If you don't know Ohms Law, then you are missing out! ll What is Ohms Law?

Ohms Law is an incredible tool for anyone doing anything with electronics. This video covers the basics to get you started.

- Schematix -

[TMRu]

New Zealand accent + Useful Information + Comic relief = Awesomeness!!!! I love these videos :D

[BenMitro]

Excellent tute - thanks. In the LED example, It might be worthwhile to point out the power that will be dissipated in the resistor (0.4W), and so choose the right power rated resistor (I think you used a 0.5W). Perhaps a video on sizing components for power dissipation and heat sinking?

[paulgreenlee]

You pointing me in the right direction once again, this is all new to me but your video is short and to the point so watching it a few more times will help me learn Ohms Law, thanks

[derofromdown-under]

Excellent presentation once again... WELL DONE!!! 10/10

[Viddiecent]

Always a super handy video Amon Cheer's mate :D as always filling those gaps in my knowledge.

[FEMADEATHCAMPCONTROL]

I agree, electrodroid is a great app!!! Easily my favorite of those type of calculators.

[nzoomed]

Electronics assistant from electronics2000 is also useful for microsoft windows.

[ifell]

Unit converter from wopnersoft is good too!!

[MrBrymstond]

I use a different method say I'm using 5v and the LED is 3v, it draws 0.02amp. I deduct 3v from the 5v source leaving 2v divided by the 0.02amp it draws = 100ohm but where did you get that buck converter please? what's its rating and do you have a link? Thanks

[DAVIDGREGORYKERR]

can you not use a OP-Amp and use a detector diode to produce a voltage dependent on the brightness of the LED to prevent the diode from burning out it is actually the circuit that prevents a LASER Diode from burning out.

[rondlh]

You could measure the resistance of the light... did Ohm get it wrong this time?

[alext]

Interesting that you didn't just use the formula by hand. E=IR. Are we assuming ( and it's a damn good assumption) that people can't sort out that formula? BTW, Ohm's law is not a law. It's the definition of resistance. It was made up to tell you what an ohm is. Side note for dummies like me. When moving variables across the = sign, stuff that's on top goes to the bottom when making the move. E=IR, I=E/R, R=E/I, and so on. I was surprised to see that my little niece had been struggling with complicated methods until her uncle cleared up the confusion. She's now a nuclear scientist...not. But she passed her course.