3B SCIENTIFIC PHYSICS U21881 지침서 - 페이지 3

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3B SCIENTIFIC ® PHYSICS

Instruction Sheet

12/08 ALF
1. Safety instructions
Caution. Lamps get hot when they are switched on for
a long period of time.
When handling the lamp during the experiment,
use a cloth or other protection.
After the experiment leave the lamp to cool.
Do not cover the air slits.
Do not supply the lamp with an operating voltage
in excess of 12 V.
2. Description
The optical halogen lamp is an ultra-bright light
source for experiments on optical bench and for
projection.
It consists of a metal housing with a built-in
condensing lens and integrated cooling fan. The knob
on the rear for moving the lamp bulb makes it
Optical Halogen Lamp U21881
possible to obtain a parallel light beam. To reduce the
intensity of the light beam, a hole diaphragm can be
attached to the condensing lens by means of a
retaining ring. The handling rod can be unscrewed if
necessary.
Spare halogen lamp, 12 V, 50 W
4. Technical data
Halogen lamp:
Connection:
Condenser focal length:
Condenser diameter:
Rod:
Dimensions:
1
1 Hole diaphragm
2 Rod
3 Condenser
4 Retaining ring
5 Lamp housing
6 Air slits
3. Accessories
12 V, 50 W
4-mm safety jacks
75 mm
45 mm
120 mm x 10 mm dia.
approx. 190 x 125 x 110 mm³
U13735