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Electronics guide part 1

Discussion in 'Article Discussion' started by WilHarris, 29 Apr 2005.

  1. WilHarris

    WilHarris Just another nobody Moderator

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  2. <A88>

    <A88> Trust the Computer

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    Brilliant :thumb: Been looking for an electronics guide to suite my n00biness and this fits perfectly. Bring on Pt2!

    <A88>
     
  3. g0th

    g0th New Member

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    Great stuff.

    I would like to make a couple of suggestions.

    When calculating resistors for LED use, remember to work out the power dissipation in the resistor and choose a resistor that can handle it.

    This is almost never a problem for 1 or 2 LED's, but put a heap of LED's in parallel and you can start burning resistors.

    Because LED's are a PN junction device, the potential across them is fixed, provided the supply voltage is at least the forward voltage. This is what makes it possible to choose a resistor to limit the current from a suitable value.

    Feel free to take or paraphrase material from here,

    http://forums.bit-tech.net/showthread.php?t=88511

    But if you do this i would like to be credited in the article.

    I'd be happy to make suggestions / comments / help write future parts.
     
  4. RotoSequence

    RotoSequence Lazy Lurker

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    Great to see an electronics guide on bit-tech at long last :thumb: Good job, Acrimonious; I look forward to reading part two :D
     
  5. Zidane

    Zidane New Member

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    cool first part, makes a lot of sense. hopefully this will stop me posting "help, im a n00b!" posts int he electronics forum... ;)

    eagerly looking forward to the full series, and creating some cool stuff to make my cases a little more whizz-bang
     
  6. Nath

    Nath Your appeal has already been filed.

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    Looks very useful, will stay tuned for part 2! :D
     
  7. Hippo

    Hippo Pre-dates 5.25" Floppies

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    Good beginners guide, I cant wait for the section on Thevenin and Nortons theorems :D
     
  8. Fatboy

    Fatboy Bored

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    WooooO00o0o0o0o0o0 yay.

    A modding article for a change :thumb:

    Very well written, if i 'twas a noob id understand that well!

    Certainly easier than Q= 1/2CV^2 or other pants like that.
     
  9. mannafig

    mannafig Member

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    at last a beginners guide that i can understand.looking forward to part 2 :thumb:
     
  10. Alwayz Dead

    Alwayz Dead New Member

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    Great stuff :clap:
    I'm not the most prolific poster but I use BitTech as a source of reference a great deal and this addtion makes it only more useful.

    Nice one :thumb:
     
  11. g0th

    g0th New Member

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    You wouldn't really use them in basic practical modding electronics
     
  12. Etacovda

    Etacovda New Member

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    rough guess here (a guess, mind you)

    hes being sarcastic/joking...
     
  13. Sc0rian

    Sc0rian Here comes the farmer

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    sweet.

    Nice one acrim.

    - S
     
  14. Hippo

    Hippo Pre-dates 5.25" Floppies

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    Off Topic: Interesting how the New Zealander understood the sarcasm and the aussie didnt. Read into it what you will :hehe:
     
  15. gmail

    gmail New Member

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    ye, thats a really good guide for noobss like me :D :D
     
  16. nleahcim

    nleahcim New Member

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    Last time I checked, current was a flow of positive charge, not of electrons.
     
  17. g0th

    g0th New Member

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    In the majority of cases, current flowing through solid metals, or graphite, etc, the sole charge carriers are electrons.
     
    Last edited: 3 May 2005
  18. nleahcim

    nleahcim New Member

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    Correct.

    That still doesn't change the fact that current is the measure of postive charge flow.
     
  19. g0th

    g0th New Member

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    Yeah, you're talking about 'conventional current', which is one of the Stupidest Things Ever.
     
  20. acrimonious

    acrimonious Custom User Title:

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    Thanks for taking an interest.

    I see where you're coming from - but positive charge arises due to electrons flowing in the opposite direction. The more electrons flow, the greater the 'positive charge flow' and so the greater the current.

    In some respects I am wrong to say that electricity comes about due to electrons as electricity can arise due to proton flow in liquid metals - however I'm just going to be working with Molexs, not mecury, so for the first part of the guide at least, I think this level of understanding is far more than enough. :thumb:
     
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