Function and Applications
Compact operating unit for Franck-Hertz experiment to be used
with Hg- and Ne-tubes.
In 1913/14 James Franck and Gustav Hertz approved Bohr's model
of atoms with this experiment (Nobel Prize: 1925).
- Automatic detection of tube type and automatic limitation of
- Examination by direct reading of displayed values,
xyt-recorder, oscilloscope or PC.
- From the recorded anode current as a function of acceleration
voltage the exitation energy of the atoms can be determined.
Equipment and Technical Data
For control and measurement of all tube parameters:
- Heating voltage (const.): 6.5 ± 0,5 V
- Acceleration voltage: 0...99 V
- Counter voltage: 0...12 V
- Emission voltage: 0...6 V
- Heater voltage: 0...10 V
- Resolution (all voltages): 0.1 V
- Heater current: 400 mA
- Heater temperature: 0...999 °C
- Anode current: 0...50 nA
- Output 4 mm-sockets:
- Acceleration voltage: 0...10 V (10 V ~ 100 V)
- Voltage ß anode current: 0...10 V (10 V ~ 50 nA)
- Data output: RS232 SubD-socket
- Display: 20 mm 7-segment LED
- 4 operation modes: manually, automatic ramp, saw tooth
(oscilloscope) and PC-control
- Power control for heater with safety socket (600 W) and type K
socket for thermocouples
- Socket for 5-pole connection cable for Hg/Ne-tube