Recent content by Joshua_S

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  1. J

    LNK420 got cracks in the body with power supply 75 W

    I apologize. These are not just mine, but the tests and results discussed from us were me who finally put them together and posted here, just wanna ask you guys about this lnk420 failure what you think and what should we do....Do i picked the wrong forum? you said the copy attached was not from...
  2. J

    LNK420 got cracks in the body with power supply 75 W

    When we use LNK420 ( this one: http://www.kynix.com/Parts/80833/LNK420LG.html and the datasheet: http://www.alldatasheet.com/view.jsp?Searchword=LNK420LG) with power supply 75 W we have got cracks in the body. The photos are attached. Does it happen often with LNK420? What is the solution...
  3. J

    Do you know anything about this kind of LED dimmer?

    Thanks and if that is the case perhaps I should pass it, and i will take the 5v pwm LED controller which you kindly have just suggested into consideration. I still don’t really get that why constant current/voltage is so important in this kind of setup. It’s ok if you don’t feel like to explain.:p
  4. J

    Do you know anything about this kind of LED dimmer?

    Hi, I need to build a setup, using one 18650 to power up an XM-L LED with dimming control. It is not in a flashlight setup and I just need to build this thing for some special purposes. I need to control the dimming by turning a knob, so this kind of dimmer/potentiometer came into my mind. The...
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