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Voltage Regulation Circuit

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imranahmed

imranahmed

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Please let me know that there is any circuit or IC for 220v input and output constant 5 volts or adjustable output.
 

Please let me know that there is any circuit or IC for 220v input and output constant 5 volts or adjustable output.
Click to expand...

Hi imranahmed

Of course there are ! but it depends on how much current you need ?



Best Wishes
Goldsmith
 

Dear goldsmith,

Thank you for reply,

I need only 1 amps current.

If there is any please refer me.
 

You could try capacitor voltage transformer and then use the very popular 7805 series voltage regulator or any other DC-DC voltage regulator.

If you need a high efficiency then DC-DC Buck converter is what you need
 
Dear imran_199127

I know about 7805 and its input voltage is max=12v but I need voltage regulator its input voltage is 220v and output is constant 5v or regulated.
 

I presume 220V refers to 220V AC? In this case the most reliable and easy-to-make circuit is comprised of a transformer, rectifier, filter capacitor and voltage regulator IC. It has been discussed many hundred times at Edaboard.
 
Dear goldsmith,

Thank you for reply,

I need only 1 amps current.

If there is any please refer me.
Click to expand...
Hi again
Directly ? 1 ampere ? just one linear IC ? it can be implemented but dissipation is unreasonable for this power .
There are some ways . as "FvM" mentioned transformer and .... is much reasonable here .
There are other ways too e.g using tops integrated circuits and designing and SMPS based on them but i think that's out of your experience and it will cost you more that a simple transformer and rectifier .
Good Luck
Goldsmith
 

Create a free account with TI and logon to save your designs. Analog Devices also has online design tools.

Here is one example from AC to 5V 2A DC

ti.jpg
 
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