LPS 305
Digital Linear Power Supply
Bench Power Supplies
LPS305 Power Supply
  • True constant voltage and constant current performance
  • 12-bit D/A converter
  • Backlit LCD - voltage and current are displayed simultaneously
  • Software calibration
  • Sophisticated cooling system
  • RS232 output interface
  • Audible overload warning and status change indication
  • Up/down key for easy setting
  • Numeric keyboard for direct setting
  • Three output channels
    • – 2 independently adjustable
    • – 1 fixed (5V or 3.3V selectable)


Test Leads Connected

The LPS 305 power supply's smart microprocessor technology & features make it very easy to use. The settings are kept in a memory, so when turned on, the voltage, current and output options are just as they were when you turned it off. The LPS305 is software calibrated to provide years of trouble free service and for instrument & load protection, has audible feedback to warn if output exceeds maximum load.

LPS305 Power Supply Front
LPS305 Power Supply buttons

Use the keypad to easily select exact
voltage and current settings.

LPS305 Power Supply Rear

The intelligent cooling system turns on automatically when the power rating exceeds a preset value.

LPS305 LCD Display

The clear LCD simultaneously displays positive & negative voltages and currents, along with the constant voltage/constant current status of each. The output mode (independent or tracking) & the fixed output (5V or 3.3V) are indicated on the right hand side.

LPS305 Power Supply Outputs

Output sockets

*15% GST applicable for sales within NZ

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Output Voltage0 to +30V/ 0 to -30V Fixed 3.3 V/5 V
Setting Resolution10mV
Max Output Voltage+32/-32V
Dual Tracking0 to ±30V
Tracking Deviation±20mV
Output Current 0 to +2.5 A/0 to -2.5A 3A
Setting Resolution1mA
Max. output current +3 A/-3A CL = 3.3A
Dual Tracking0 to ±2.5A
Tracking Deviation±5mA
Line Regulation
(for a change of 10% AC)
1mV 5mV
Load Regulation
(100% Load Change)
2mV 10mV
Ripple Noise RMS
(10 Hz to 20MHz)
Ripple/Noise Peak
(10 Hz to 20MHz)
10mV p-p 20mV p-p
Transient Response200µs typical
Temp Coefficient 100ppm/°C typical
Line Regulation (10% AC)15mA typical
Load Regulation
100% Load Change)
10mA typical
Ripple/Noise RMS
(10Hz to 20MHz)
1mA RMS typical
Ripple/Noise Peak
(10Hz to 20MHz)
5mA p-p typical
Temp Coefficient200ppm/°C typical
Display16 character x 2 line backlit LCD; front-panel status indicator with beeper
Voltage Accuracy*±(0.2% Rdg + 2 Dgts)
Current Accuracy* ±(0.5% Rdg + 5 Dgts)
Common-Mode Voltage ±240VDC
Temp RatingsOperating: 0 to 40ºC, Storage: -40 to 70ºC
(less than 80% RH)
Dimensions 132(H) x 213(W) x 399mm
WeightApprox. 8.2kg
CoolingIntelligently controlled forced air
Power 230VAC ±10% @ 47~63Hz. 250W
InterfaceRS232; factory installed
AccessoriesInstruction manual, power cord, fuse

*For output less than 5% of rated output, add 5 digits to the accuracy specifications.