The Aim-TTi EL303R Digital Bench Power Supply is a single-channel PSU utilising true linear regulation to provide the best possible performance. In addition to this, the Aim-TTi EL303R Digital Bench Power Supply includes switchable remote sensing and four-digit voltage and current meters with fixed resolutions for greater precision. However, it retains the easy-to-use analogue design of its predecessors: the Aim-TTi EL-Series of Digital Bench Power Supplies.
This model can provide a maximum power output of 90W. The Aim-TTi EL303R Digital Bench Power Supply has a voltage range of 0 to 30V and a current range of 0 to 3A.
The Aim-TTi EL303R Digital Bench Power Supply’s single output can be programmed to operate in either Constant Voltage or Constant Current mode with automatic crossover. The mode indicator will illuminate when the Aim-TTi EL303R Digital Bench Power Supply is in Constant Current mode.
The user can view preset voltage and current levels before connecting a load using the Aim-TTi EL303R Digital Bench Power Supply’s DC Output On/Off Switch.
The Aim-TTi EL303R Digital Bench Power Supply features analogue controls to enable the fast, easy, and accurate configuration of voltage and current levels. The Aim-TTi EL303R Digital Bench Power Supply features coarse and fine voltage controls and a logarithmic current control which enables low current levels to be set accurately.
Voltage and current information are viewable via the Aim-TTi EL303R Digital Bench Power Supply’s large, backlit display. To prevent misinterpretation of measurements, the Aim-TTi EL303R Digital Bench Power Supply is equipped with four-digit, fixed-resolution voltage, and current meters. The Aim-TTi EL303R Digital Bench Power Supply’s voltage meter has a fixed resolution of 10mV and the current meter has a fixed resolution of 1mA.
Remote sense terminals are essential for ensuring precise regulation of the load and true metering of the load. The Aim-TTi EL303R Digital Bench Power Supply incorporates remote sense terminals into its output; they can be switched on and off as required.
As previously mentioned, the Aim-TTi EL303R Digital Bench Power Supply utilises true linear regulation to provide high performance. As a result, the Aim-TTi EL303R Digital Bench Power Supply is equipped with excellent line and load regulation, good transient response, and very low output noise.
Moreover, to eliminate fan noise the Aim-TTi EL303R Digital Bench Power Supply utilises convection cooling.
Finally, to ensure compliance with a majority of laboratories’ safety regulations, as well as provide maximum connection flexibility, the Aim-TTi EL303R Digital Bench Power Supply’s output terminals accept 4mm safety plugs with rigid insulating sleeves, as well as bare wires and fork connectors.
The Aim-TTi EL303R Digital Bench Power Supply is a high-performance, practical, and precise PSU.
EX-R Model Range | |||
Voltage/Current Levels | EL301R | 0 to >30V; 0 to >1A | (30W nominal power) |
EL183R | 0 to >18V; 0 to >3.3A | (60W nominal power) | |
EL302R | 0 to >30V; 0 to >2A | (60W nominal power) | |
EL561R | 0 to >56V; 0 to >1.1A | (60W nominal power) | |
EL155R | 0 to >15V; 0 to >5A | (75W nominal power | |
EL303R | 0 to >30V; 0 to >3A | (90W nominal power | |
EL302RD | 2 x (0 to >30V; 0 to >2A) | (120W nominal power | |
EL302RT | 2 x (0 to >30V; 0 to >2A plus 1.5 to 5.0V @ 2A | (130W nominal power) | |
Output Specifications | |||
Output Setting & Control | Voltage Setting | By coarse and fine controls. | |
Current Setting | By single logarithmic control | ||
Output Mode | Constant voltage or constant current with automatic cross-over. CC indicator lit in constant current mode. |
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Output Switch | Electronic, non-isolating. Preset voltage and current limit are displayed when the Output is off. On state indicated by LED. | ||
Output Performance | Ripple & Noise | Typically <1mV rms, (CV mode, 20MHz bandwidth) | |
Load Regulation | <0·01% of maximum output for a 90% load change (using remote sense). | ||
Line Regulation | <0·01% of maximum output for 10% line change | ||
Transient Response | <50µs to within 50mV of setting for a 5% to 95% load change | ||
Temp. Coefficient | Voltage: typically <100ppm /°C. | ||
Output Protection | Output will withstand forward voltages of up to 20V above rated output voltage. Reverse protection by diode clamp for currents to 3A. |
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Output Connections | Output Terminals | Universal 4mm safety binding posts on 19mm (0·75”) spacing | |
Note | Terminals can accept fixed shroud 4mm plugs, standard 4mm plugs, fork terminals, and bare wires | ||
Remote Sense | Sense Selection | Voltage sensing is selected as Local or Remote by the front panel switch. | |
Sense Terminals | Sprung loaded screw-less terminals | ||
Meter Specifications | |||
Display Type | Dual 4-digit meters, 14mm (0·56”) LED | ||
Voltage Meter | Resolution | 10mV | |
Accuracy | 0·3% of reading ± 3 digits | ||
Current Meter | Resolution | 1mA | |
Accuracy | 0·5% of reading ± 3 digits | ||
Auxiliary Output (EL302RT only) | |||
Voltage | Variable <1.5V to >5V by front panel control. | ||
Meter accuracy | 0.3% ± 4 digits. | ||
Current limit | 2A minimum | ||
Load regulation | <3% for 90% load change | ||
Line regulation | <0.2% for 10% line voltage change | ||
Ripple & Noise | Typically <5mVrms, <15mVpk-pk (20MHz bandwidth) | ||
Output Protection | Output will withstand up to 7V forward voltage. Diode clamp reverse protection for currents up to 3A |
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Output Terminals | Universal 4mm safety binding posts on 19mm (0·75”) spacing | ||
Status Indication | UNREG lamp | ||
General Specifications | |||
Input | AC Input | 230V AC or 115V AC ± 10%, 50/60Hz. Installation Category II | |
VA Ratings |
EL301R - 85 VA; EL302R, EL302P, EL183R, EL561R - 160VA; |
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Temperature & Environmental | Operating Range | +5ºC to +40ºC, 20% to 80% RH | |
Storage Range | -40ºC to + 70ºC | ||
Environmental | Indoor use at altitudes up to 2000m, Pollution Degree 2 | ||
Cooling | Silent fan-less convection cooling. | ||
Safety & EMC | Safety | Complies with EN61010-1 | |
EMC | Complies with EN61326 | ||
Physical | Size | Single output models - 140x160x320 mm (WxHxD). Dual and triple output models - 260x160x295 mm (WxHxD) |
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Weight | EL301R - 3.4kg; EL302R, EL302P, EL183R, EL561R - 4.4kg: EL155R, EL303R - 5.0kg; EL302RD, EL302RT - 7.5kg. |