5V regulated powersupply

5V regulated powersupply

7805 Pinout

this circuit is based on the common and well known 7805 voltage regulator the 7805 can supply requlated +5V supply and 1A current, most digital circuits need +5V regulated supply so this circuit is ideal. the input to this circuit must be atleast +7V to get +5V out, this circuit will not work if you put 5V,6V, to input because these 78XX requires 2V greater voltage than output voltage, for example : you have a 6V powersupply and want to get 5V out of it and you want to use 7805 for this purpose! But you will not make it possible!! Because it needs 7V input to output 5V. u can input upto 30-35V in input pin and you will get regulated +5V output.

The last two digits indicate the output value. As an example 78″05” indicates that it can output max 5V and “7808” can output max 8V And “7812” can output max 12V. And capacitor value depends on the voltage you give to input, You must use 25V capacitor in input if you want to input +12V, and always choose the value(voltage rating) of capacitors greater than input voltage. You can directly replace 7805 with any 78XX Series iCs but input voltage should be greater according to the value of output.


About Ztronn

hellooo i'm lsid ,i am a DIY (do it yourself) stuff loving kinda guy, i mean i love to build things and posting it on my blogs for the world to see. i love reading about technology and innovation. i love the nature,mysteries of space and of course God. no aliens. kindly let me know what you think about my simple innovations in the comments.
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6 Responses to 5V regulated powersupply

  1. ali says:

    hi just i want do my project power supply 5v can i have some information ?thks

  2. dg4666 says:


  3. ADMIN says:

    thanx for pointing out the errors mitchell, schematic has been updated

  4. The circuit needs 100n on input and output to prevent high frequency oscillation

  5. The electrolytic symbols are up-side-down.

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