So, How do single bulb high beams work??

[Nefrodite]

Its all one bulb right? so are there 2 filaments? just wondering

no its not on howstuffworks.com


So, How do single bulb high beams work??

 

[HappyPuppy]

They have 2 filaments.

 

[Anubis]

yes 2 filiments at different angles so when their reflected the beam is at a different angle hence brighter

 

[Eli]

Originally posted by: TheEvil1
yes 2 filiments at different angles so when their reflected the beam is at a different angle hence brighter

No. It's the same thing as your brake lights. Look at the bulb - It has two filaments. One is made with larger diameter "wire", for lack of a better term. One is made with many more turns of smaller diameter wire = more light.

 

[FrustratedUser]

2 filaments.

 

[Nefrodite]

hehe when i squeeze the headlight stick halfway i got both high and low at the same time. guess i should be afraid of melting something its a civic btw.

 

[Mark R]

It is 2 filaments - however, the two filaments are of comparable brightness - not like a brake light where they are of greatly different brightness and construction. Low and high filaments are nominally 55 and 60 W respectively.

I'm only familiar with the H4 type of bulb - in this, the low beam filament is surrounded by a reflector which directs the light down towards the road. The high beam filament does not have an integral reflector, and so the light output is undirected. When the high-beams are switched on, the low filament must be switched off (otherwise the bulb will overheat). Take a look at the photo over here

 

[Eli]

Originally posted by: Nefrodite
hehe when i squeeze the headlight stick halfway i got both high and low at the same time. guess i should be afraid of melting something its a civic btw.

Cool.

Mark- Ahh.

 

[Anubis]

Originally posted by: Eli

Originally posted by: TheEvil1
yes 2 filiments at different angles so when their reflected the beam is at a different angle hence brighter

No. It's the same thing as your brake lights. Look at the bulb - It has two filaments. One is made with larger diameter "wire", for lack of a better term. One is made with many more turns of smaller diameter wire = more light.

actually ist a combination of both. because the filiments arent in the same place the morror will reflect the light a lil differently

 

[Jerboy]

Originally posted by: Eli

Originally posted by: Nefrodite
hehe when i squeeze the headlight stick halfway i got both high and low at the same time. guess i should be afraid of melting something its a civic btw.

Cool.

I doubt you'd hurt anything.

Two different filaments. They're both about the same wattage and placed at different positions.

Nefrodite, DO NOT do that for more than a second or two. The 9004 or H4 bulb isn't designed to take the thermal load of both filaments operating simultaneously.

 

[Nefrodite]

Nefrodite, DO NOT do that for more than a second or two. The 9004 or H4 bulb isn't designed to take the thermal load of both filaments operating simultaneously.



hehe oops i've held it for a minute at a time sometimes when its really dark and deserted and i need it or just for kicks

 

[morkinva]

I hope you didn't touch the bulb with your finger :Q

 

[Nefrodite]

hehe no they are factory. btw how do u install bulbs without touching the glass? they come with a plastic holder or something?