit. A basic power supply circuit will fundamentally require three main components for providing the intended results.

A printed circuit board (pcb) mechanically supports and electrically connects electrical or electronic components using conductive tracks.

Designing a simple dual power supply actually involves a just a center tap power supply and a bridge rectifier along with a couple of high value filter capacitors as shown below To do this we need the dual supply. Circuit has on the primary side only fuse. The regulator circuit is performed by a pair of 79xx 78xx (xx = 12 to 24), if the current requirement does not exceed 200 ma, the heatsink is not needed here (but available in the printed circuit board).