EHT Power Supply Manufacturer,Supplier and Exporter
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Product Code : SEL-PLE-10138
Quick Answer: Giving a fully isolated, continuously variable output of 0-2.5 kV or 0-5 kV DC at up to 2 mA, this EHT power supply is intended for electrostatic experiments and for driving tubes that need a 6.3 V AC heater supply.
Last updated: October 2026
Key Features
- Continuously variable 0-2.5 kV or 0-5 kV DC, maximum 2 mA, fully isolated
- Output current electronically limited to 2 mA; outputs also limited by 100K resistors, short-circuit current 60 µA
- Two secondary outputs through 25 M ohm resistors
- Auxiliary 6.3 V AC, 1 A output for cathode heaters, with resettable fuse
- Bright 12.5 mm green LED display of the EHT output
- Shrouded sockets for standard 4 mm plugs or shrouded plugs, plus an independent earth terminal
Technical Specifications
| Specification | Value |
|---|---|
| Input | 220 V-240 V, 50/60 Hz |
| EHT output | 0 to 5 kV DC, 2 mA or 2.5 kV DC, 2 mA |
| Secondary outputs | Two, through 25 M ohm resistors |
| Auxiliary output | 6.3 V AC, 1 A, resettable fuse |
| Display | 12.5 mm green LED |
| Fuse | 315 mA (L) |
| Dimensions (W x H x D) | 208 x 155 x 115 mm; 187 mm high including handle |
| Sockets | Shrouded, for 4 mm plugs; independent earth terminal |
About This Product
Electrostatics and electron-tube experiments need thousands of volts but only a tiny current. This unit limits the current electronically and through series resistors, which keeps transient currents small, while the digital display monitors the output. The specially wound switching transformer is designed so that the output maintains a stable voltage with time. The EHT Power Supply can be exported to Costa Rica, the Philippines, Syria, Vietnam and Lithuania.
Frequently Asked Questions
What output voltages does it provide?
A continuously variable, fully isolated EHT output of 0-2.5 kV or 0-5 kV DC at a maximum of 2 mA, two secondary outputs through 25 M ohm resistors, and an auxiliary 6.3 V AC, 1 A output.
How is the output current limited?
It is electronically limited to 2 mA, and the outputs are also limited by 100K resistors, giving a short-circuit current of 60 µA.
Can one output socket be earthed?
Yes. An independent earth terminal allows any one of the five output sockets to be earthed.
Related: Physics Lab Equipment, Van De Graff Generator For Physics Lab, Electrometer and DC Amplifier, Digital Coulomb Meter.
For a quotation on the EHT Power Supply, contact School Educational Instrument.
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