Satco Products Halogen Lamps manual Halogen Basics

Halogen Basics

Halogen light bulbs operate

s

e

on the same principle as

a

l

e

c

i

t

t

p

r

m

n

E

standard incandescents

t

a

v

e .

o p

l

n

i

a

f

c

e

e

o

s

l

heating the tungsten

n

h t

o

l

e t

g

t

a

h

l

r

i

u

mp

r

a d a

T

o

e

filament until it glows

o a

g

d

e

n

t

r

v

s

but from there,

f

e w

g

a

i u

t

P

g h n

halogens improve

R

e e

RE

E

S

s t

n

s

.h

S

t

upon the process.

D In order for the

U

U

N

halogen cycle to function

R

properly, the gas must be

E

HOW IT WORKS

inserted into the quartz envelope at

•

must be sealed off and

• a very high level of pressure, and it

U

Operation of halogen lamps

b T

E

maintained at the same level.

is based on the “Halogen Cycle”

a u

RFor safety reasons, a particle

N

k

U

barrier is required.

t

c n

D

(see right). Tungsten particles from

g

S

en e

g

S

E

h i

s

t

RP

R

the bulb’s filament evaporate.

s h

a t i

E

t

n

The evaporated tungsten collides

o

i

s

e r

with the halogen gas. The particles

s

e

ly

e a p

f

d

i

r

l

e

l

s

a

a

e

o

chemically bond with the halogen

l m

ic

g

s n

t

n

a e s

t

i

m

e

e

e

e

g

gas. Tungsten is then redeposited

d

c

l

.

d a

h

o

n

s

a

d

h

e

l

c

e

back to the filament and the gas

Pa

ti

th

r

h

it

is re-released.

bon

w

d

The operating temperature is a significant factor to ensure that the halogen cycle performs properly. The interior wall of the bulb must be above 250° C and less than 1,100° C. Additionally, the filament of the lamp must reach at least 2,000° C. To reach this temperature, the interior wall must be in close proximity to the tungsten filament.

Bulb

shapes

JCJCGVMR

Base Types

JD	JD	ALR
Krypton

Bi Pin Double Loop E11 DC Bay.

GU10 Euro (E14) Medium (E26) Medium Skirted AR A BT

Screw Term. Side Prong Mog. End Prong R7s

R BR PAR

T