Bench Power Supplies

A bench power supply is an essential piece of equipment if you do a lot of electronics or other powered projects on your bench and need a reliable source of power at different voltages. They are very useful tools in testing circuits, as they allow you to adjust the voltage to a specific value depending on what project you are working on. A variable DC bench power supply also allows you to set a maximum current, so if there is a short circuit in your project the bench supply will shut down hopefully preventing any harm to some components in your project. Bench power supplies are versatile, accurate and stable and don’t cost too much.

When it comes to power you have 4 units to be aware of, Current, Voltage, Power and Resistance. It's very important that if you are supplying your circuit with some voltage, your supply can keep up with the current drawn.

Types Of Power Supplies

There are two basic types of power supplies in common use: linear and switch-mode. Both are available for use as bench DC power supplies.

Linear power supplies operate by rectifying AC line power to create DC and then filtering and regulating it to produce a user-selectable voltage or current levels. Linear supplies are heavier because the 50 Hz or 60 Hz transformer and associated filters are physically larger.

Switch-mode power supplies start out the same way, rectifying and filtering AC line input voltage, however, they chop (or "switch") the DC into high-frequency AC. Switch-mode power supplies are significantly smaller, lighter and more efficient than linear power supplies, so they have replaced linear supplies in many applications.

Areas of application:

  • General laboratory
  • Education
  • Industry
  • Research
  • Production
  • Workshops

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Description Price Output Voltage Bench Power Supply Type Model Number Output Current Number of Outputs Type Power Rating Supply Voltage Number of Displays Input Connector Output Connector Calibrated Minimum Temperature Maximum Temperature
RS Stock No. 885-3708
Mfr. Part No.E3631A + AT90DH
MYR7,563.57
1 Kit
Kit(s)
6 V, 25 V - - 1 A, 5 A 3 Digital 80W 100 V ac, 115 V ac, 230 V ac 2 IEC 320 Binding Post Terminal - 0°C +40°C
RS Stock No. 756-8821
Mfr. Part No.EA-PS 2042-20B
MYR1,858.11
Each
units
0 → 42V Laboratory Power Supply - 20A 1 Digital 320W 100 → 240V ac 2 IEC 320 4 mm Safety Socket - 0°C +50°C
RS Stock No. 705-5004
Mfr. Part No.PWS2323
BrandTektronix
MYR2,515.52
Each
units
0 → 30V Adjustable Power Supply - 3A 1 Digital - 110 V ac, 220V ac 2 IEC 320 Binding Post Terminal - 0°C +40°C
RS Stock No. 667-7378
Mfr. Part No.E3643A
MYR5,032.71
Each
units
0 → 60V Programmable DC Power Supply - 1.4 A, 800mA 1 Digital 49W 110 V ac, 230V ac 2 IEC 320 Binding Post Terminal - 0°C +55°C
RS Stock No. 803-0181
Mfr. Part No.EA-PS 9360-30 2U
MYR15,889.92
Each
units
0 → 360V Laboratory Power Supply - 30A 1 Analogue, Digital 0 → 3000W 180 → 264V ac 1 IEC 320 4 mm Safety Socket - 0°C +50°C
RS Stock No. 122-5037
BrandRS PRO
MYR1,356.07
Each
units
0 → 30V Multiple Output DC Power Supply - 3A 2 Digital 192W 100 V ac, 110 V ac, 120 V ac, 220 V ac, 230V ac 1 IEC 320 4 mm Safety Socket - 0°C +40°C
RS Stock No. 707-2869
Mfr. Part No.PLH120P
BrandAim-TTi
MYR3,528.44
Each
units
0 → 120V Laboratory Power Supply - 750mA 1 Digital 90W 115 V ac, 230V ac 2 IEC 320 Binding Post Terminal - +5°C +40°C
RS Stock No. 667-7384
Mfr. Part No.E3646A
MYR6,304.23
Each
units
0 → 20 V, 0 → 8V Programmable DC Power Supply - 1.5 A, 3A 2 Digital 24W 110 V ac, 230V ac 2 IEC 320 Binding Post Terminal - 0°C +55°C
RS Stock No. 121-7539
Mfr. Part No.BK1900B
MYR3,506.29
Each
units
16V Switching Power Supply - 60A 2 Digital 960W 110 V ac, 230V ac 2 IEC 320 Binding Post Terminal - 0°C +40°C
RS Stock No. 731-2855
Mfr. Part No.QPX600D
BrandAim-TTi
MYR10,349.80
Each
units
0 → 80V Dual Range Power Supply - 0 → 50A 2 Digital 600W 110 → 240V ac 2 IEC 320 Binding Post Terminal - +5°C +40°C
RS Stock No. 753-1453
Mfr. Part No.QL564P SII
BrandAim-TTi
MYR4,013.68
Each
units
0 → 56V Precision DC Power Supply - 2 A, 4A 1 Digital 112W 115 V ac, 230V ac 2 IEC 320 Binding Post Terminal - +5°C +40°C
RS Stock No. 665-4886
Mfr. Part No.EL302R
BrandAim-TTi
MYR1,690.15
Each
units
0 → 30V Laboratory Power Supply - 0 → 2A 1 Digital 60W 115 V ac, 230V ac 2 IEC 320 Binding Post Terminal - +5°C +40°C
RS Stock No. 878-2084
Mfr. Part No.BK9110
MYR1,734.32
Each
units
60V Multi Range DC Power Supply - 5A 1 Digital 100W 110 V ac, 220V ac 2 IEC 320 Binding Post Terminal - 0°C +40°C
RS Stock No. 813-3622
Mfr. Part No.2260B-80-13
BrandKeithley
MYR8,865.93
Each
units
0 → 80V Programmable DC Power Supply - 13.5A 1 Digital 360W 100 → 240V ac 1 IEC 320 Plug-In Terminal Block - - -
RS Stock No. 121-7530
Mfr. Part No.BK1694
MYR2,636.73
Each
units
30V Switching Power Supply - 30A 1 Digital 900W 100 V ac, 240V ac 2 IEC 320 Binding Post Terminal - 0°C +40°C
RS Stock No. 123-3579
BrandRS PRO
MYR1,779.46
Each
units
0 → 60V Switching Power Supply - 6A 1 Digital 360W 115 V ac, 230V ac 2 IEC 320 Plug-In Terminal Block - 0°C +40°C
RS Stock No. 665-4906
Mfr. Part No.EL302RT
BrandAim-TTi
MYR2,699.22
Each
units
0 → 30V Laboratory Power Supply - 2A 3 Digital 130W 115 V ac, 230V ac 4 IEC 320 Binding Post Terminal - +5°C +40°C
RS Stock No. 155-383
Mfr. Part No.PL155
BrandAim-TTi
MYR2,124.99
Each
units
0 → 15V Precision DC Power Supply - 0 → 5A 1 Digital 75W 115 V ac, 230V ac 2 IEC 320 Binding Post Terminal - +5°C +40°C
RS Stock No. 805-2478
Mfr. Part No.EA-PSI 5040-20 A
MYR4,636.14
Each
units
0 → 40V Programmable DC Power Supply - 20A 1 Analogue, Digital 320W 90 → 264V ac 1 IEC 320 Binding Post Terminal - 0°C +50°C
RS Stock No. 758-1127
Mfr. Part No.2200-20-5
BrandKeithley
MYR5,605.74
Each
units
0 → 20V Programmable DC Power Supply - 5A 1 Digital 100W 110 V ac, 220V ac 1 IEC 320 Binding Post Terminal - 0°C +40°C