60 watts to illuminate just one room used to be the norm. Now it sounds insane. Maybe losing the perfect color rendering index was a worthwhile tradeoff after all.

  • iusemybrain@sh.itjust.works
    3·
    2 days ago

    You can thank MOSFETs for that.

    The alternative would be using BJTs (bijunctional transistors) which are far less efficient because whichever mode the transistor is conducting in, there will always be a 0.7 voltage drop from the gate to the emitter (since after all they are diodes). In N-channel MOSFETs there is no voltage drop from gate to source. There’s also no current going into the gate, where as with BJTs there are.