How to make USB LED LAMP

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Uploaded by on Dec 13, 2010

English:
~~How to make USB LED LAMP~~
need:
7 LEDs (5mm 3v 20 mA)
USB Cable
Resistor ~ 200Ω
Variable Resistor - Potentiometer ~ 5kΩ
Switch

Srpski:
~~Lampa na USB~~
treba vam:
7 LED dioda (5mm 3v 20mA)
USB kabl
Otpornik ~ 200Ω
Potenciometar ~ 5kΩ
Prekidac

Category:

Howto & Style

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Standard YouTube License

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Uploader Comments (goodpaste)

  • It is wrong. First of all current is to weak for such number or leds. Second it is a wrong way to regulate diod, it can be demaged. Diods light intensity should be regulated through impulsive current module.

    In short way, it is amateur work.

  • @zhymka however this works...

  • Are those 3V LEDs?

  • @JotaLegendOfficial Yes , read desc....

  • @goodpaste yeah, I kindda rushed.. Thanks! nice vid..

  • @JotaLegendOfficial np , thnaks ;) check my other videos ;) SUB :D

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All Comments (17)

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  • Is there a way to avoid using resistors ? (in order to use 5Volt LED diodes)

  • @zhymka USB specs state this port can deliver up to 500mA at 5 volts. This configuration with 7 LEDs is probably drawing between 130mA to 160mA. And that's a generous estimate. Using a 200 Ohms resistor I can't see the LEDs receiving 20mA but more in the range of 10mA.

    Kind of brazen of you to call this amateur work and you write such an amateur comment.

  • @Roh1290 from the wiring diagram in the video it appears to be parallel. with 5 volts from USB port and the use of white LEDs it almost has to be a parallel configuration. white LEDs typically require at least 3 volts.

  • i made the same with a batterie charger and mine is blinking ;D

  • dude thanks for your video , Dude tell me 1 thing weather u have connected the LED in series or parallel that's the only doubt i had

  • @goodpaste OKey! be sure to check out mine also.. I think you might like them...

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