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. 493-7984
Mfr. Part No.PS 3032-10B
HK$6,081.17
Each
units
0 → 30V Laboratory Power Supply - 10A 1 Digital 320W 115 V ac, 230V ac 2 IEC 320 Binding Post Terminal 0°C +40°C Digital
RS Stock No. 878-2084
Mfr. Part No.BK9110
HK$3,347.23
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 Digital
RS Stock No. 707-2857
Mfr. Part No.CPX400DP
BrandAim-TTi
HK$14,100.72
Each
units
0 → 60V Programmable DC Power Supply - 0 → 20A 2 Digital 840W 110 → 240V ac 4 IEC 320 Binding Post Terminal +5°C +40°C Digital
RS Stock No. 731-2852
Mfr. Part No.QPX1200SP
BrandAim-TTi
HK$15,503.53
Each
units
0 → 60V Dual Range Power Supply - 0 → 50A 1 Digital 1.2kW 110 → 240V ac 1 IEC 320 Binding Post Terminal +5°C +40°C Digital
RS Stock No. 507-7106
Mfr. Part No.EX2020
BrandAim-TTi
HK$5,709.40
Each
units
0 → 20V - - 0 → 20A 1 Digital 400W 115 V ac, 230 V ac 2 IEC 320 Binding Post Terminal +5°C +40°C -
RS Stock No. 257-6953
Mfr. Part No.KAT5
BrandKert
HK$673.40
Each
units
12 V, 13.8V Stabilised Power Supply - 4 A, 5A 1 Analogue - 230V ac - Schuko Plug Binding Post Terminal -10°C +40°C Analogue
RS Stock No. 731-2842
Mfr. Part No.CPX400D
BrandAim-TTi
HK$13,837.68
Each
units
0 → 60V Adjustable Power Supply - 0 → 20A 2 Digital 420W 110 → 240V ac 4 IEC 320 Binding Post Terminal +5°C +40°C Digital
RS Stock No. 705-5026
Mfr. Part No.PWS4602
BrandTektronix
HK$13,091.51
Each
units
0 → 60V Programmable DC Power Supply - 2.5A 1 Digital 150W 110 V ac, 220V ac 1 IEC 320 Binding Post Terminal 0°C +40°C Digital
RS Stock No. 388-2726
Mfr. Part No.EX752M
BrandAim-TTi
HK$6,476.86
Each
units
0 → 75V - - 2 A, 4 A 2 Digital 300W 115 V ac, 230 V ac 4 IEC 320 Binding Post Terminal +5°C +40°C -
RS Stock No. 878-2088
Mfr. Part No.BK9111
HK$4,426.99
Each
units
60V Multi Range DC Power Supply - 8A 1 Digital 180W 110 V ac, 220V ac 2 IEC 320 Binding Post Terminal 0°C +40°C Digital
RS Stock No. 705-5016
Mfr. Part No.PWS2721
BrandTektronix
HK$4,360.54
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. 671-8716
Mfr. Part No.N5745A
HK$22,265.15
Each
units
0 → 30V Programmable DC Power Supply - 25A 1 Digital 750W 85 → 265V ac 2 IEC 320 Screw Terminal 0°C +55°C Digital
RS Stock No. 716-7371
Mfr. Part No.EA-PS 2042-10B
HK$2,893.74
Each
units
0 → 42V Laboratory Power Supply - 10A 1 Digital 160W 90 → 264V ac 1 IEC 320 4 mm Safety Socket 0°C +50°C Digital
RS Stock No. 731-2855
Mfr. Part No.QPX600D
BrandAim-TTi
HK$17,628.21
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 Digital
RS Stock No. 456-7888
Mfr. Part No.EA-3048B
HK$5,060.36
Each
units
0 → 30V Adjustable Power Supply - 5A 2 Digital 150VA 230V ac 2 IEC 320 4 mm Safety Socket 0°C +40°C Digital
RS Stock No. 707-2875
Mfr. Part No.QPX600DP
BrandAim-TTi
HK$20,360.82
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 Digital
RS Stock No. 716-7377
Mfr. Part No.EA-PS 2042-06B
HK$2,299.88
Each
units
0 → 42V Laboratory Power Supply - 6A 1 Digital 100W 90 → 264V ac 1 IEC 320 4 mm Safety Socket 0°C +50°C Digital
RS Stock No. 155-399
Mfr. Part No.PL303
BrandAim-TTi
HK$3,523.32
Each
units
0 → 30V Precision DC Power Supply - 0 → 3A 1 Digital 90W 115 V ac, 230V ac 2 IEC 320 Binding Post Terminal +5°C +40°C Digital
RS Stock No. 121-7585
Mfr. Part No.BK9129B
HK$7,018.40
Each
units
30V Programmable DC Power Supply - 3A 3 Digital 195W 110 V ac, 220V ac 6 IEC 320 Binding Post Terminal 0°C +40°C Digital
RS Stock No. 667-2581
Mfr. Part No.U8001A
HK$3,544.05
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