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.

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 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 Model Number Output Current Number of Outputs Type Power Rating Supply Voltage Number of Displays Input Connector Output Connector Minimum Temperature Maximum Temperature
RS Stock No. 805-2484
Mfr. Part No.EA-PSI 5040-40 A
HK$8,812.34
Each
units
0 → 40V - 40A 1 Analogue, Digital 640W 90 → 264V ac 1 IEC 320 Binding Post Terminal 0°C +50°C
RS Stock No. 665-4896
Mfr. Part No.EL302RD
BrandAim-TTi
HK$3,664.22
Each
units
0 → 30V - 0 → 2A 2 Digital 120W 115 V ac, 230 V ac 4 IEC 320 Binding Post Terminal +5°C +40°C
RS Stock No. 756-8815
Mfr. Part No.EA-PS 2342-10B +3..6V/2A
HK$5,836.00
Each
units
0 → 42 V, 0 → 6 V - 4 A, 10 A 3 Digital 332W 90 → 264V ac 4 IEC 320 4 mm Safety Socket 0°C +50°C
RS Stock No. 671-8845
Mfr. Part No.N8761A
HK$64,138.19
Each
units
0 → 300V - 17A 1 Digital 5.1kW 342 → 460V ac 2 Wire Clamp Screw Terminal 0°C +55°C
RS Stock No. 731-2858
Mfr. Part No.QPX1200S
BrandAim-TTi
HK$12,950.08
Each
units
0 → 60V - 0 → 50A 1 Digital 1.2kW 110 → 240V ac 1 IEC 320 Binding Post Terminal +5°C +40°C
RS Stock No. 667-7397
Mfr. Part No.E3648A
HK$13,609.38
Each
units
0 → 20 V, 0 → 8 V - 2.5 A, 5 A 2 Digital 40W 110 V ac, 230 V ac 2 IEC 320 Binding Post Terminal 0°C +55°C
RS Stock No. 705-5004
Mfr. Part No.PWS2323
BrandTektronix
HK$4,028.19
Each
units
0 → 30V - 3A 1 Digital - 110 V ac, 220 V ac 2 IEC 320 Binding Post Terminal 0°C +40°C
RS Stock No. 665-4909
Mfr. Part No.EX355R
BrandAim-TTi
HK$3,308.92
Each
units
0 → 35V - 5A 1 Digital 175W 115 V ac, 230 V ac 2 IEC 320 Binding Post Terminal +5°C +40°C
RS Stock No. 437-9007
Mfr. Part No.EX4210R
BrandAim-TTi
HK$5,127.65
Each
units
0 → 42V - 0 → 10A 1 Digital 420W 115 V ac, 230 V ac 2 IEC 320 Binding Post Terminal +5°C +40°C
RS Stock No. 538-9061
Mfr. Part No.EA-PS 512-21 R
HK$1,336.76
Each
units
11 → 14V - 21A 1 Analogue 300W 90 → 264V ac - IEC 320 Screw Terminal 0°C +40°C
RS Stock No. 501-178
Mfr. Part No.E3633A
HK$13,248.86
Each
units
0 → 20 V, 0 → 8 V - 10 A, 20 A 1 Digital 160W 110 V ac, 230 V ac 2 IEC 320 Binding Post Terminal 0°C +55°C
RS Stock No. 756-8821
Mfr. Part No.EA-PS 2042-20B
HK$3,318.52
Each
units
0 → 42V - 20A 1 Digital 320W 100 → 240V ac 2 IEC 320 4 mm Safety Socket 0°C +50°C
RS Stock No. 665-4903
Mfr. Part No.EX354RD
BrandAim-TTi
HK$5,344.85
Each
units
0 → 35V - 0 → 4A 2 Digital 280W 110 → 240V ac 4 IEC 320 Binding Post Terminal +5°C +40°C
RS Stock No. 667-7384
Mfr. Part No.E3646A
HK$10,032.68
Each
units
0 → 20 V, 0 → 8 V - 1.5 A, 3 A 2 Digital 24W 110 V ac, 230 V ac 2 IEC 320 Binding Post Terminal 0°C +55°C
RS Stock No. 878-2117
Mfr. Part No.BK9184B
HK$11,342.50
Each
units
200V - 2A 1 Digital 200W 115 V ac, 230 V ac 1 IEC 320 Binding Post Terminal 0°C +40°C
RS Stock No. 117-6781
Mfr. Part No.PMX18-5A
HK$5,753.36
Each
units
0 → 18V - 5A 1 Digital 90W 100V ac 1 IEC 320 Binding Post Terminal 0°C +40°C
RS Stock No. 457-746
Mfr. Part No.PL303QMD-P
BrandAim-TTi
HK$8,131.46
Each
units
0 → 30V - 0 → 3A 2 Digital 180W 115 V ac, 230 V ac 4 IEC 320 Binding Post Terminal +5°C +40°C
RS Stock No. 817-2229
Mfr. Part No.BK1687B
HK$2,904.41
Each
units
36V - 10A 1 Digital 360W 100 V ac, 240 V ac 1 IEC 320 Binding Post Terminal 0°C +40°C
RS Stock No. 665-4912
Mfr. Part No.EX354RT
BrandAim-TTi
HK$4,889.45
Each
units
0 → 35V - 4 A, 5 A 3 Digital 305W 110 → 240V ac 4 IEC 320 Binding Post Terminal +5°C +40°C
RS Stock No. 806-7525
Mfr. Part No.EA-PS 9080-340 3U
HK$56,728.51
Each
units
0 → 80V - 340A 1 Digital 10kW 340 → 460V ac 1 Wire Clamp 4 mm Safety Socket 0°C +50°C