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Thread: 8051 power supply

  1. #1

    Default 8051 power supply

    guys i am completely new to 8051, i want yu to help me out with th power supply circuitary.

  2. #2
    Senior Member T-1000 debu's Avatar
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    @nischo: Welcome to Robotics India!!

    You should use a 7805 based regulated power supply for your 8051. The circuit should be like:



    Regards,

    Debu

  3. #3
    Super Moderator T-1000 docel's Avatar
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    The correct terminal by-pass capacitors for 7805 should be:
    C1= 0.33uFd. + 100uFd
    C2= 1uFd tantalum
    C3= 0.01uFd (10nFd)
    C4= 0.1uFd (100nFd)

    The Vpp MUST be >8VDC
    docel
    ^Anything is possible..
    after YOU prove it!!

    http://bangalorerobotics.tripod.com

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  5. #5
    Senior Member T-1000 akshay66's Avatar
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    Hi all,
    For 8051 you actually need 5v.Try this power supply this gives both 5v & 12v & if you don't want 12v then remove 12v part.Here is the circuit

    Redefine it your way!!!!

  6. #6

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    thanx akshay u solved my problem also

  7. #7

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    You should check out the capacitor values provided by docel

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