TOE 8941
Laboratory Power Supplies up to 200 W
Compact power supply for your applications in the field of:
- Research / development
- Laboratory / testing / experiments
- Production / test bays
- Quality assurance
- Service / training
200 W in compact design
The TOE 8941 series single-output power supplies have an extreme compact design. As a result of the high efficiency of all units, the complete output power of 200 W is available at the front via safety sockets. A rear output via a screw-type terminal block is optional.
Autoranging
Power supplies with autoranging can source their rated power over a wide and stepless range of voltage and current combinations.
Autoranging power supplies from TOELLNER have a significantly larger operating range than standard power supplies with the same output power.
 |
| Autorange TOE 8941-40 |
Adjustment using incremental spinwheels
The output values are adjusted with a selectable resolution using wear-free incremental spinwheels, guaranteeing reliable and precise setting of all output parameters and operating functions even after many years of use.
Display
The set and measured values for voltage, current and power as well as the menu control functions are output on a 2-row LCD with 20 characters/row.
Highest degree of safety
is guaranteed for your applications by comprehensive protective measures: adjustable overvoltage protection, limit function, fast power OFF switching, polarity reversal protection, resistance to reverse current, various internal electronic monitoring functions.
Innovative remote sensing circuit
Benefit from an innovative sensing circuit which keeps the correct voltage at the input terminals of the load. Additionally it protects sensitive loads if there is a break in the sensor line. The sensing inputs are available at the rear.
Adjustable output power
The possibility for directly setting the power is a further exceptional feature of this series. The output power of 200 W can then be reduced down to 5 % of the maximum output power.
Digital and analog control interfaces
Digital: GPIB / USB / LAN
GPIB, USB and LAN interface with the following scope of functions are available for communication between PC and power supply (option):
- Adjustment of output values: voltage, current and power
- OVP and limit adjustment, autocal function, display, store and recall settings
- Switching on/off of output v
- Reading of actual values as well as warning/fault statesde
The command syntax complies with the IEEE 488.2 standard. Standardized SCPI commands are processed.
Fast analog control
The power supplies can be controlled in analog mode; i.e. the output voltage and current can be adjusted independent of one another using externally applied control voltages.
Short adjustment times for the output voltage are implemented using balanced circuitry.
It is therefore possible to generate powerful and fast output signals without problem; up to approx. 700 Hz at 2 Vpp.
Interlock
By interrupting the interlock circuit, e.g. by an external emergency stop switch, the power supply output becomes deenergized directly.
Output ON/OFF
A convenient feature is the output switchoff function which at standby permits immediate reduction of the voltage and current values to 0 V and 0 A. When the output key is activated, the set or programmed values for voltage and current are present immediately. The switchover can be carried out manually, via a remote control command from the PC, via an external TTL signal1) or via an external switching contact1).
1) Interlock or inhibit option required
Autocal-funktion
The power supplies are equipped with a self-calibration function protected by a ”security code”. This function can be manually executed from a menu or also remote-controlled.
Price and performance
The exceptional specifications, extraordinary features, and best possible processing quality provide the power supplies of the TOE 8941 series with an excellent price/performance ratio.is.
Options
- GPIB, USB, and LAN interfaces
- Interlock
- Inhibit
- Power output at rear
Special features
- Active wide range PFC: Input voltage 85 V to 265 V, 47 to 63 Hz
- Autoranging
- Analog interfaces included as standard
- USB, LAN, and GPIB interfaces optional
- Output at front, rear output optional
- On/off switching of the output
- ½ 19“ weight, 2 HU design parallel installation possible
- Sensing
- Free LabView™ driver
- Can be used as constant voltage, constant current and constant power source (CV/CC/CP)
| Voltage | Current | Power | |
| TOE 8941-20 | 0 - 20 V | 0 - 20 A | 200 W |
| TOE 8941-40 | 0 - 40 V | 0 - 10 A | 200 W |
| TOE 8941-60 | 0 - 60 V | 0 - 7 A | 200 W |
| TOE 8941-80 | 0 - 80 V | 0 - 5 A | 200 W |
| TOE 8941-130 | 0 - 130 V | 0 - 3 A | 200 W |
Outputs
- Floating for all models
- Safety sockets at front
- Optional outputs at rear on screw terminal block
| Output | TOE 8941-20 | TOE 8941-40 | TOE 8941-60 | TOE 8941-80 | TOE 8941-130 |
| Voltage | 0 - 20 V | 0 - 40 V | 0 - 60 V | 0 - 80 V | 0 - 130 V |
| Current | 0 - 20 A | 0 - 10 A | 0 - 7 A | 0 - 5 A | 0 - 3 A |
| Power adjustable in range | 10 - 200 W | 10 - 200 W | 10 - V 200 W | 10 - 200 W | 10 - 200 W |
| Setting resolution Voltage Current Power |
5 mV 5 mA 0.1 W |
10 mV 2 mA 0.1 W |
10 mV 1 mA 0.1 W |
20 mV 1 mA 0.1 W |
20 mV 1 mA 0.1 W |
| Setting accuracy Voltage Current Power |
0.1 % + 10 mV 0.2 % + 20 mA 0.4 % + 1 W |
0.1 % + 20 mV 0.2 % + 10 mA 0.4 % + 1 W |
0.1 % + 30 mV 0.2 % + 7 mA 0.4 % + 1 W |
0.1% + 40 mV 0.2 % + 5 mA 0.4 % + 1 W |
0.1% + 60 mV 0.2 % + 3 mA 0.4 % + 1 W |
| Deviation in regulation with 100 % change in load Voltage Current |
10-4 + 5 mV 5 x 10-4 + 10 mA |
10-4 + 5 mV 5 x 10-4 + 5 mA |
10-4 + 5 mV 5 x 10-4 + 3 mA |
10-4 + 5 mV 5 x 10-4 + 2 mA |
10-4 + 5 mV 5 x 10-4 + 1.5 mA |
| With change in line voltage 85 V — 265 V | < 0.5 mV | < 0.5 mV | < 0.5 mV | < 0.5 mV | < 1 mV |
| Regulation time with change in load from 20 % to 100 % Irated Tolerance: 0.2 % Urated |
100 μs |
100 μs |
100 μs |
100 μs |
100 μs |
| Setting time of output voltage with change in setpoint 0 V to Vrated no-load/full load Vrated to 1 V no-load/full load |
6 ms/10 ms 30 ms/8ms |
8 ms/10 ms 50 ms/10 ms |
10 ms/15 ms 100 ms/25 ms |
15 ms/20 ms 200 ms/50 ms |
50 ms/60 ms 1.5 s/400 ms |
| Residual ripple (rms) 10 Hz to 10 MHz Voltage Current |
3mV 12 mA |
3 mV 10 mA |
6 mV 7 mA |
10 mV 5 mA |
12 mV 2 mA |
| Measuring accuracy Voltage Current Power |
0.1 % + 20 mV 0.2 % + 30 mA 0.4 % + 1 W |
0.1 % + 30 mV 0.2 % + 20 mA 0.4 % + 1 W |
0.1 % + 45 mV 0.2 % + 10 mA 0.4 % + 1 W |
0.1 % + 60 mV 0.2 % + 7 mA 0.4 % + 1 W |
0.1 % + 80 mV 0.2 % + 5 mA 0.4 % + 1 W |
| Temperature coefficient 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 |
10-4/K 10-4/K |
| Analog interface Control voltage (reference potential is the negative pole of the output) 0 - 5 V for 0 - 5 V for |
0 - 20 V 0 - 20 A |
0 - 40 V 0 - 10 A |
0 - 60 V 0 - 7 A |
0 - 80 V 0 - 5 A |
0 - 130 V 0 - 3 A |
| Protection functions Adjustment range for OVP Adjustment range for limit |
3 - 22 V 0 - 20 V |
3 - 44 V 0 - 40 V |
3 - 66 V 0 - 60 V |
3 - 88 V 0 - 80 V |
3 - 143 V 0 - 130 V |
| Resistant to feedback Voltage Current |
100 V 20 A |
100 V 10 A |
100 V 7 A |
100 V 5 A |
160 V 3 A |
| Output Insulation |
Floating and electrically isolated ± 250 V against ground |
| Analog interface Control voltage Input impedance |
0 - 5 V each for 0 - Vmax bzw. 0 - Imax Approx. 10 kOhm |
| Line voltage | 85 V to 265 V, 47 Hz to 63 Hz |
| Power consumption | Approx. 250 VA / 250 W |
| Protective measures | Protection class 1 in accordance with DIN EN 61010-1 |
| EMC | EN 61326 |
| Operating temperature | 0 °C to 40 °C |
| Storage temperature | -20 °C bis 70 °C |
| Reference temperature | 23 °C ± 1 °C |
| Dimensions with feet |
224 x 88 x 357 mm (W x H x D) 224 x 103 x 357 mm (W x H x D) |
| 19" system | ½ 19", 2 HU |
| Weight | Approx. 5 kg |
| Housing | Aluminium/steel |
Order Information
| TOE 8941-20 | Power supply | 20 V / 20 A |
| TOE 8941-40 | Power supply | 40 V / 10 A |
| TOE 8941-60 | Power supply | 60 V / 7 A |
| TOE 8941-80 | Power supply | 80 V / 5 A |
| TOE 8941-130 | Power supply | 130 V / 3 A |
Optional
| TOE 8940/015 | GPIB interface |
| TOE 8940/025 | USB interface |
| TOE 8940/035 | LAN and USB interface |
| TOE 8940/251 | output at rear |
Interlock/inhibit options
The interlock and inhibit control options permit external enabling or OFF/ON switching of the main output by means of a switch or a TTL signal.
Interlock option TOE 8940/101
| Control via contact |
Control via TTL-Signal |
Power supply output |
| Close | Low | ON |
| Open | High | OFF |
Interlock option TOE 8940/101
| Control via contact |
Control via TTL-Signal |
Power supply output |
| Close | Low | OFF |
| Open | High | ON |
Cable and adapters
| TOE 9101 | USB/GPIB adpter |
| TOE 9009 | IEEE-488 cable, 2 m |
| TOE 9521 | 19" adapter, 2 HU asymetric for single |
| TOE 9522 | 19" adapter, 2 HU parallel installation set for 2 units |
Supplied accessories
- 1 Power cord
- 1 instruction manual
 |
| 19" adapter, TOE 9522 2 HU, parallel installation set for 2 units of the TOE 8941 series |