3B SCIENTIFIC PHYSICS U10700-115 Instruction Manual

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
01/24 ALF/UD

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. Fol-
lowing 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
photocell.
 Keep the apparatus secure so that it does not
get shaken and do not expose it to extreme
temperatures, high humidity, moisture or direct
sunlight.
1 LED with connecting lead
2 Nanoammeter
3 Voltmeter
4 Protective cover for photocell
5 Collector tube for photocell
6 Coaxial power socket for power
7 Power supply with connector
8 Back EMF adjustment (coarse)
9 Back EMF adjustment (fine)
10 Intensity knob
11 Empty sleeve

2. Scope of delivery

1 Basic apparatus with photocell, voltmeter,
nanoammeter and LED power supply
1 Empty sleeve for covering the photocell col-
lector 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
supply
socket for LED