Added: 2 years ago
From: OneClickReviews
Views: 26,532
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  • @Chickenpoper You are actually referring to the flow of electrons, on this level of electrical engineering it is unnecessary, It's called conventional current.

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  • Hey ! I read a few text based tutorials before I stumbled on your video. For some reason, yours seemed so much easier to understand! Great work, and THANKS !

  • I gotta question....how many questions for 12 leds in series?

  • LED calculator? gotta love internet. :))))

  • Excellent tutorial; good pace and thorough. Thanks very much!

    Would also love to see the parallel one.

  • always, always, ALWAYS put the resistor infront of the positive side of the LED. The Power always flows from positive to negative and restiting and reducing the current so it doesn't short out anything is useless if the power is being lowered after it has already passed the destination. You cut the lifetime of the LED dramatically if you don't follow proper procedure (5 years of lighting experience and training)

  • @DanMYankees Well the electrons themselves flow from negative to positive, but the "difference" or what have you "moves" from positive to negative.

  • @DanMYankees First of all your wrong, current flows from negative to positive. You just think other wise because of how all many institutes still use the idea of "conventional current" to avoid confusion between old and new engineers etc.)

    And don't fight with me, i know i am right 100%.

    mi.mun(dot)ca/users/cchaulk/el­tk1100/ivse/ivse.htm

  • Very interresting. You serie 3 LED's @ 3,5V and a 100R resistor at 15mA. That gives a voltage drop of 12V and power dissipation of 180mW. That is fine, but...

    LED's have some bulk resistance and it has to be taken into account. A 91R could have been closer to your desing goal.

    At 15mA, if your wall-wart was rated for 300mA, it will hardly colapse under load and produce more voltage. Here, a 150R would have been a better choice.

    Always use a multimeter. You can't guess... :O))

  • im only looking because im doing my homework lol but i cant find what im looking for :(

  • that was actually VERY helpful. Thank you!

  • I don't understand how you used the AC adapter here as most commercially available adapters have pins at the ends.

  • very helpful vid. wheres your vid on wiring parallel?

  • great help with this video. cant find your video on wiring parallel.

  • what would change if you used a 9v battery and 20 L.E.D.s

  • @TheTurtlesosa they would use the 9v up quicker and you would need a different resistor.

  • @OneClickReviews no need to use a resistor as the leds are already in low voltage in a series connection....

  • when u gunna make parrel vid

  • @gangsterpimp69 very soon, thanks for watching :D

  • @OneClickReviews im still waiting for the parallel one haha

  • Awesome, would it be the same, say you were building a series circuit with 3 light bulbs (6V, 100mA) with a power supply set to 12 V DC.

  • thanks subbed

  • thank you :D

  • NIce video, very helpful

  • thanks

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