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 Loads
Electronic Loads
Load Banks
Load Banks

148 Products showing for Bench Power Supplies & Sources

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1 of 8
Stocked by manufacturer
RIGOL Digital Power Supply, 1-Output 0 V to 30V, 150 W, 5 A Max
  • RS Stock No. 781-415
  • Mfr. Part No. DP711
Subtotal (1 unit)
$514.64(exc. GST)
$514.64/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)
$1,236.81(exc. GST)
$1,236.81/unit
In Stock
BK Precision Power Supply Test Lead Set for Use with 9115 Series Multi-Range Programmable DC Power Supplies
  • RS Stock No. 209-9657
  • Mfr. Part No. TLPS
Subtotal (1 unit)
$125.28(exc. GST)
$125.28/unit
In Stock
Arcol FFLB-5KW 230V Resistive Portable Load Bank 5 kW, 1.08 A, 21.7 A
  • RS Stock No. 184-9572
  • Mfr. Part No. FFLB-5KW 230V
Subtotal (1 unit)
$2,586.22(exc. GST)
$2,586.22/unit
In Stock
RS PRO 133 Current & Voltage Calibrator, Max Voltage 24V 24 mA
  • RS Stock No. 174-9556
Subtotal (1 unit)
$995.77(exc. GST)
$995.77/unit
In Stock
RS PRO CC421-G Current & Voltage Calibrator, Max Voltage 199.9V dc 24 mA
  • RS Stock No. 123-8769
Subtotal (1 unit)
$596.11(exc. GST)
$596.11/unit
Stocked by manufacturer
RIGOL Digital Power Supply, 1-Output 0 V to 50V, 150 W, 3 A Max
  • RS Stock No. 781-414
  • Mfr. Part No. DP712
Subtotal (1 unit)
$514.64(exc. GST)
$514.64/unit
Currently unavailable
RND Digital Bench Power Supply, 1-Output 0 V to 30V, 150 W, 5 A Max
  • RS Stock No. 283-2741
  • Mfr. Part No. RND 320-KD3005P
Subtotal (1 unit)
$165.62(exc. GST)
$165.62/unit
In Stock
Aim-TTi Digital Bench Power Supply, 2-Output 0 V ac to 60V, 840 W, 20 A Max
  • RS Stock No. 707-2857
  • Mfr. Part No. CPX400DP
Subtotal (1 unit)
$3,640.63(exc. GST)
$3,640.63/unit
In Stock
BK Precision Digital Bench Power Supply, 4-Output 32 V to 32V, 300 W, 9.5 A Max
  • RS Stock No. 339-174
  • Mfr. Part No. MPS1302
Subtotal (1 unit)
$3,034.90(exc. GST)
$3,034.90/unit
Stocked by manufacturer
RIGOL Digital Power Supply, 1-Output 0 V to 20V, 200 W, 10 A Max
  • RS Stock No. 781-406
  • Mfr. Part No. DP811A
Subtotal (1 unit)
$1,292.20(exc. GST)
$1,292.20/unit
In Stock
Camtec Bench Power Supply 0 V to 300V, 6.3 A Max
  • RS Stock No. 636-653
  • Mfr. Part No. CPS-i1500.300
Subtotal (1 unit)
$3,070.59(exc. GST)
$3,070.59/unit
In Stock
Aim-TTi LD400 Series Electronic Load, 0 to 400 W, 0/80 V, 0 to 80 A
  • RS Stock No. 837-7544
  • Mfr. Part No. LD400P
Subtotal (1 unit)
$3,012.29(exc. GST)
$3,012.29/unit
Stocked by manufacturer
RIGOL Digital Power Supply, 3-Output 0 V to 30V, 195 W, 3 A Max
  • RS Stock No. 781-314
  • Mfr. Part No. DP832
Subtotal (1 unit)
$789.81(exc. GST)
$789.81/unit
Temporarily out of stock
BK Precision HVL Series Electronic DC Load, 6 kW, 600 V, 300 A
  • RS Stock No. 119-893
  • Mfr. Part No. HVL600300
Subtotal (1 unit)
$27,340.40(exc. GST)
$27,340.40/unit
In Stock
Arcol FFLB-1KW 230V Resistive Portable Load Bank 1 kW, 1 A, 1.08 A
  • RS Stock No. 184-9568
  • Mfr. Part No. FFLB-1KW 230V
Subtotal (1 unit)
$1,222.63(exc. GST)
$1,222.63/unit
Stocked by manufacturer
RIGOL Digital Power Supply, 3-Output 0 V to 32V, 210 W, 3 A Max
  • RS Stock No. 781-307
  • Mfr. Part No. DP932U
Subtotal (1 unit)
$942.42(exc. GST)
$942.42/unit
In Stock
Camtec Bench Power Supply 0 V to 130V, 3.7 A Max
  • RS Stock No. 636-606
  • Mfr. Part No. HSEUREG04801.130
Subtotal (1 unit)
$1,175.90(exc. GST)
$1,175.90/unit
In Stock
PeakTech Laboratory Power Supply 1 V to 15V, 75 W, 5 A Max
  • RS Stock No. 288-8667
  • Mfr. Part No. P6125
Subtotal (1 unit)
$863.45(exc. GST)
$863.45/unit
In Stock
RS PRO Bench Power Supply 200 V to 400V, 3000 VA
  • RS Stock No. 642-964
Subtotal (1 unit)
$16,104.74(exc. GST)
$16,104.74/unit
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