Bench Power Supplies & Sources

This handy piece of equipment is used when a power source is required that can be set up on the workbench, with its own power cord and method of output connection. They're useful in electronics for applications such as testing circuits that need a power source at different voltages.

Variable power supplies

Bench power supplies are available in variable or fixed voltage. A variable power supply will offer the ability to adjust the output, be that voltage, resistance, current or power and is ideal where versatility is required in an application, such as circuit testing. Variable power supplies have a feature called Current Limiting so it will shut down or limit current to the maximum rating. They normally have controls to allow the change of current from zero to the specified maximum current which helps to protect components.

Linear and switching power supplies

Bench power supplies are available in two different designs:

  • Linear Power Supplies – electrical or ripple noise is lower and easier to contain. Linear power supplies are more suitable for powering sensitive circuitry and generate more heat, resulting in lower energy efficiency. Linear supplies are heavier because the 50 Hz or 60 Hz transformer and associated filters are physically larger.
  • Switching Power Supplies – normally a better option for portable applications and they are lighter and more compact units. Switch-mode power supplies start out the same way as Linear, rectifying and filtering AC line input voltage, however they "switch" the DC into high-frequency AC. Switching power supplies can also tolerate small losses of power without affecting output, unlike Linear power supplies and be more energy efficient.

Choosing a Bench Power Supply

Wondering how many channels you need? Will depend on how many supplies you want to use simultaneously, but at least two channels are normal practise for a bench power supply.

  • Energy efficiency – normally detailed in the specifications or supplier's datasheet.
  • Line Regulation – Expressed as a percentage, this shows change in the output voltage relative to changes in the input line voltage.
  • Load Regulation – is the measure to ensure that the output voltage is constant despite load variations. A good load regulation ensures that output voltage doesn't fluctuate when loads increase or are removed. This is important where test results cannot be repeated.
Bench Power Supplies
Bench Power Supplies
Bench Power Supply & Source Accessories
Bench Power Supply & Source Accessories
Current & Voltage Calibrators
Current & Voltage Calibrators
Electronic Load Software
Electronic Load Software
Electronic Loads
Electronic Loads
Load Banks
Load Banks
Source Meters
Source Meters

1839 Products showing for Bench Power Supplies & Sources

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1 of 92
In Stock
RS PRO Digital Bench Power Supply, 1-Output 0 V dc to 30V dc, 150 W, 5 A Max
  • RS Stock No. 175-7367
Subtotal (1 unit)
Kr. 1 170,94(exc. VAT)
Kr. 1 170,94/unit
In Stock
RS PRO Electronic DC Load, 0 to 300 W, 0 to 150 V, 0 to 30 A
  • RS Stock No. 254-4056
Subtotal (1 unit)
Kr. 7 831,36(exc. VAT)
Kr. 7 831,36/unit
In Stock
RS PRO Digital Bench Power Supply, 1-Output 0 V dc to 30V dc, 150 W, 5 A Max
  • RS Stock No. 175-7368
Subtotal (1 unit)
Kr. 1 869,06(exc. VAT)
Kr. 1 869,06/unit
In Stock
RS PRO Digital Bench Power Supply, 1-Output 0 V ac to 60V, 300 W, 5 A Max
  • RS Stock No. 175-7365
Subtotal (1 unit)
Kr. 2 467,56(exc. VAT)
Kr. 2 467,56/unit
In Stock
RS PRO Digital Bench Power Supply, 3-Output 0 V ac to 32V, 220 W, 3.2 A Max
  • RS Stock No. 123-6467
Subtotal (1 unit)
Kr. 4 312,10(exc. VAT)
Kr. 4 312,10/unit
In Stock
EA Elektro-Automatik Bench Power Supply, 1-Output 0 V to 80V, 3 kW, 100 μA Max
  • RS Stock No. 885-6659
  • Mfr. Part No. EA-PS 9080-100 1U
Subtotal (1 unit)
Kr. 34 917,00(exc. VAT)
Kr. 34 917,00/unit
In Stock
RS PRO Digital Bench Power Supply, 3-Output 0 V to 30V, 5 A Max
  • RS Stock No. 180-8785
Subtotal (1 unit)
Kr. 3 220,54(exc. VAT)
Kr. 3 220,54/unit
In Stock
BK Precision 8550 Series Electronic Load, 350 W, 150 V, 60 A
  • RS Stock No. 286-1146
  • Mfr. Part No. BK8551
Subtotal (1 unit)
Kr. 14 375,50(exc. VAT)
Kr. 14 375,50/unit
In Stock
Aim-TTi Digital Bench Power Supply, 2-Output 0 V ac to 35V, 280 W, 4 A Max
  • RS Stock No. 665-4903
  • Mfr. Part No. EX354RD
Subtotal (1 unit)
Kr. 7 937,87(exc. VAT)
Kr. 7 937,87/unit
In Stock
RS PRO Digital Bench Power Supply, 3-Output 0 V to 30V, 5 A Max, RSCAL
  • RS Stock No. 180-8851
Subtotal (1 unit)
Kr. 3 991,28(exc. VAT)
Kr. 3 991,28/unit
In Stock
BK Precision 8500B Series Electronic Load, 0 to 300 W, 0/150 V, 0 to 30 A
  • RS Stock No. 192-4570
  • Mfr. Part No. BK8500B
Subtotal (1 unit)
Kr. 15 318,16(exc. VAT)
Kr. 15 318,16/unit
In Stock
Aim-TTi Digital Bench Power Supply, 1-Output 0 V ac to 60V, 1.2 kW, 50 A Max
  • RS Stock No. 731-2852
  • Mfr. Part No. QPX1200SP
Subtotal (1 unit)
Kr. 21 872,48(exc. VAT)
Kr. 21 872,48/unit
In Stock
BK Precision Analogue Bench Power Supply, 1-Output 0 V to 60V, 200 W, 10 A Max
  • RS Stock No. 240-6661
  • Mfr. Part No. BK9201B
Subtotal (1 unit)
Kr. 10 475,26(exc. VAT)
Kr. 10 475,26/unit
In Stock
Aim-TTi Digital Bench Power Supply, 2-Output 0 V ac to 60V, 360 W, 10 A Max
  • RS Stock No. 804-0419
  • Mfr. Part No. CPX200DP
Subtotal (1 unit)
Kr. 15 910,41(exc. VAT)
Kr. 15 910,41/unit
In Stock
BK Precision Digital Bench Power Supply, 3-Output 0 V ac to 30V ac, 158 W, 5 A Max
  • RS Stock No. 817-2226
  • Mfr. Part No. BK1671A
Subtotal (1 unit)
Kr. 3 641,01(exc. VAT)
Kr. 3 641,01/unit
In Stock
Aim-TTi Digital Bench Power Supply, 1-Output 0 V ac to 35V, 175 W, 5 A Max
  • RS Stock No. 665-4909
  • Mfr. Part No. EX355R
Subtotal (1 unit)
Kr. 5 442,12(exc. VAT)
Kr. 5 442,12/unit
Currently unavailable
RS PRO Digital Bench Power Supply, 1-Output 0 V ac to 24V, 360 W, 15 A Max, RSCAL
  • RS Stock No. 561-305
Subtotal (1 unit)
Kr. 6 571,34(exc. VAT)
Kr. 6 571,34/unit
In Stock
BK Precision Digital Bench Power Supply, 1-Output 0 V ac to 15V, 600 W, 40 A Max
  • RS Stock No. 175-2528
  • Mfr. Part No. BK1692
Subtotal (1 unit)
Kr. 5 184,61(exc. VAT)
Kr. 5 184,61/unit
In Stock
Aim-TTi Digital Bench Power Supply, 2-Output 0 V ac to 30V ac, 180 W, 3 A Max
  • RS Stock No. 457-740
  • Mfr. Part No. PL303QMD
Subtotal (1 unit)
Kr. 9 959,89(exc. VAT)
Kr. 9 959,89/unit
Last RS stock
EA Elektro-Automatik Digital Bench Power Supply, 1-Output, 1 kW
  • RS Stock No. 138-6095
  • Mfr. Part No. EA-PS 9500-06 T
Subtotal (1 unit)
Kr. 24 442,00(exc. VAT)
Kr. 24 442,00/unit
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