LADP-9 Apparatus of Franck-Hertz Experiment – Basic Model
Introduction
This Franck-Hertz experiment apparatus is a cheap instrument to demonstrate the existence of Bohr atomic energy levels. Experimental results can be acquired by manual data recording, or viewed on an oscilloscope, or processed using a digital storage oscilloscope. No oscilloscope is necessary if an optional data acquisition (DAQ) card is ordered for use with a PC via USB port. It is an ideal teaching apparatus for physics laboratories at colleges and universities.
Specifications
| Description | Specifications | |
| Voltage to Franck-Hertz tube | VG1K | 1.3 ~ 5 V |
| VG2A (rejecting voltage) | 1.3 ~ 15 V | |
| VG2K–point by point | 0 ~ 100 V | |
| VG2K–on oscilloscope | 0 ~ 50 V | |
| VH (filament voltage) | AC: 3,3.5,4,4.5,5,5.5,& 6.3 V | |
| Parameters of sawtooth wave | Scanning voltage | 0 ~ 60 V |
| Scanning frequency | 115 Hz ± 20 Hz | |
| Voltage amplitude of scanning output | ≤ 1.0 V | |
| Micro current measuring range | 10-9~10-6 A | |
| Number of measured peaks | point-to-point | ≥ 5 |
| on oscilloscope | ≥ 3 | |
Parts List
| Description | Qty |
| Main Unit | 1 |
| Argon Tube | 1 |
| Power Cord | 1 |
| Cable | 1 |
| DAQ with Software (Optional) | 1 |
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