Power Supplies

TEL-U33000 High Voltage Power Supply

TEL-33000 High Voltage Power Supply

This multiple output power supply has four outputs that are primarily intended to supply power for electron tubes and Helmholtz coils. Its own individual analog dial monitors each of the four independently adjustable DC voltages. Each output is stabilized, regulated, floating and galvanically isolated from one another. In atdition, the outputs are short circuit proof and secure from external voltages.

500 V output:
Voltage: 0 - 500 V DC, max. 50 mA
Stability at full load: ≤ 0.01% 100 mV
Residual ripple: ≤ 20 mV
50 V output:
Voltage: 0 - 50 V DC, max. 50 mA
Stability at full load: ≤ 0.1% 30 mV
Residual ripple: ≤ 50 mV
8 V output:
Voltage: 0 - 8 V DC, max. 3 A
Residual ripple: ≤ 0.1% 30 mV
Overload protection: Thermal cut-out
12 V output:
Voltage: 0 - 12 V DC, max. 4 A
Residual ripple: ≤ 0.1% 30 mV
Overload protection: Thermal cut-out
Displays: Analog, class 2
Connections: 4 mm safety sockets
Power consumption: 50 VA
Dimensions: 85x325x190 mm approx.
Weight: 4 kg approx.
TEL-U33000-115 High Voltage Power Supply $709.00

TEL-33010 Kilovolt Power Supply

TEL-33010 Kilovolt Power Supply

This kilovolt power supply is a floating high voltage source for use with electron tubes. A built-in high voltage resistant transformer supplies the heater voltage for the electron tubes. The high voltage is continuously adjustable and safe to touch. It has a passive current limitation in atdition to an analog voltage display.

High voltage output: 0 - 5000 V DC, max. 2 mA
Heater voltage output: 6.3 V AC, max. 3 A, high voltage resistant up to 6 kV
Connections: 4 mm safety sockets
High-voltage display: analog
Dimensions: 235x130x155 mm approx.
Weight: 3.5kg approx
TEL-U33010-115 $644.00

TEL-U33020 Low Voltage Power Supply


This universal power supply has a digital current and voltage display. Output voltage and output current are continuously adjustable. This supply can be used as a constant voltage source with current limiting or as a constant current source with voltage limiting.

DC output: 0 - 20 V, 0 - 5 A
Output power: 100 W
Stability under full load:
Voltage Regulated: ≤ 0.01% 5 mV
Current Regulated: ≤ 0.2% 5 mA
Residual ripple: ≤ 1 mV, 3 mA
Display: 2 x 3 digit LED
Terminals: 4 mm safety sockets
Dimensions: approx. 130x150x300 mm
Weight: approx. 4.7 kg
TEL-U33020-115 Low Voltage Power Supply $340.00

TEL EV11M Power Supply

EV11M Power Supply

Two separately-regulated, independent supplies provide 0-500 Vdc at 10 mA, 0-50 Vdc at 10 mA and filament voltage taps supplying 1, 2, 3, 4, 5, or 6 Vac. A 7.5cm panel monitors the high voltage. All supplies float relative to ground and interconnect in any order desired.


High Voltage:
0-500 Vdc @ 10 mA
4% for line @ load limits
Low Voltage:
0-50 Vdc @ 10 mA
4% of setting, maximum load
high voltage on 7.5 cm panel meter
Heater Voltage:
1, 2, 3, 4, 5, or 6 Vac @ 1A
floating grounds, supplies connect together as desired
eight 4mm banana jacks