35mm
Well-Known Member
A couple of things... LEDs will only work with correct polarity as they are diodes (Light Emitting Diode), and one important property of diodes is that they act like one way valves, only allowing the current to flow one way. So if you get the polarity wrong, they won't blow up or break, but just won't work.
The other thing is, LEDs don't contain a hot element like bulbs do, they contain a gap which is why they are so efficient and don't generate heat. This makes them naturally quite robust and fairly flexible to voltage. So unlikely to overheat or catch fire. A voltage regulator is recommended to keep them running within their designed voltage range, but if these lights are cheep to replace, and a voltage regulator isn't so cheep and can introduce RF noise issues, then you can suck it and see. If you find your self having to replace them too soon, fit a regulator which you can pick up in Maplins or the web.
The other thing is, LEDs don't contain a hot element like bulbs do, they contain a gap which is why they are so efficient and don't generate heat. This makes them naturally quite robust and fairly flexible to voltage. So unlikely to overheat or catch fire. A voltage regulator is recommended to keep them running within their designed voltage range, but if these lights are cheep to replace, and a voltage regulator isn't so cheep and can introduce RF noise issues, then you can suck it and see. If you find your self having to replace them too soon, fit a regulator which you can pick up in Maplins or the web.