Power Supply Unit for Franck-Hertz Experiment
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Power Supply Unit for Franck-Hertz Experiment

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£1,042.36  exc. VAT    
(£1,250.83 Inc. VAT)

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  • Provides voltage needed to power tubes in Franck-Hertz Experiment
  • Sensitive built-in DC amplifier
  • Accelerating voltage can be set manually or set to saw-tooth wave form
  • Additional measuring inputs available 
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power supply unit for franck-hertz experiment

The Power Supply Unit for Franck-Hertz Experiment is a fundamental piece of equipment for conducting the famous experiment. Through this, Franck and Hertz demonstrated the existence of discrete energy states in atoms, helping confirm the quantum theory.

The power supply unit is used to operate the mercury filled Franck-Hertz tube, the neon filled Franck-Hertz tube or the critical potential tubes during this experiment. 

The equipment provides all the voltages needed to power the tubes and includes a sensitive built-in DC amplifier for measuring collector current. The voltages can simultaneously be read off a display. The accelerating voltage can be set up manually on the apparatus or set to a saw-tooth wave form. Additional measuring inputs are also available for the anode current and accelerating voltage.

An experiment regularly carried out by students, the Power Supply for Franck-Hertz Experiment is a useful addition to any classroom lab.

Franck-hertz experiment

The quantisation of energy and the generation, recording and evaluation of spectra, along with the experimental verification thereof, is included in most of the curricula used around the world.

The well known experiment, first performed by James Franck and Gustav Hertz in 1914, is critically important in terms of demonstrating discrete energy states in atoms. It provides strong confirmation of the idea of quantised atomic energy levels.

Technical specification

  • Filament voltage UF: 0 − 12V, continuously adjustable
  • Control voltage UG: 0 − 12V, continuously adjustable
  • Accelerating voltage UA: 0 − 80V
  • Modes of operation: manually adjusted / saw-tooth
  • Counter-voltage UE: 0 − ±12V, continuously adjustable, switchable polarity
  • Output UY for collector current IE: IE = UA * 38 nA/V (0 − 12V)
  • Output UX for accelerating voltage UA: UX = UA / 10
  • Outputs: 4mm safety sockets
  • Input: BNC socket
  • Dimensions: approx. 160 x 132 x 210mm3
  • Weight: approx. 3.4kg

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Related Products

Franck-Hertz Tube with Mercury Filling and Heating Chamber

Franck-Hertz Tube with Mercury Filling and Heating Chamber
£1,258.66
Add to Basket
 
  • Highly evacuated electron tube containing mercury
  • Heating chamber included
  • For use in Franck-Hertz Experiment
  • Demonstrates quantisation of atomic energy levels

Franck-Hertz Tube with Neon Filling

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£503.65
Add to Basket
 
  • Highly evacuated electron tube containing neon
  • For use in Franck-Hertz Experiment
  • Mounted on base
  • Colour coded connection sockets

Replacement Tube for Franck-Hertz Experiment

Replacement Tube for Franck-Hertz Experiment
£327.14  -  £381.64
Add to Basket
 
  • Replacement tube for use in Franck-Hertz Experiment
  • Choose between tube for mercury or neon filling
  • Ideal for use in schools to replace broken or old parts
  • For use with existing Tube with Neon or Mercury Filling appartus
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