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    Bench Power Supplies & Sources

    This handy piece of equipment is used when a power source is required that can be set up on the workbench, with its own power cord and method of output connection. They're useful in electronics for applications such as testing circuits that need a power source at different voltages.

    Variable power supplies

    Bench power supplies are available in variable or fixed voltage. A variable power supply will offer the ability to adjust the output, be that voltage, resistance, current or power and is ideal where versatility is required in an application, such as circuit testing. Variable power supplies have a feature called Current Limiting so it will shut down or limit current to the maximum rating. They normally have controls to allow the change of current from zero to the specified maximum current which helps to protect components.

    Linear and switching power supplies

    Bench power supplies are available in two different designs:

    • Linear Power Supplies – electrical or ripple noise is lower and easier to contain. Linear power supplies are more suitable for powering sensitive circuitry and generate more heat, resulting in lower energy efficiency. Linear supplies are heavier because the 50 Hz or 60 Hz transformer and associated filters are physically larger.
    • Switching Power Supplies – normally a better option for portable applications and they are lighter and more compact units. Switch-mode power supplies start out the same way as Linear, rectifying and filtering AC line input voltage, however they "switch" the DC into high-frequency AC. Switching power supplies can also tolerate small losses of power without affecting output, unlike Linear power supplies and be more energy efficient.

    Choosing a Bench Power Supply

    Wondering how many channels you need? Will depend on how many supplies you want to use simultaneously, but at least two channels are normal practise for a bench power supply.

    • Energy efficiency – normally detailed in the specifications or supplier's datasheet.
    • Line Regulation – Expressed as a percentage, this shows change in the output voltage relative to changes in the input line voltage.
    • Load Regulation – is the measure to ensure that the output voltage is constant despite load variations. A good load regulation ensures that output voltage doesn't fluctuate when loads increase or are removed. This is important where test results cannot be repeated.
    Bench Power Supplies
    Bench Power Supplies
    Bench Power Supply & Source Accessories
    Bench Power Supply & Source Accessories
    Current & Voltage Calibrators
    Current & Voltage Calibrators
    Electronic Load Software
    Electronic Load Software
    Electronic Loads
    Electronic Loads
    Load Banks
    Load Banks
    Source Meters
    Source Meters

    839 Products showing for Bench Power Supplies & Sources

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    Aim-TTi Trigger link for Use with SMU4000
    • RS Stock No. 252-5840
    • Mfr. Part No. SMU Link
    Each
    MYR750.87
    Aim-TTi EL-R Series Digital Bench Power Supply, 0 → 30V, 0 → 3A, 1-Output, 90W
    • RS Stock No. 665-4892
    • Mfr. Part No. EL303R
    Each
    MYR1,948.18
    EA Elektro-Automatik Interface Card
    • RS Stock No. 162-5360
    • Mfr. Part No. EA-IF KE5 USB
    Each
    MYR636.48
    RS PRO Digital Bench Power Supply, 0 → 30V, 0 → 5A, 3-Output
    • RS Stock No. 180-8786
    Each
    MYR2,108.38
    Aim-TTi PL-P Series Digital Bench Power Supply, 0 → 15V, 0 → 5A, 1-Output, 75W
    • RS Stock No. 457-734
    • Mfr. Part No. PL155-P
    Each
    MYR4,121.23
    Aim-TTi PL-P Series Digital Bench Power Supply, 0 → 30V, 0 → 3A, 3-Output, 94W
    • RS Stock No. 790-4750
    • Mfr. Part No. PL303QMT-P
    Each
    MYR8,531.43
    Aim-TTi EL-R Series Digital Bench Power Supply, 0 → 30V, 0 → 2A, 1-Output, 60W
    • RS Stock No. 665-4886
    • Mfr. Part No. EL302R
    Each
    MYR1,646.39
    Aim-TTi FX Series Laboratory Power Supply, 0 → 42V, 0 → 6A, 2-Output, 210W
    • RS Stock No. 278-375
    • Mfr. Part No. FX100DP
    Each
    MYR3,917.97
    Aim-TTi EX-R Series Digital Bench Power Supply, 0 → 35V, 0 → 4A, 2-Output, 280W
    • RS Stock No. 665-4903
    • Mfr. Part No. EX354RD
    Each
    MYR3,837.13
    Aim-TTi QL Series II Series Digital Bench Power Supply, 0 → 35V, 3A, 3-Output, 228W
    • RS Stock No. 753-1441
    • Mfr. Part No. QL355TP-G
    Each
    MYR9,030.86
    Aim-TTi EX-R Series Digital Bench Power Supply, 0 → 20V, 0 → 20A, 1-Output, 400W
    • RS Stock No. 507-7106
    • Mfr. Part No. EX2020R 
    Each
    MYR4,078.07
    Aim-TTi LDH400 Series Electronic DC Load, 0 → 400 W, 10 → 500 V, 0 → 16 A
    • RS Stock No. 161-5840
    • Mfr. Part No. LDH400P
    Each
    MYR10,546.49
    Aim-TTi PLH-P Series Digital Bench Power Supply, 0 → 250V, 0 → 360mA, 1-Output, 94W
    • RS Stock No. 707-2872
    • Mfr. Part No. PLH250P
    Each
    MYR4,656.71
    Aim-TTi EX-R Series Digital Bench Power Supply, 0 → 42V, 0 → 10A, 1-Output, 420W
    • RS Stock No. 437-9007
    • Mfr. Part No. EX4210R
    Each
    MYR4,228.36
    Aim-TTi PL Series Digital Bench Power Supply, 0 → 30V, 0 → 3A, 2-Output, 180W
    • RS Stock No. 457-740
    • Mfr. Part No. PL303QMD
    Each
    MYR4,974.63
    EA Elektro-Automatik Interface Module
    • RS Stock No. 801-1288
    • Mfr. Part No. EA-IF-AB-ETH2P
    Each
    MYR2,996.24
    Aim-TTi QPX Series Digital Bench Power Supply, 0 → 60V, 0 → 50A, 1-Output, 1.2kW
    • RS Stock No. 731-2858
    • Mfr. Part No. QPX1200S
    Each
    MYR9,743.73
    Aim-TTi CPX Series Digital Bench Power Supply, 0 → 60V, 0 → 20A, 2-Output, 840W
    • RS Stock No. 731-2842
    • Mfr. Part No. CPX400D
    Each
    MYR8,419.76
    Aim-TTi EX-R Series Digital Bench Power Supply, 0 → 18V, 0 → 10A, 1-Output, 180W
    • RS Stock No. 424-5926
    • Mfr. Part No. EX1810R
    Each
    MYR2,879.45
    Aim-TTi QL Series II Series Digital Bench Power Supply, 0 → 56V, 0 → 2A, 3-Output, 242W
    • RS Stock No. 753-1466
    • Mfr. Part No. QL564TP-G
    Each
    MYR9,251.43
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