It's not that there is conflicting info it's that people just like to guess at stuff and have no real idea what they are doing. First you need to know the forward voltage on the leds. No, that is not going to easy to find as you don't know the part numbers. Then you string the leds in series with a known voltage. Just because a power supply says its 7 volts does not mean that is what you have. In every case it's something else ( i.e. 6.4v ). Then you need to find the current the leds are pulling and use a resister to monitor the impedance. All leds will need a resistor or in time they blow. Some leds have resistors build in but you won't find that in cheep stuff. Again you need to know the tolerance of the leds so you don't have too much current flow. Give only the right amount of total current and watch the forward voltage.
Now if that makes sense to you, your are ready to begin. If it does not you will eventually burn something up. This is why us electric engineers get paid the big bucks LOL.
Now if that makes sense to you, your are ready to begin. If it does not you will eventually burn something up. This is why us electric engineers get paid the big bucks LOL.
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