Quick Answer: The EHT Power Unit gives a continuously variable, fully isolated 0-5kV output at a maximum of 2mA, plus a 6.3V a.c. auxiliary output at 3A for cathode heaters.
Last updated: October 2026
Key Features
Continuously variable 0-5kV EHT output, maximum 2mA
Second EHT output through a 50MΩ safety resistor
Auxiliary 6.3V a.c. output at 3A
Backlit digital display of the EHT output
Separate earth terminal for earthing either side of the output
Sockets take standard 4mm plugs and shrouded plugs
Technical Specifications
Specification
Value
EHT output
0-5kV, maximum current 2mA
Second EHT output
Via 50MΩ resistor, short-circuit current 60µA
Auxiliary output
6.3V a.c. at 3A
Size
175 x 190 (206mm inc. cable clips) x 341mm
Mass
4.8kg
About This Product
The unit is used for electrostatics experiments and for driving vacuum devices such as the deflection e/m tube. A safety resistor between the smoothing capacitors and the output limits current to 2mA. The second output, linked through a 50MΩ resistor, is for electrostatics work, and the earth terminal lets either the negative or positive side be earthed. The EHT Power Unit is available for supply within India and for export to Tunisia, Saint Vincent and the Grenadines, Malaysia, Tajikistan, New Zealand and Sierra Leone.
Frequently Asked Questions
Q1. Which output is used for electrostatics experiments? The second EHT output, linked by a 50MΩ resistor, is provided for electrostatics work and gives a short-circuit current of 60µA.
