TOE 8870 Series Power Supplies

Product enquiry for TOE 8870 Series Power Supplies

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High-performance series power supplies – TOE 8871 (1000 W) to TOE 8872 (1500 W)

High performance and easy-to-use
An output power up to 1500 W is provided by the power supplies belonging to the TOE 8871 and TOE 8872 series; at the same time, output voltages can be generated up to 400 V and output currents up to 100 A depending on the model.

Together with a high efficiency, the power supplies are characterized by permanent load resistance, auto-ranging and a low weight.


A highly effective power factor corrector (PFC) ensures that the TOE 8871 and TOE 8872 power supplies react with respect to the mains source like a resistance without any capacitive, inductive or non-linear components whatsoever. The mains current input is therefore sinusoidal, in-phase with the line voltage, and thus free of reactive current components.

Integrated measurement
A further significant characteristic is the high-resolution measurement of the voltage, current and power values; these are output on 4-digit LED displays and can be read at a high rate in bus mode. This means that additional measuring instruments are usually superfluous.

Remote control: GPIB, RS 232 and analogue
All devices can be remote-controlled as standard in analogue mode, and optionally via GPIB and RS 232 interfaces with the standardized SCPI command set (SCPI: Standard Commands for Programmable Instruments). The system interfaces are characterized by a high setting rate and a high measuring rate. In addition to this, device driver software under “LabView“ is also available. Furthermore, all devices can be controlled at high precision via an electrically isolated analogue controller (option).

Automatic calibration
Fast and convenient calibration of all output parameters is possible externally within a few minutes without having to adjust any trimmers or make any interventions in the device. This “Auto-calibration“ can be carried out simply using the control elements or with computer support within a test system systems.

Voltage source, current source and automatic power control
Depending on the set values for voltage, current and power, each power supply can be operated, depending on the load conditions, as a constant voltage source, constant current source, or as a source with a constant output power.

Key Features

  • Auto-ranging
  • Active PFC
  • High rise and fall rates
  • High endurance, even under extreme load conditions
  • Best EMC factors; residual ripple 5 mVrms up to 10 MHz, optional 1 mVrms
  • Low voltage, optional ca. 1 mVeff
  • GPIB-, RS 232 interface(option)
  • Analogue interface as standard
  • Floating analogue interface with monitor outputs for voltage and current (option)
  • Arbitrary function (option)
  • Brief load current 1.5 x Irated for approx. 20 ms (option)
  • Sensing
  • Can be used as constant voltage, constant current and constant power source (CV/CC/CP)
  • Extremely quiet thanks to excellent thermostatically controlled fan technology
  • Master/slave operation
  • Free LabViewTM-driver

Application Notes