Lightbulb problems: fixture or wiring?
All of my light fixtures use the LED so-called “lightbulbs”. The type that mine uses are all 3x5 LEDs. Most of them work fine. But the one over the kitchen sink keeps burning out bulbs quickly. AFAIK ...
Forum Discussion
2oldman wrote:
The OP wants a simple version. The switching power supplies are for you technicians here.
simple versions and shore power are a BAD combination. converter will go to 14.6V occasonally and lead to thermal runaway on the lights with just a dropping resistor.
LED are a CONSTANT current device, NOT constant voltage. driven from a voltage source as they heat up, junction voltage goes down, current goes up more, leakage current goes up, LED gets hotter, get the picture.
for a trailer if you are expecting them to last any length of time you want ones that specify a wide operating voltage range, say 9-20V or more. these drive the LED with a constant current.
Otherwise they can actually get hot enough to melt the solder on the circuit board.
Anymore the goods ones are reasonably priced.
