Headlight bulbs

Xaccers · Post by **Xaccers** » 14 Nov 2008, 17:24

reblack68 wrote:Our Physics teacher told us at length that they weren't batteries because they only contain one cell. It was obviously something that bothered him

Did he also say it's potential difference, not voltage?

Post by **CitroJim** » 14 Nov 2008, 17:38

Xac wrote: Did he also say it's potential difference, not voltage?

Don't go there Xac

This topic is seriously in danger ambling off-topic and I'm sure if we had a moderator here right now, a comment would be made to that effect. As I'm party to this topic wandering I'll say nothing more but I'm sure a proper moderator would be making a plea now for the topic to return to the topic of Xantia lamps and how the efficiency of their forward illumination luminaires can be improved...

I will say though that on a standard Xantia, a significant potential difference will be noted between the battery of cells and the luminaire light sources in question. A potential difference might also be seen between the lamp and its earth point. A useful improvement in luminaire efficiency can often by brought about by cleaning the aforementioned earth points.

reblack68 · Post by **reblack68** » 14 Nov 2008, 17:45

citrojim wrote:A useful improvement in luminaire efficiency can often by brought about by cleaning the aforementioned earth points.

Or the anterior surface of the luminaires.

handyman · Post by **handyman** » 14 Nov 2008, 18:47

And also increasing the cross-sectional area of the conductors!

Pedantic Handyman

uncle buck · Post by **uncle buck** » 14 Nov 2008, 18:54

I noticed that Lidl was recently selling a 2 pack of Tesla LAMPS (made in Germany)....for £3.95...called in the other day to pick up a set.

They were available in 50% extra bright or a blue option, they had H1, H4, H7 versions.

I had a set of the 50% brighter ones in my ZX & they did seem to brighter than a standard LAMP & they lasted for a long time.....can't go wrong at that price.

reblack68 · Post by **reblack68** » 14 Nov 2008, 19:06

I bought a set of them from LIDL a few years ago, they did seem to make quite a difference, though for a while I considered trying to find a pair of H4 headlamps that would fit in the space.