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  1. X

    Basic voltage drop question

    OK, I have replaced the fuse and I am now able to measure mAs too (thanks for the idea). Here are the results, and what I am going to use: Power supply: 4.5 V (3xAAA) 3 Ultrabright 3.6 V (manufacturer spec.)leds connected in parallel 1 68 Ohm resistor (placed it between the battery and the plus...
  2. X

    Basic voltage drop question

    Thank you for your answers. Ill check that fuse. As for [ QUOTE ] Doug Owen said: For sure you didn't "the current across the LED and I got to 3.0 volts.".....Doug Owen [/ QUOTE ] I just put the DMM to volts and then the + and minus directly to the LED terminals. Isnt that the current the LED...
  3. X

    Basic voltage drop question

    OK, Im trying to go by the saying that the only stupid question is the one not being asked here...so please bear with me here. I want to use ultrabright leds to make a flashlight. I was trying my hand with just one led and I wonder at the results: Power supply: 3 AA batteries. Measured...

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