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Thread: How is this for a Supply....

  1. #21
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    moahdib's Avatar
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    $4 a week? LOL how about we set up a paypal donation site for your posting efforts in this board hehe just kidding...
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  2. #22
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    just kidding???
    Why not for real????
    I am willing....

  3. #23
    Maximum Bitrate Raas's Avatar
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    ... Sigh......
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  4. #24
    Raw Wave Rob Withey's Avatar
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    Originally posted by THE_SKINNY_MP3_KID:
    <STRONG>The five volts WOULD work it is only 25-35watts MAX, not 100, where did you get that number from....
    </STRONG>
    The 100 Watts or so comes from the 12A supply that this circuit was posted to provide in the first place (see first post). The maths is explained in my previous post (Power = VoltsDropped * AmpsSupplied for a linear regulator). Obviously for less current to be supplied, the power dissipation will be less. 35 Watts dissipation will get you about 3.7 Amps (again, assuming 14.4 running voltage, this is given by 35/(14.4-5) = 3.72Amps).

    And yes, I am a graduate who did electronics in my degree course (as well as software engineering).
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  5. #25
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    so, I can use it for 5volts, supplying 3-4amps, which is all my carputer draws on the 5volts....


    it won't work for 12 though....

  6. #26
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    Originally posted by THE_SKINNY_MP3_KID:
    <STRONG>Do you know how much sproggys power supply would cost to make??
    Like, I have $0 in my wallet, and about $18 in the bank...
    now tell me, HOW CAN I AFFORD IT!!!!!!!!!
    </STRONG>
    start off with not making all kinds of circuits that other people say that dont work for starters.
    it will save you loads of cash.
    thought you were so good with your 5 years of experiance and your dad being an electronics endgineer ?
    havent seen one decent power suplly from you yet .
    time for the sig:

    '00 VW golf TDI upped to 130 HP - 18" RS 6 wheels - liliput 7" tft in indash housing - epia 10K - SB audigy - caliber 1 fahrad CAP - RF punch amp - hollywood 1.6K mono amp - boston acoustics pro - RF 10" DVD sub

  7. #27
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    start off with not making all kinds of circuits that other people say that dont work for starters.
    it will save you loads of cash.
    thought you were so good with your 5 years of experiance and your dad being an electronics endgineer ?
    havent seen one decent power suplly from you yet .
    That is actually quite a mean thing to say, this circuit will work for 5volts, if you only draw 3-4amps, which is what has been stated earlier....
    and seeing I will be drawing less than 3amps, this circuit is fine for me...





    [ 07-18-2001: Message edited by: THE_SKINNY_MP3_KID ]

  8. #28
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    Well, I have not made this supply, and am now testing it, I will try it with a 5amp load, and see how warm, not hot, it gets....


    [ 07-18-2001: Message edited by: THE_SKINNY_MP3_KID ]

  9. #29
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    I put a 6volt, 4amp globe on the power supply, and connected it to a switchmode supply, and turned it on, the switchmode supply made a high pictched wistle, and a buzz, which it normally doesn't do, I think the load of about 6.5amps was too much, even though the switchmode is rated at 12amps..
    Anyway, the transistor got WARM, and the heatsink remains cool aroung the edges..

    okay??
    you like my signature?

  10. #30
    Retired Admin Aaron Cake's Avatar
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    Red face

    You know what? I'm not even going to bother. It's just not worth my time.

    You don't seem to get the difference between current draw, power draw, and power dissipation. They are different, and it does matter.

    I am through with this thread, and any other thread involving THE_SKINNY_MP3_KID.
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