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
New
RS Stock No. 201-2845
Mfr. Part No.EA-PSB 9060-120 3U
HK$67,576.99
Each
units
60V - 120A 1 Digital 2.5kW - - - - - -
New
RS Stock No. 201-2851
Mfr. Part No.EA-PSB 9750-20 3U
HK$73,732.32
Each
units
750V - 20A 1 Digital 2.5kW - - - - - -
RS Stock No. 895-2388
Mfr. Part No.2281S-20-6
BrandKeithley
HK$27,134.49
Each
units
0 → 20V - 6A 1 3 in 1 120W 240V ac 1 IEC 320 Binding Post Terminal 0°C +40°C
RS Stock No. 671-8766
Mfr. Part No.N5768A
HK$27,099.36
Each
units
0 → 80V - 19A 1 Digital 1.5kW 85 → 265V ac 2 Wire Clamp Screw Terminal 0°C +55°C
RS Stock No. 138-6101
Mfr. Part No.EA-PSI 9080-10 T
HK$13,702.84
Each
units
0 → 80V - 10A 1 Digital 320W 90 → 264V ac 1 IEC Type Plug USB 0°C +50°C
RS Stock No. 123-3563
BrandRS PRO
HK$1,833.00
Each
units
0 → 30V - 3A 1 Analogue 90W 100 → 240V ac 2 IEC 320 Plug-In Terminal Block 0°C +40°C
RS Stock No. 690-9672
Mfr. Part No.N6743B
HK$9,289.28
Each
units
0 → 20V - 5A 1 Digital 100W 100 → 240V ac 2 Wire Clamp Screw Terminal 0°C +55°C
RS Stock No. 671-8763
Mfr. Part No.N5767A
HK$26,568.00
Each
units
0 → 60V - 25A 1 Digital 1.5kW 85 → 265V ac 2 Wire Clamp Screw Terminal 0°C +55°C
RS Stock No. 121-7587
Mfr. Part No.BK9131B
HK$12,922.10
Each
units
30V - 6A 3 Digital 375W 110 V ac, 220 V ac 6 IEC 320 Binding Post Terminal 0°C +40°C
RS Stock No. 690-9669
Mfr. Part No.N6741B
HK$10,220.00
Each
units
5V - 20A 1 Digital 100W 100 → 240V ac 2 - - 0°C +55°C
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