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 Minimum Temperature Maximum Temperature Digital/Analogue
RS Stock No. 705-5004
Mfr. Part No.PWS2323
BrandTektronix
$821.69
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 Digital
RS Stock No. 667-7340
Mfr. Part No.E3620A
$1,212.46
Each
units
0 → 25V Dual Range Power Supply - 1A 2 Digital 25W 115V ac 2 IEC 320 Binding Post Terminal 0°C +55°C Digital
RS Stock No. 667-2581
Mfr. Part No.U8001A
$848.51
Each
units
0 → 30V Adjustable Power Supply - 3A 1 Digital 90W 110 V ac, 230V ac 2 IEC 320 Binding Post Terminal 0°C +55°C Digital
RS Stock No. 705-5016
Mfr. Part No.PWS2721
BrandTektronix
$821.69
Each
units
0 → 72V Adjustable Power Supply - 1.5A 1 Digital - 110 V ac, 220V ac 2 IEC 320 Binding Post Terminal 0°C +40°C Digital
RS Stock No. 180-4806
BrandRS PRO
$1,664.43
Each
units
0 → 50V Fanless Power Supply - 10A 1 Digital 100W 85 → 265V ac 1 RS232, RS485, USB RS232, RS485, USB 0°C +40°C Digital
RS Stock No. 907-5757
Mfr. Part No.Z60-3.5-L-J
BrandTDK-Lambda
$1,799.96
Each
units
60V - - 3.5A 2 Digital 210W 85 → 265V ac 2 - RS232, RS485, USB 0°C +50°C -
RS Stock No. 175-1802
Mfr. Part No.E36103B
$1,645.02
Each
units
0 → 20V Programmable DC Power Supply - 2A 1 Digital 40W 100 V ac, 115 V ac, 230V ac 1 IEC 320-C14 USB 0°C +40°C Digital
RS Stock No. 180-4807
BrandRS PRO
$1,789.14
Each
units
0 → 50V Fanless Power Supply - 10A 1 Digital 100W 85 → 265V ac 1 IEC Type Plug USB 0°C +40°C Digital
RS Stock No. 175-7367
BrandRS PRO
$240.87
Each
units
0 → 30V Programmable DC Power Supply - 0 → 5A 1 Digital 150W 230V ac 4 IEC 320-C14 - 0°C +40°C Digital
RS Stock No. 895-2404
Mfr. Part No.2260B-250-9
BrandKeithley
$4,972.10
Each
units
0 → 250V Programmable DC Power Supply - 9A 1 Digital 720W 80 → 265V ac 1 IEC 320 Plug-In Terminal Block - - Digital
RS Stock No. 175-1803
Mfr. Part No.E36104B
$1,645.02
Each
units
35V Programmable DC Power Supply - 1A 1 Digital 35W 100 V ac, 115 V ac, 230V ac 1 IEC 320-C14 - 0°C +40°C Digital
RS Stock No. 895-2397
Mfr. Part No.2260B-800-1
BrandKeithley
$3,761.36
Each
units
0 → 800V Programmable DC Power Supply - 1.44A 1 Digital 360W 80 → 265V ac 1 IEC 320 Plug-In Terminal Block - - Digital
RS Stock No. 180-4808
BrandRS PRO
$1,748.15
Each
units
0 → 250V Fanless Power Supply - 2A 1 Digital 100W 85 → 265V ac 2 RS232, RS485, USB RS232, RS485, USB 0°C +40°C Digital
RS Stock No. 705-5022
Mfr. Part No.PWS4323
BrandTektronix
$1,808.04
Each
units
0 → 30V Programmable DC Power Supply - 3A 1 Digital 96W 110 V ac, 220V ac 1 IEC 320 Binding Post Terminal 0°C +40°C Digital
RS Stock No. 667-7381
Mfr. Part No.E3645A
$1,975.23
Each
units
0 → 60V Programmable DC Power Supply - 1.1 A, 2.2A 1 Digital 80W 110 V ac, 230V ac 2 IEC 320 Binding Post Terminal 0°C +55°C Digital
RS Stock No. 667-7397
Mfr. Part No.E3648A
$2,530.80
Each
units
0 → 20 V, 0 → 8V Programmable DC Power Supply - 2.5 A, 5A 2 Digital 40W 110 V ac, 230V ac 2 IEC 320 Binding Post Terminal 0°C +55°C Digital
New
RS Stock No. 206-6967
Mfr. Part No.BK9832B
$12,803.88
Each
units
0 → 424V - - 20A 1 Digital Programmable 2kW - - - - - - -
RS Stock No. 758-1127
Mfr. Part No.2200-20-5
BrandKeithley
$1,824.18
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 Digital
RS Stock No. 195-4333
Mfr. Part No.T3PS43203P
$2,310.79
Each
units
0 → 32V Programmable Power Supply - 0 → 3A 4 Programmable Linear Power Supply 0 → 50W 230V ac 1 - Ext I/O, LAN, RS-232, Type A USB 0°C +40°C Analogue, Digital
RS Stock No. 501-178
Mfr. Part No.E3633A
$2,721.72
Each
units
0 → 20 V, 0 → 8V Programmable DC Power Supply - 10 A, 20A 1 Digital 160W 110 V ac, 230V ac 2 IEC 320 Binding Post Terminal 0°C +55°C Digital