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Topic: Basic electronics (Read 824 times) previous topic - next topic

Xirzonas

Hello,

I'm completely new to electronics, and I'd like to understand how some basic electronics work like voltages and resistors etc. does anyone know a good tutorial that covers this all for 'noobs'?

Thanks in advance!:)

JimboZA

Hi....

I think this is a good site.

Jim
Johannesburg hams call me: ZS6JMB on Highveld rep 145.7875 (-600 & 88.5 tone)
Dr Perry Cox: "Help me to help you, help me to help you...."
Your answer may already be here: https://forum.arduino.cc/index.php?topic=384198.0

cjdelphi


Hello,

I'm completely new to electronics, and I'd like to understand how some basic electronics work like voltages and resistors etc. does anyone know a good tutorial that covers this all for 'noobs'?

Thanks in advance!:)


There is no "one covers all" there's so much to learn... I suggest you pick an area of interest first then work towards your goal, but to kick start you off, ohms law get your head around voltage, current,  resistance, then you'll find that electronics is a lot easier to learn.

Xirzonas

Thank you! I did read a lot about ohms law already and I understand how it works, but I got another question. How do I know what the maximum mA of (for example) a LED are?

cjdelphi


Thank you! I did read a lot about ohms law already and I understand how it works, but I got another question. How do I know what the maximum mA of (for example) a LED are?


First you consult the led's datasheet, it may say max current 40ma but typically 20ma.

Vcc - led's vf  / 0.02
= Resistors value  for led. (Ohms law)


AndyCC

#5
Jun 27, 2014, 12:39 am Last Edit: Jun 27, 2014, 12:44 am by AndyCC Reason: 1
I really enjoyed Platt's "Encyclopedia of Electronic Components" for basic information about what parts do what.

http://www.amazon.com/Encyclopedia-Electronic-Components-Volume-Transistors/dp/1449333893 - so far he's got Volume 1 out, but is delayed on Volume 2.

Another of Charles Platt's books, "Make: Electronics"  (http://www.amazon.com/Make-Electronics-Discovery-Charles-Platt/dp/0596153740/ref=sr_1_1?s=books&ie=UTF8&qid=1403822463&sr=1-1&keywords=platt+electronics) wasn't a bad intro to basic theory and practice.

larryd

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fungus


How do I know what the maximum mA of (for example) a LED are?


You look in the datasheet that goes with it.
No, I don't answer questions sent in private messages (but I do accept thank-you notes...)

JimboZA



How do I know what the maximum mA of (for example) a LED are?


You look in the datasheet that goes with it.



.... except that most of the time LEDs have no provenance, in which case the table half way down this page may help.
Johannesburg hams call me: ZS6JMB on Highveld rep 145.7875 (-600 & 88.5 tone)
Dr Perry Cox: "Help me to help you, help me to help you...."
Your answer may already be here: https://forum.arduino.cc/index.php?topic=384198.0

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