Want to replace incandescent bulbs with brighter LED
Has anyone tried these and if so are they really as bright as they claim?
Forum Discussion
Gdetrailer wrote:
Transistors and resistors perhaps, but no switching constant current regulator what so ever. You can make a simple series pass "regulator" with a handful of resistors and one transistor but a series pass regulator is very inefficient, wastes a lot of energy as heat and unless you throw in something like a zener diode for creating a rock solid reference voltage that series pass regulator will eventually pass more and more voltage and current..
No doubt it's not super efficient, but at that price point and size, you're not likely to find a full switching power supply. But since it's drawing around 4W to replace an ~18W bulb, wasting a watt or so as heat is probably not a big deal.
