Halogen bulbs

848
4
I am trying to replace a halogen bulb in an old makeup mirror. The bulbs has two metal prongs coming down. The mirror has some funky wiring which i assume is some sort of power inverter, but anyway...where it attached to the bulb, there is one black wire going to the bulb which seems to be connected to both prongs, while another red one seemingly has no place to connect to?

How do halogen bulbs work...is it just a ground and a power that gets connected, like in normal bulbs?
 

Danger

Gold Member
9,564
244
KingNothing said:
How do halogen bulbs work...is it just a ground and a power that gets connected, like in normal bulbs?
Halogen bulbs work like any other gas-discharge device, the same as a neon sign. It sounds to me as if you bought the wrong kind of replacement. There are several different electrode configurations to fit different types of fixtures.
 

pervect

Staff Emeritus
Science Advisor
Insights Author
9,554
828
Halogen bulbs are just like incandesent bulbs, not gas discharge. They usually don't have any fancy circuitry, but tend to run hot and require special heat-resistant fixtures.

If you meant a fluorescent bulb by some chance, those ARE gas discharge devices, and they may have some associated circuitry with them (usually called ballast).
 

Danger

Gold Member
9,564
244
pervect said:
Halogen bulbs are just like incandesent bulbs, not gas discharge.
Somebody slap me right now. :redface: Even while I was reading and typing 'halogen', I was thinking 'fluorescent'. There are different pin configurations though, for different applications.
 

Related Threads for: Halogen bulbs

Replies
5
Views
3K
Replies
16
Views
1K
Replies
36
Views
23K
  • Posted
Replies
2
Views
1K
  • Posted
2
Replies
28
Views
5K
Replies
2
Views
4K
Replies
1
Views
784
  • Posted
Replies
1
Views
2K

Physics Forums Values

We Value Quality
• Topics based on mainstream science
• Proper English grammar and spelling
We Value Civility
• Positive and compassionate attitudes
• Patience while debating
We Value Productivity
• Disciplined to remain on-topic
• Recognition of own weaknesses
• Solo and co-op problem solving
Top