Thursday 12 November 2015

power supply - how to increase current in this given circuit


I am am a beginner to this not having background from this feild n i I have a transformer less circuit which gives out 12vdc and 30 mamp how to increase the current to 2 amp enter image description here



Answer



First, and most important, this circuit is not safe. A mistake putting it together can kill you or someone else. Do not use it for anything.


It definitely will not work well at 2 amps. Zener diode regulators work by converting the extra current capacity of the power supply to heat. 2 amps at 12 volts is a huge amount of power to waste.


Passerby's answer is the right one. Buy an AC-DC converter. Don't try to build your own if you don't have the knowledge.



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