3b-scientific Single Ray Projector User Manual
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Operating instructions
3B SCIENTIFIC® PHYSICS
U40120 Single-beam lamp
U40121 Magnet holder
1/03 ALF
®
The single-beam lamp is used in experiments to demon-
strate geometric optics on magnetic boards (U14600).
1. Safety instructions
• Caution: Lamps heat up during extended periods of
operation.
• Do not touch the glass bulb of the lamp with your
bare hands when changing the bulb, for example.
Lamp bulbs are clouded by fat deposits on the skin.
2. Description, technical data
Enclosed in a round metal housing, this lamp has a rotat-
ing mount and an adjustable aperture for producing nar-
row light beams or light cones.
Lamp: 12V, 35W
Power cable: 1.5 m long with a 4-mm plug
Dimensions: 120 mm x 70 mm Ø
Weight: 0.25 kg
2.1 Accessories:
Magnet holder U40121 for mounting the single-beam
lamp U40120.
Diameter: 65 mm
Spare bulb U40122 for the single-beam lamp U40120.
3. Procedure
3.1 Setting a narrow light beam
• Attach the magnet holder to the board.
• Fit the single-beam lamp on the magnet holder.
• Plug the lamp into a power supply unit, for instance,
U11735.
• Loosen the knurled screw.
• Enlarge or reduce the aperture to achieve the re-
quired beam thickness.
• Tighten the knurled screw firmly.
3.2 Setting a light cone
• Attach the magnet holder to the board.
• Fit the single-beam lamp on the magnet holder.
• Plug the lamp into a power supply unit, for instance,
U11735.
• Loosen the knurled screw.
• Enlarge or reduce the aperture to obtain the re-
quired light cone.
• Tighten the knurled screw firmly.
3.3 Bulb replacement
• Loosen the
screws (A).
• Remove the
protective
cover (B).
• Change the bulb.
• Do not touch the
bulb with your
bare fingers
when changing it.
• Install the protective cover (B)
over the lamp and tighten the screws (A).
1 Protective cover for the lamp socket
2 Knurled screw for adjusting the aperture
3 Magnet holder
4 Aperture with lens
5 Handle
1
2
3
4
5
3B Scientific GmbH • Rudorffweg 8 • 21031 Hamburg • Germany • www.3bscientific.com • Technical amendments are possible
A
A
B
A
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Summary of Contents
Page 1 - U40121 Magnet holder
2Operating instructions3B SCIENTIFIC® PHYSICSU40120 Single-beam lampU40121 Magnet holder1/03 ALF®The single-beam lamp is used in experiments to demon
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