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  1. B

    LED fixture build help

    How much safer is a driver vs the resistor with DC power adapter?
  2. B

    LED fixture build help

    Ding. Got it. Thank you very much
  3. B

    LED fixture build help

    Right, but the resistor was calculated to make up for the extra voltage coming from the LEDs...how does that coorespond to the forward current for the LEDs? I guess I just don't understand how it lowers to the 650ma and makes up for the extra voltage.
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    LED fixture build help

    Would it be safer to out the DC power supply w/ resistor and use a Meanwell driver? Constant current of 700ma and 9-48v
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    LED fixture build help

    Okay, I understand. You take the sum of the LEDs and subtract from supply voltage to get the left over voltage, which is what the resistor needs to limit. But what about current? Does it matter whether I use a 2amp or a 4amp power supply? If the diodes have a forward current of 650ma, and I...
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    LED fixture build help

    Hello! I am currently building an LED fixture for my 5 gallon saltwater fish tank. I have experience in electronics, but engineering something is a little new to me. I have 6 leds, each has a max voltage of 3.4v and I want them run at 650mah. The supply voltage is a DC power adapter of 24v at...
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