3B SCIENTIFIC PHYSICS Instrucciones De Uso página 5

3B SCIENTIFIC ® PHYSICS
Planck's Constant Apparatus (115 V, 50/60 Hz)
Planck's Constant Apparatus (230 V, 50/60 Hz)
1000536 / U10700-115
1000537 / U10700-230
Instruction manual
07/13 ALF
1. Notes
The photocell in the Planck's constant apparatus is
highly sensitive. Bright light can cause it to age
quickly and can cause permanent damage. Following
irradiation it ideally needs to be left for quite a long
period before it regains its stability.
•
The protective cover for the photocell should
never be removed.
•
When the experiment is completed, slide the
empty sleeve over the collector tube of the pho-
tocell.
•
Keep the apparatus secure so that it does not get
shaken and do not expose it to extreme tempera-
tures, high humidity, moisture or direct sunlight.
2. Scope of delivery
1 Basic apparatus with photocell, voltmeter, na-
noammeter and LED power supply
1 Empty sleeve for covering the photocell collector
tube
5 LEDs (472 nm, 505 nm, 525 nm, 588 nm,
611 nm) in case with connector leads
1 Plug-in power supply, 12 V AC
1 Instruction manual
1 Work sheet for carrying out evaluation
1
1 LED with connecting lead
2 Nanoammeter
3 Voltmeter
4 Protective cover for photo-
cell
5 Collector tube for photocell
6 Coaxial power socket for
power supply
7 Power supply with connector
socket for LED
8 Back EMF adjustment (co-
arse)
9 Back EMF adjustment
(fine)
10 Intensity knob
11 Empty sleeve