- Physics Lab Equipment
- Chemistry Lab Equipment
- Biology Lab Equipment
- Anatomical Lab Equipment
- Learning
- Educational Lab Equipment
- Magnets
- Agriculture
- Astronomy
- Earth Science
- Geography Lab Equipment
- Safety Lab Coat
- Laboratory
- Meteorological
- Electricity & Magnetism
- Heat
- School Lab Equipment
- Lab Glassware
- Science Lab Equipment
- Tvet Lab Equipment
- Robotics Kits Supplier and Manufacturer for Schools India
- Math Lab Equipment Manufacturers and Exporters in Ambala
- STEM Kits Manufacturers and Supplier India
- Engineering Lab Equipment
- Hospital Lab Equipment
- Water, Sanitation & Hygiene Supplies
- Cold Chain, Solar & Communication Equipment
- Nutrition
Teltron Diode S
Teltron Diode S (Product Code: SLE/PHY/306) is a high-vacuum electron tube with a thermionic cathode used to demonstrate the Edison effect and diode rectification in advanced school and college physics laboratories. Part of the newer Teltron S range, whose connections sit on the stand rather than on the tube, it gives an anode current of approximately 2 mA at 200 V and accepts up to 500 V on the anode. This physics lab equipment item is supplied by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India.
Specifications
| Parameter | Detail |
|---|---|
| Tube type | High-vacuum electron tube with thermionic cathode |
| Range | Teltron S range (connections on the stand) |
| Brand | Teltron (third-party brand) |
| Anode current | Approx. 2 mA at 200 V anode voltage |
| Max. heater voltage | 7.5 V AC/DC |
| Max. anode voltage | 500 V |
| Documentation | Instructions included |
| Listed for use with | EHT power supply, digital meter with two shunts, shrouded test leads (red and black) |
| Product code | SLE/PHY/306 |
| Supplied by | Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India |
What Is the Teltron Diode S Used For?
The Edison effect was first noticed as a small current reaching an extra electrode inside a lamp bulb, and it is now understood as electrons boiling off a hot filament. With the Teltron Diode S, students heat the cathode, make the anode positive and watch the emission current appear, then reverse the anode and see it stop. The same tube lets them measure how the emission current changes as the applied voltage is raised, giving the familiar diode characteristic.
Applying an alternating voltage to the anode shows rectification: current flows only during the half-cycles when the anode is positive. Keep the heater at or below 7.5 V and the anode at or below 500 V, use shrouded leads for every high-voltage connection, and follow the instructions supplied with the tube.
What to Specify When Ordering
- Whether you already have a Teltron S-range stand, since the connections for this tube are on the stand.
- Whether you need the EHT power supply and the digital meter with two shunts listed for use with Teltron tubes.
- How many sets of red and black shrouded test leads are required.
- The number of tubes per laboratory.
Supplier
The Teltron Diode S carries a third-party brand, and Jain Scientific Equipments Private Limited, known by its trading name ScienceLab, supplies it from Ambala, Haryana, India. As a physics instruments supplier in India, we source it for colleges, universities and senior schools in India and international markets, and can quote the tube together with its stand, supply and meters. See our company profile for more about us.
Related Physics Lab Equipment
Equipment that works alongside the Teltron Diode S:
- Teltron Tube Holder S — the stand for S-range tubes, where the connections are made.
- EHT Power Supply — listed as other equipment for Teltron tubes.
- Digital Voltmeter/Ammeter With Shunts — for reading emission current and voltage.
- Teltron Diode D — the D-range diode with connections fixed on the tube.
- Teltron Thomson Tube S — the next S-range experiment, measuring e/m of the electron.
More items are listed in Physics Lab Equipment.
Frequently Asked Questions
What experiments can be done with the Teltron Diode S?
The Teltron Diode S is used to demonstrate the Edison effect (thermionic emission), to investigate diode characteristics through rectification, and to measure how emission current depends on the applied voltage. Instructions for these experiments are included with the tube.
What are the voltage limits of the Teltron Diode S?
The Teltron Diode S has a maximum heater voltage of 7.5 V AC/DC and a maximum anode voltage of 500 V. Keeping within these limits protects the cathode and the tube, so check your supplies before connecting them.
What anode current does the Teltron Diode S give?
The Teltron Diode S gives an anode current of approximately 2 mA at an anode voltage of 200 V. A milliammeter or a digital meter with a suitable shunt is needed to read this current during the experiment.
What equipment is needed with the Teltron Diode S?
The Teltron Diode S is listed for use with an EHT power supply, a digital meter with two shunts, and red and black shrouded test leads. Because S-range connections are on the stand, a Teltron S-range holder is also needed.
Is the Teltron Diode S a ScienceLab product?
No. The Teltron Diode S carries the Teltron brand, a third-party name, and is supplied by Jain Scientific Equipments Pvt Ltd (ScienceLab), Ambala, India. We source it for institutions and can quote it with its accessories.
Is a calibration certificate available for the Teltron Diode S?
A calibration certificate is not listed for the Teltron Diode S. If your institution needs any test documentation, please raise it through our contact page before ordering so we can tell you what can be provided with the tube.
Request a Quote
Send the number of tubes and the stands, supplies and leads you need through our contact page, or add the Teltron Diode S to the enquiry cart for a quotation.
Last updated: 24 September 2026
