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Single-output and dual-output power supplies up to 160 W
TOE 8841 to TOE 8842, In-phase regulation

Overview

A proven concept
has been used for the new, systemcompatible single-output and dual-output power supplies of the TOE 8840 and TOE 8850 series.

Exceptional specifications are achieved with a total output power of 160 W or 320 W as a result of the classical in-phase control principle.

A total of 22 different models deliver voltages up to 130 V and currents up to 20 A. With a resolution of 12 bits in the voltage and current ranges, a simple and convenient user interface, and the excellent specifications, these instruments are suitable for both manual and busbased modes.

Integrated measurements
A further significant characteristic is the high-resolution measurement of the voltage and current 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.

Adjustment using incremental spinwheels
The output values are adjusted with a selectable sensitivity using wear-free incremental spinwheels, thus permitting reliable and precise adjustment of the output voltage and current even after many years of service.

Remote control (option)
All instruments can be remote-controlled in analog mode as well as via GPIB and RS 232 interfaces using the SCPI command set (SCPI: Standard Commands for Programmable Instruments). The system interfaces are characterized by a high response and measuring rate. In addition, instrument driver software is available under “LabView“.

Automatic calibration
Fast and convenient calibration of all output parameters is possible externally within a few minutes without any adjustment of trimmers or interventions in the instrument. This “software calibration“ can be carried out simply using the control elements or supported by a computer within a test system. The “software calibration“ provides an advantage which should not be underestimated when considering the regular calibration intervals which are becoming increasingly important in quality assurance systems.

Voltage or current source
Depending on the values set for the voltage and current, each power supply can be operated as a voltage source or a current source depending on the load conditions. All outputs can be connected in parallel or series without problem.

High performance and exemplary operating characteristics

Special features
- In-phase regulation
- Adjustment of voltage and current using wear-free incremental spinwheels
- Maximum precision using μP-controlled autocalibration
- System-compatible with GPIB and RS 232 interfaces (option))

Models

  Output 1 Output 2  
Model Voltage Current Voltage Current Power 
Single-output power supplies 
TOE 8841-24
TOE 8841-32
TOE 8841-40
TOE 8841-64
TOE 8841-130

0 -   24 V
0 -   32 V
0 -   40 V
0 -   64 V
0 - 130 V

0 - 6,5 A
0 - 5,0 A
0 - 4,0 A
0 - 2,5 A
0 - 1,2 A











160 W
160 W
160 W
160 W
160 W
Dual-output power supplies
TOE 8842-24
TOE 8842-32
TOE 8842-40
TOE 8842-64
TOE 8842-130

0 -   24 V
0 -   32 V
0 -   40 V
0 -   64 V
0 - 130 V

0 - 3,25 A
0 -   2,5 A
0 -   2,0 A
0 -   1,2 A
0 -   0,6 A

0 -   24 V
0 -   32 V
0 -   40 V
0 -   64 V
0 - 130 V

0 - 3,25 A
0 - 2,5 A
0 - 2,0 A
0 - 1,2 A
0 - 0,6 A

2x 80 W
2x 80 W
2x 80 W
2x 80 W
2x 80 W

Tracking function
The automatic tracking mode with dualoutput power supplies means that it is possible to control the output voltage of output 2 as a function (0 % to 100 %) of output 1 with retention of all control properties.

Remote control
Command syntax in accordance with IEEE 488.2 with command set switchable between compatible TOELLNER commands and SCPI commands.

GPIB interface (option)
Interface connection in accordance with IEEE 488.1; electrically isolated from main outputs. The device address can be set as desired per menu.
Setting rate: approx. 25 settings/s
Measuring rate: approx. 20 measurements/s

RS 232 interface (option)
9-pin D-SUB connector; electrically isolated from the main outputs. Transfer: half-duplex mode, asynchronous; 110 to 19200 baud adjustable permenu.
Setting rate: approx. 20 settings/s
Measuring rate: approx. 15 measurements/s

Additional functions
These modern, proven and exceptionally well equipped power supplies are additionally characterized by supplementary functions such as the saving of 100 instrument settings, the standby circuit for the power outputs, sense and tracking modes.

Price and performance
In addition to the exceptional specifications and characteristics, all power supplies of the TOE 8840 and TOE 8850 series have a remarkable price/performance ratio.

Common operating functions
Anzeige Voltage und Current:
Display of voltage and current: separately on two 4-digit displays for all single instruments; on two selectable 4-digit V/A displays for the dual instruments. Constant voltage or constant current mode is indicated by single LEDs.
Nonvolatile memory for 100 complete instrument settings and the last setting when switching-off.

Special features
-
In-phase regulation, thus extremely low residual ripple, below 300 μVrms (depends on model)
- Operation possible as voltage source or current source
- No switch-off peaks and no transients at output
- Extremly high long-term stability
- Resistant to continuous load
- Extremly quiet
- 100 complete instrument settings can be saved resistant to power failure.
- RS 232, GPIB interface optional
- Analog interface optional, floating also possible
- Free LabViewTM driver
- Electrically isolated outputs
- As desktop unit with adjustable feet or for 19“ mou or 19“ adapter for rack mounting

Outputs
- Floating for all models
- Electrically isolated in the dual-output power supplies
- Series and parallel connections possible
- Safety sockets at front

Technical data

Single-output power supplies
Model
  TOE 8841-24 TOE 8841-32 TOE 8841-64 TOE 8841-130
Output data
Voltage
Current
0 - 24 V
0 - 6.5 A
0 - 32 V
0 - 5 A
0 - 64 V
0 - 2.5 A
0 - 130 V
0 - 1.2 A
Setting resolution Voltage
Current
10 mV
2 mA
10 mV
2 mA
20 mV
1 mA
100 mV
1 mA
Setting accuracy Voltage
Current
0.1 % + 15 mV
0.2 % + 10 mA
01 % + 20 mV
0.2 % + 4 mA
01 % + 20 mV
0.2 % + 2 mA
01 % + 100 mV
0.2 % + 2 mA
Deviation in regulation with
100 % change in load
Voltage
Current
5 x 10-4
2 x 10-4
5 x 10-4
2 x 10-4
2 x 10-4
      10-3
2 x 10-4
2 x 10-3
With change in line voltage
± 10 %
  5 x 10-5 5 x 10-5 5 x 10-5 5 x 10-5
Regulation time with change in load
from 20 % to 100 %
Tolerance: 0.2 % Urated
 

< 100 μs

< 100 μs

< 80 μs

< 80 μs
Residual ripple (10 Hz - 1 MHz) Voltage
Current
0.4 mVrms
300 μArms
0.4 mVrms
200 μArms
0.8 mVrms
100 μArms
1 mVrms
50 μArms
Measuring accuracy Voltage
Current
0.1 % + 25 mV
0.2 % + 10 mA
0.1 % + 30 mV
0.2 % + 4 mA
0.1 % + 40 mV
0.2 % + 2 mA
0.1 % + 200 mV
0.2 % + 2 mA
Temperature cormsicient Voltage
Current
10-4/K
10-4/K
10-4/K
10-4/K
10-4/K
10-4/K
10-4/K
10-4/K

Dual-output power supplies
Model
  TOE 8842-24 TOE 8842-32 TOE 8842-64 TOE 8842-130
Output data
Voltage
Current
2 x 0 - 24 V
2 x 0 - 6.5 A
2 x 0 - 32 V
2 x 0 - 5 A
2 x 0 - 64 V
2 x 0 - 2.5 A
2 x 0 - 130 V
2 x 0 - 1.2 A
Setting resolution Voltage
Current
10 mV
2 mA
10 mV
1 mA
20 mV
1 mA
100 mV
1 mA
Setting accuracy Voltage
Current
0.1 % + 15 mV
0.2 % + 4 mA
01 % + 20 mV
0.2 % + 2 mA
01 % + 20 mV
0.2 % + 2 mA
01 % + 100 mV
0.2 % + 2 mA
Deviation in regulation with
100 % change in load
Voltage
Current
2 x 10-4
2 x 10-4
2 x 10-4
5 x 10-4
10-4
10-3
10-4
2 x 10-3
With change in line voltage
± 10 %
  5 x 10-5 5 x 10-5 5 x 10-5 5 x 10-5
Regulation time with change in load
from 20 % to 100 %
Tolerance: 0.2 % Urated
 

< 80 μs

< 80 μs

< 80 μs

< 80 μs
Residual ripple (10 Hz - 1 MHz) Voltage
Current
0.4 mVrms
200 μArms
0.3 mVrms
100 μArms
0.6 mVrms
50 μArms
1 mVrms
25 μArms
Measuring accuracy Voltage
Current
0.1 % + 25 mV
0.2 % + 4 mA
0.1 % + 30 mV
0.2 % + 4 mA
0.1 % + 40 mV
0.2 % + 2 mA
0.1 % + 200 mV
0.2 % + 2 mA
Temperature cormsicient Voltage
Current
10-4/K
10-4/K
10-4/K
10-4/K
10-4/K
10-4/K
10-4/K
10-4/K

General data

Main outputs Floating and electrically isolated from the system interface
Insulation ± 250 V against ground
Output sockets On front of instrument with TOE 8840 On front of instrument and optionally at rear with TOE 8850.
Standby-circuit of power outputs directly selectable.
Line voltage 115 V/230 V ± 10 %, 47 Hz to 63 Hz
Power consumption Approx. 370 VA
Protective measures Protection class 1 in accordance with DIN 57411/VDE 0411 Part 1/IEC 348
Operating temperature 0 °C to 40 °C
Storage temperature -20 °C to 70 °C
Reference temperature 23 °C 
Warm-up time 30 min
Dimensions (WxHxD) 265 x 147 x 330 mm
Weight ca. 8 kg 
Housing Aluminium

Incremental spinwheel
Advantages:
- Wear-free in contrast to potentiometers
- Selection of digit for coarse/fine adjustment
- No maladjustment of setting when switched off
   ➝  protection of device-under-test when switching on the instrument

Safety/protective measures
- Polarity reversal prote
- Resistant to reverse current
- Overtemperature protection
- Keypad locking

Order informations + Options


Single-output power supplies
160 W

TOE 8841-24 Power supply  24 V /  6,5 A 
TOE 8841-32 Power supply  32 V /     5 A 
TOE 8841-40  Power supply   40 V /     4 A
TOE 8841-64 Power supply   64 V /  2,5 A 
TOE 8841-130 Power supply  130 V / 1,2 A

Dual-output power supplies
2 x 80 W

TOE 8842-24 Power supply  2 x 24 V /  3,2 A 
TOE 8842-32 Power supply  2 x 32 V /  2,5 A 
TOE 8842-40  Power supply   2 x 40 V /     2 A
TOE 8842-64 Power supply   2 x 64 V /  1,2 A 
TOE 8842-130 Power supply   2 x 130 V/ 0,6 A

Options

Single-output power supplies
Interfaces
TOE 8861/015 Remote control GPIB and RS 232
TOE 8861/016 Analog remote control
TOE 8861/017 Floating analog remote control

Dual-output power supplies
Interfaces
TOE 8862/015 Remote control GPIB and RS 232
TOE 8862/016 Analog remote control
TOE 8862/017 Floating analog remote control

Supplied accessories
- 1 power cord
- 1 instruction manual
- 1 RS 232 interface cable*

*only with TOE 8861/015 or TOE 8862/015 option

Free basic driver for LabViewTM found at the buttom.

The instruments of the TOE 8840 series can be equipped either with a GPIB/RS 232 or an analog remote control.
Simultaneous fitting of both options is not possible.

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