Teltron Perrin Tube S
Product Code : JLI-PLE-10594
Quick Answer: The Teltron Perrin Tube S is a highly evacuated electron tube with a focusing gun and an inclined fluorescent screen, so the beam path and the effects of electric and magnetic fields can be seen. It is also used to find e/m and mean electron velocity by field cancellation.
Last updated: 18 October 2026
Key Features
- Beam deflected magnetically with external Helmholtz Coils S.
- Beam deflected electrically by the field of the built-in plate capacitor.
- Field cancellation gives the electron charge-to-mass ratio (e/m) and mean electron velocity.
- Inclined fluorescent screen shows the path of the beam.
Technical Specifications
| Specification | Value |
|---|---|
| Max. capacitor voltage | 500 V |
| Anode current | Approx. 0.1 mA at 4 kV |
| Max. filament voltage | 6.3 V AC |
| Max. anode voltage | 5 kV |
How It Is Used
With the Helmholtz Coils S around the tube, the beam can be bent by the magnetic field, by the plate voltage, or by both together. Setting the electric field so that it cancels the magnetic deflection lets students calculate e/m and the mean speed of the electrons.
Frequently Asked Questions
How can the beam in the Teltron Perrin Tube S be deflected?
Magnetically, using external Helmholtz Coils S, or electrically, using the electric field of the built-in plate capacitor.
Related Physics Lab Equipment
See the full physics lab equipment range, or these related S-series tubes and holders:
- Teltron Helmholtz Pair of Coils S
- Teltron Tube Holder S
- Teltron Dual Beam Tube S
- Teltron Electron Diffraction Tube S
Buyers in Bosnia and Herzegovina, Maldives, Somalia, Japan, North Macedonia and Kyrgyzstan can order the Teltron Perrin Tube S from JLab India as an export order.
For a quotation on the Teltron Perrin Tube S, contact JLab India on +91-8569909696.
