Discussion in 'Article Discussion' started by WilHarris, 29 Apr 2005.
Brilliant Been looking for an electronics guide to suite my n00biness and this fits perfectly. Bring on Pt2!
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,
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.
Great to see an electronics guide on bit-tech at long last Good job, Acrimonious; I look forward to reading part two
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
Looks very useful, will stay tuned for part 2!
Good beginners guide, I cant wait for the section on Thevenin and Nortons theorems
A modding article for a change
Very well written, if i 'twas a noob id understand that well!
Certainly easier than Q= 1/2CV^2 or other pants like that.
at last a beginners guide that i can understand.looking forward to part 2
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.
You wouldn't really use them in basic practical modding electronics
rough guess here (a guess, mind you)
hes being sarcastic/joking...
Nice one acrim.
Off Topic: Interesting how the New Zealander understood the sarcasm and the aussie didnt. Read into it what you will
ye, thats a really good guide for noobss like me
Last time I checked, current was a flow of positive charge, not of electrons.
In the majority of cases, current flowing through solid metals, or graphite, etc, the sole charge carriers are electrons.
That still doesn't change the fact that current is the measure of postive charge flow.
Yeah, you're talking about 'conventional current', which is one of the Stupidest Things Ever.
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.
Separate names with a comma.