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

946 Products showing for Bench Power Supplies & Sources

1 of 48
In Stock
RS PRO Digital Bench Power Supply, 5-Output 0 V dc to 30V dc, 150 W, 5 A Max
  • RS Stock No. 175-7368
Subtotal (1 unit)
PHP12,048.59(exc. VAT)
PHP12,048.59/unit
In Stock
RS PRO Digital Bench Power Supply, 5-Output 0 V dc to 30V dc, 150 W, 5 A Max
  • RS Stock No. 175-7367
Subtotal (1 unit)
PHP14,130.98(exc. VAT)
PHP14,130.98/unit
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)
PHP20,603.86(exc. VAT)
PHP20,603.86/unit
In Stock
Rohde & Schwarz Module
  • RS Stock No. 184-9492
  • Mfr. Part No. NGL-K103
Subtotal (1 unit)
PHP35,867.94(exc. VAT)
PHP35,867.94/unit
Last RS stock
RS PRO Digital Bench Power Supply, 2-Output 0 V ac to 30V ac, 180 W, 3 A Max
  • RS Stock No. 123-3565
Subtotal (1 unit)
PHP22,533.16(exc. VAT)
PHP22,533.16/unit
In Stock
BK Precision Digital Bench Power Supply, 1-Output 0 V ac to 36V, 360 W, 10 A Max
  • RS Stock No. 817-2229
  • Mfr. Part No. BK1687B
Subtotal (1 unit)
PHP48,351.71(exc. VAT)
PHP48,351.71/unit
In Stock
RS PRO Bench Power Supply 155 V to 310V, 500 VA
  • RS Stock No. 642-959
Subtotal (1 unit)
PHP157,081.16(exc. VAT)
PHP157,081.16/unit
Temporarily out of stock
Camtec Bench Power Supply 0 V to 130V, 9.5 A Max
  • RS Stock No. 636-644
  • Mfr. Part No. HSEUiREG10001.130
Subtotal (1 unit)
PHP112,888.88(exc. VAT)
PHP112,888.88/unit
Temporarily out of stock
BK Precision Digital Bench Power Supply, 3-Output 0 V ac to 30V, 195 W, 3 A Max
  • RS Stock No. 121-7585
  • Mfr. Part No. BK9129B
Subtotal (1 unit)
PHP79,306.90(exc. VAT)
PHP79,306.90/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)
PHP48,746.24(exc. VAT)
PHP48,746.24/unit
Temporarily out of stock
TDK-Lambda Analogue Bench Power Supply 0 V dc to 20V dc, 760 W, 38 A Max
  • RS Stock No. 318-785
  • Mfr. Part No. GEN20-38/LN
Subtotal (1 unit)
PHP150,717.29(exc. VAT)
PHP150,717.29/unit
In Stock
TDK-Lambda Analogue Bench Power Supply 12.5 V to 12.5V, 750 W, 60 A Max
  • RS Stock No. 325-689
  • Mfr. Part No. GEN12.5-60/LN
Subtotal (1 unit)
PHP169,976.27(exc. VAT)
PHP169,976.27/unit
Stocked by manufacturer
RIGOL Digital Power Supply, 3-Output 0 V to 8V, 200 W, 5 A Max
  • RS Stock No. 781-316
  • Mfr. Part No. DP831
Subtotal (1 unit)
PHP31,608.38(exc. VAT)
PHP31,608.38/unit
Currently unavailable
Keysight Technologies B2900BL Series Source Meter, 1 μV to 21 V, 31.8W Output
  • RS Stock No. 210-0284
  • Mfr. Part No. B2901BL
Subtotal (1 unit)
PHP557,849.00(exc. VAT)
PHP557,849.00/unit
Temporarily out of stock
RS PRO Digital Bench Power Supply, 1-Output 0 V ac to 12V, 360 W, 30 A Max
  • RS Stock No. 288-9874
Subtotal (1 unit)
PHP49,735.64(exc. VAT)
PHP49,735.64/unit
Temporarily out of stock
BK Precision Digital Power Supply Unit, 1-Output 0 V to 300V, 500 VA, 12.6 A Max
  • RS Stock No. 857-801
  • Mfr. Part No. BK9812-220V
Subtotal (1 unit)
PHP209,682.46(exc. VAT)
PHP209,682.46/unit
Temporarily out of stock
Camtec Bench Power Supply 0 V to 130V, 5.5 A Max
  • RS Stock No. 636-613
  • Mfr. Part No. HSEUREG07201.130
Subtotal (1 unit)
PHP55,964.38(exc. VAT)
PHP55,964.38/unit
Stocked by manufacturer
Keysight Technologies E36150 Electronic Load Software
  • RS Stock No. 278-8834
  • Mfr. Part No. E36150ATMU
Subtotal (1 unit)
PHP81,705.84(exc. VAT)
PHP81,705.84/unit
Stocked by manufacturer
RIGOL Digital Power Supply, 1-Output 0 V to 8V, 200 W, 20 A Max
  • RS Stock No. 781-311
  • Mfr. Part No. DP813A
Subtotal (1 unit)
PHP60,641.52(exc. VAT)
PHP60,641.52/unit
Temporarily out of stock
Camtec Bench Power Supply 0 V to 150V, 12.5 A Max
  • RS Stock No. 636-652
  • Mfr. Part No. CPS-i1500.150
Subtotal (1 unit)
PHP121,479.11(exc. VAT)
PHP121,479.11/unit
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