Transformerless 12v Dc Power Supply Circuit

Please i am having this issues with transformerless power supply.

Transformerless 12v dc power supply circuit.

Low voltage dc like 5v 6v 9v 12v is used in electronics circuits led bulbs toys and many household electronics items generally batteries are used to power them but they need to be replaced time to time which is not cost effective and also takes our time energy. Resistive type power supply on the other hand dissipates more heat so the power loss is quite high. C1 is the x rated ac capacitor that reduces high volt ac. The main component of a transformerless power supply circuit is a voltage dropping capacitor or x rated capacitor which is specially designed for ac lines.

A transformerless power supply basically translates a high voltage ac into a desirable dc voltage without the use of a transformer. Before designing a transformerless power supply some facts about ac dropping through a capacitor or resistor are to be considered. If a circuit requires very low current of a few milliamperes transformerless power supply is an ideal solution. D1 d4 rectifies ac to dc and c2 removes ripples.

This is a transformerless power supply for low current applications. R1 is the bleeder to remove stored current in ac when power is off. R2 limits inrush current. Transformerless power supply circuit diy project syed saad hasan 1 354 views 3 months ago designing efficient power supplies are a major concern of today s electronics as one of the main issues in modern day electronics is to efficiently generate low voltage dc from an ac source such as a wall outlet to power any circuit.