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  • Variable dc power supply 0-12Volts (1A or less)

    Ibe

    Member

    Updated: Oct 25, 2024
    Views: 968
    my power supply just broke and I want to build my own power supply which can be adjusted by a potentiometer that outputs 0-12Volts and a current of 1A or below. can anyone give me a schematic diagram?? thanks.
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Replies

  • arunchary

    Member • Feb 27, 2013

    hi, use Lm7812 and use 1Amp fuse in following circuit
    <a href="https://www.dropbox.com/s/st2svxj3urasspw/variable-power-supply-using-7805.PNG" target="_blank" rel="nofollow noopener noreferrer">Dropbox - variable-power-supply-using-7805.PNG - Simplify your life</a>
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  • Ibe

    Member • Feb 27, 2013

    is it okay if I will be using 220V AC? because it is the standard here in the philippines
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  • arunchary

    Member • Feb 27, 2013

    yes, You can use this circuit because,in this circuit we have bridge configuration as follows in the circuit...............no issues....
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  • Ibe

    Member • Mar 3, 2013

    arunchary
    yes, You can use this circuit because,in this circuit we have bridge configuration as follows in the circuit...............no issues....
    big thanks sir!
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  • Ibe

    Member • Mar 3, 2013

    okay, what diode should I use on the bridge rectifier?
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  • arunchary

    Member • Mar 3, 2013

    hi, you can use the diode 1n4007 or ready made bridge IC's are available like W10 so, you can replace with them also//...
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