@Chickenpoper You are actually referring to the flow of electrons, on this level of electrical engineering it is unnecessary, It's called conventional current.
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 !
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 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.)
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.
This has been flagged as spam show
/watch?v=eO1znZyYxVY&feature=youtu.be check this video
moto123cross 1 month ago
@Chickenpoper You are actually referring to the flow of electrons, on this level of electrical engineering it is unnecessary, It's called conventional current.
TheGreensmith 1 month ago
Comment removed
BADprid3 5 months ago
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 !
RagtimeAnnie 9 months ago
I gotta question....how many questions for 12 leds in series?
brent52 11 months ago
LED calculator? gotta love internet. :))))
icanswim23 11 months ago
Excellent tutorial; good pace and thorough. Thanks very much!
Would also love to see the parallel one.
onnovanbraam 1 year ago
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 1 year ago 5
@DanMYankees Well the electrons themselves flow from negative to positive, but the "difference" or what have you "moves" from positive to negative.
Ichvyenichalster 8 months ago
@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
chickenpoper 1 month ago
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))
rouelibre1 1 year ago
im only looking because im doing my homework lol but i cant find what im looking for :(
Origamigirl11 1 year ago
that was actually VERY helpful. Thank you!
epohnopulse 1 year ago
I don't understand how you used the AC adapter here as most commercially available adapters have pins at the ends.
bigtig4life 1 year ago
very helpful vid. wheres your vid on wiring parallel?
raydog3181 1 year ago
great help with this video. cant find your video on wiring parallel.
raydog3181 1 year ago
what would change if you used a 9v battery and 20 L.E.D.s
TheTurtlesosa 1 year ago
@TheTurtlesosa they would use the 9v up quicker and you would need a different resistor.
OneClickReviews 1 year ago
@OneClickReviews no need to use a resistor as the leds are already in low voltage in a series connection....
CrimelabS 4 months ago
when u gunna make parrel vid
gangsterpimp69 1 year ago
@gangsterpimp69 very soon, thanks for watching :D
OneClickReviews 1 year ago
@OneClickReviews im still waiting for the parallel one haha
caquillo07 1 year ago
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.
afcweswarrior 1 year ago
thanks subbed
scrogathon 1 year ago
thank you :D
OneClickReviews 1 year ago
NIce video, very helpful
boxfishaquatics 2 years ago
thanks
OneClickReviews 1 year ago