AC & DC Power Supply Testers

Power supplies and electronic loads are vital tools for delivering and testing electrical power in a controlled, precise way. Commonly used in industries like aerospace, automotive, defense, semiconductors, and education, these tools power components, simulate real-world conditions, and verify system performance.

At ValueTronics, we carry a wide range of new and used AC and DC power supplies, electronic loads, and power supply testers from top brands like Keysight, Tektronix, Rigol, and B&K Precision. From basic benchtop models to programmable, high-performance systems, we offer solutions for a variety of test environments and budgets.

Browse our inventory to compare features and specs, or contact our team for help selecting the right equipment for your application.

2347 products

  • used
    APS-7050 Instek AC Source Used-ValueTronics
    AC & DC Power Supply Testers

    APS-7050 Instek AC Source Used

    AC & DC Power Supply Testers
    Condition : Used
    Specs
    • Manufacturer : Instek
    • Frequency : 550 Hz
    • Phase : 1
    • Power (va) : 500 VA
    • Volts : 310 V
    Show Specs

    Model No : APS-7050

    Condition : Used

    Manufacturer : Instek

    Frequency : 550 Hz

    Phase : 1

    Power (va) : 500 VA

    Volts : 310 V

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  • new
    DP2031 Rigol DC Power Supply New-ValueTronics
    AC & DC Power Supply Testers

    DP2031 Rigol DC Power Supply New

    AC & DC Power Supply Testers
    Condition : New
    $1,199
    $1,199 $0
    Specs
    • Manufacturer : Rigol
    • Current : 3 A
    • Voltage : 30 V
    • Power : 222 W
    Show Specs

    Model No : DP2031

    Condition : New

    Manufacturer : Rigol

    Current : 3 A

    Voltage : 30 V

    Power : 222 W

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  • new
    63003-150-40 Chroma DC Electronic Load New-ValueTronics
    AC & DC Power Supply Testers

    63003-150-40 Chroma DC Electronic Load New

    AC & DC Power Supply Testers
    Condition : New
    $1,495
    $1,495 $0
    Specs
    • Volts : 150 V
    • Amps : 40 A
    • Type : Single
    • Power : 250 W
    • Manufacturer : Chroma
    Show Specs

    Model No : 63003-150-40

    Condition : New

    Volts : 150 V

    Amps : 40 A

    Type : Single

    Power : 250 W

    Manufacturer : Chroma

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  • used
    9801 B&K Precision AC Source Used-ValueTronics
    AC & DC Power Supply Testers

    9801 B&K Precision AC Source Used

    AC & DC Power Supply Testers
    Condition : Used
    Specs
    • Manufacturer : B&K Precision
    • Frequency : 500 Hz
    • Phase : 1
    • Power (va) : 300 VA
    • Volts : 300 V
    Show Specs

    Model No : 9801

    Condition : Used

    Manufacturer : B&K Precision

    Frequency : 500 Hz

    Phase : 1

    Power (va) : 300 VA

    Volts : 300 V

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  • new
    9131C B&K Precision DC Power Supply New-ValueTronics
    AC & DC Power Supply Testers

    9131C B&K Precision DC Power Supply New

    AC & DC Power Supply Testers
    Condition : New
    $1,960
    $1,960 $0
    Specs
    • Manufacturer : B&K Precision
    • Current : 6 A
    • Voltage : 30 V
    • Power : 375 W
    Show Specs

    Model No : 9131C

    Condition : New

    Manufacturer : B&K Precision

    Current : 6 A

    Voltage : 30 V

    Power : 375 W

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  • new
    2230-30-3 Keithley DC Power Supply New-ValueTronics
    AC & DC Power Supply Testers

    2230-30-3 Keithley DC Power Supply New

    AC & DC Power Supply Testers
    Condition : New
    $2,120
    $2,120 $0
    Specs
    • Manufacturer : Keithley
    • Current : 3 A
    • Voltage : 30 V
    • Power : 195 W
    Show Specs

    Model No : 2230-30-3

    Condition : New

    Manufacturer : Keithley

    Current : 3 A

    Voltage : 30 V

    Power : 195 W

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  • used
    PSS-3203 Instek DC Power Supply Used-ValueTronics
    AC & DC Power Supply Testers

    PSS-3203 Instek DC Power Supply Used

    AC & DC Power Supply Testers
    Condition : Used
    Specs
    • Manufacturer : Instek
    • Current : 3 A
    • Voltage : 32 V
    • Power : 96 W
    Show Specs

    Model No : PSS-3203

    Condition : Used

    Manufacturer : Instek

    Current : 3 A

    Voltage : 32 V

    Power : 96 W

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  • new
    GPP-3323-LAN Instek DC Power Supply New-ValueTronics
    AC & DC Power Supply Testers

    GPP-3323-LAN Instek DC Power Supply New

    AC & DC Power Supply Testers
    Condition : New
    $625.50
    $625.50 $0
    Specs
    • Manufacturer : Instek
    • Current : 5 A
    • Voltage : 32 V
    • Power : 50 W
    Show Specs

    Model No : GPP-3323-LAN

    Condition : New

    Manufacturer : Instek

    Current : 5 A

    Voltage : 32 V

    Power : 50 W

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  • new
    8601B B&K Precision DC Electronic Load New-ValueTronics
    AC & DC Power Supply Testers

    8601B B&K Precision DC Electronic Load New

    AC & DC Power Supply Testers
    Condition : New
    $1,695
    $1,695 $0
    Specs
    • Volts : 120 V
    • Amps : 60 A
    • Type : Single
    • Power : 250 W
    • Manufacturer : B&K Precision
    Show Specs

    Model No : 8601B

    Condition : New

    Volts : 120 V

    Amps : 60 A

    Type : Single

    Power : 250 W

    Manufacturer : B&K Precision

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  • new
    9116B B&K Precision DC Power Supply New-ValueTronics
    AC & DC Power Supply Testers

    9116B B&K Precision DC Power Supply New

    AC & DC Power Supply Testers
    Condition : New
    $2,695
    $2,695 $0
    Specs
    • Manufacturer : B&K Precision
    • Current : 30 A
    • Voltage : 150 V
    • Power : 1.2 kW
    Show Specs

    Model No : 9116B

    Condition : New

    Manufacturer : B&K Precision

    Current : 30 A

    Voltage : 150 V

    Power : 1.2 kW

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  • used
    QHS20-1 Sorensen DC Power Supply Used-ValueTronics
    AC & DC Power Supply Testers

    QHS20-1 Sorensen DC Power Supply Used

    AC & DC Power Supply Testers
    Condition : Used
    Specs
    • Manufacturer : Sorensen
    • Current : 1 A
    • Voltage : 20 V
    • Power : 20 W
    Show Specs

    Model No : QHS20-1

    Condition : Used

    Manufacturer : Sorensen

    Current : 1 A

    Voltage : 20 V

    Power : 20 W

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  • used
    GPS-2303 Instek DC Power Supply Used-ValueTronics
    AC & DC Power Supply Testers

    GPS-2303 Instek DC Power Supply Used

    AC & DC Power Supply Testers
    Condition : Used
    Specs
    • Manufacturer : Instek
    • Current : 3 A
    • Voltage : 30 V
    • Power : 180 W
    Show Specs

    Model No : GPS-2303

    Condition : Used

    Manufacturer : Instek

    Current : 3 A

    Voltage : 30 V

    Power : 180 W

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  • used
    GPS-1850D Instek DC Power Supply Used-ValueTronics
    AC & DC Power Supply Testers

    GPS-1850D Instek DC Power Supply Used

    AC & DC Power Supply Testers
    Condition : Used
    Specs
    • Manufacturer : Instek
    • Current : 5 A
    • Voltage : 18 V
    • Power : 90 W
    Show Specs

    Model No : GPS-1850D

    Condition : Used

    Manufacturer : Instek

    Current : 5 A

    Voltage : 18 V

    Power : 90 W

    Add to Quote
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  • new
    DP711 Rigol DC Power Supply New-ValueTronics
    AC & DC Power Supply Testers

    DP711 Rigol DC Power Supply New

    AC & DC Power Supply Testers
    Condition : New
    $329
    $329 $0
    Specs
    • Manufacturer : Rigol
    • Current : 5 A
    • Voltage : 30 V
    • Power : 150 W
    Show Specs

    Model No : DP711

    Condition : New

    Manufacturer : Rigol

    Current : 5 A

    Voltage : 30 V

    Power : 150 W

  • new
    DL3021 Rigol DC Electronic Load New-ValueTronics
    AC & DC Power Supply Testers

    DL3021 Rigol DC Electronic Load New

    AC & DC Power Supply Testers
    Condition : New
    $499
    $499 $0
    Specs
    • Volts : 150 V
    • Amps : 40 A
    • Type : Single
    • Power : 200 W
    • Manufacturer : Rigol
    Show Specs

    Model No : DL3021

    Condition : New

    Volts : 150 V

    Amps : 40 A

    Type : Single

    Power : 200 W

    Manufacturer : Rigol

  • used
    PS-3030D Instek DC Power Supply Used-ValueTronics
    AC & DC Power Supply Testers

    PS-3030D Instek DC Power Supply Used

    AC & DC Power Supply Testers
    Condition : Used
    Specs
    • Manufacturer : Instek
    • Current : 3 A
    • Voltage : 30 V
    • Power : 90 W
    Show Specs

    Model No : PS-3030D

    Condition : Used

    Manufacturer : Instek

    Current : 3 A

    Voltage : 30 V

    Power : 90 W

    Add to Quote
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  • used
    PAB32-2 Kikusui DC Power Supply Used-ValueTronics
    AC & DC Power Supply Testers

    PAB32-2 Kikusui DC Power Supply Used

    AC & DC Power Supply Testers
    Condition : Used
    Specs
    • Manufacturer : Kikusui
    • Current : 2 A
    • Voltage : 32 V
    • Power : 64 W
    Show Specs

    Model No : PAB32-2

    Condition : Used

    Manufacturer : Kikusui

    Current : 2 A

    Voltage : 32 V

    Power : 64 W

    Add to Quote
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  • used
    card_product_noimg
    AC & DC Power Supply Testers

    PAB250-0.25 Kikusui DC Power Supply Used

    AC & DC Power Supply Testers
    Condition : Used
    Specs
    • Manufacturer : Kikusui
    • Current : 250 mA
    • Voltage : 250 V
    • Power : 62.5 W
    Show Specs

    Model No : PAB250-0.25

    Condition : Used

    Manufacturer : Kikusui

    Current : 250 mA

    Voltage : 250 V

    Power : 62.5 W

    Add to Quote
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  • new
    AFV-P-2500A Preen AC Source New-ValueTronics
    AC & DC Power Supply Testers

    AFV-P-2500A Preen AC Source New

    AC & DC Power Supply Testers
    Condition : New
    $5,290
    $5,290 $0
    Specs
    • Manufacturer : Preen
    • Frequency : 2 kHz
    • Phase : 1
    • Power (va) : 2.5 kVA
    • Volts : 310 V
    Show Specs

    Model No : AFV-P-2500A

    Condition : New

    Manufacturer : Preen

    Frequency : 2 kHz

    Phase : 1

    Power (va) : 2.5 kVA

    Volts : 310 V

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  • new
    PFR-100M Instek DC Power Supply New-ValueTronics
    AC & DC Power Supply Testers

    PFR-100M Instek DC Power Supply New

    AC & DC Power Supply Testers
    Condition : New
    $935
    $935 $0
    Specs
    • Manufacturer : Instek
    • Current : 2 A
    • Voltage : 250 V
    • Power : 100 W
    Show Specs

    Model No : PFR-100M

    Condition : New

    Manufacturer : Instek

    Current : 2 A

    Voltage : 250 V

    Power : 100 W

    Add to Quote
  • used
    PWS2185 Tektronix DC Power Supply Used-ValueTronics
    AC & DC Power Supply Testers

    PWS2185 Tektronix DC Power Supply Used

    AC & DC Power Supply Testers
    Condition : Used
    Specs
    • Manufacturer : Tektronix
    • Current : 5 A
    • Voltage : 18 V
    • Power : 90 W
    Show Specs

    Model No : PWS2185

    Condition : Used

    Manufacturer : Tektronix

    Current : 5 A

    Voltage : 18 V

    Power : 90 W

    Add to Quote
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  • new
    8620 B&K Precision DC Electronic Load New-ValueTronics
    AC & DC Power Supply Testers

    8620 B&K Precision DC Electronic Load New

    AC & DC Power Supply Testers
    Condition : New
    Save $1,158
    $8,492
    $8,492 $9,650
    Specs
    • Volts : 120 V
    • Amps : 480 A
    • Type : Single
    • Power : 3 kW
    • Manufacturer : B&K Precision
    Show Specs

    Model No : 8620

    Condition : New

    Volts : 120 V

    Amps : 480 A

    Type : Single

    Power : 3 kW

    Manufacturer : B&K Precision

    Add to Quote
    Sale
  • used
    HPD60-5 Xantrex DC Power Supply Used-ValueTronics
    AC & DC Power Supply Testers

    HPD60-5 Xantrex DC Power Supply Used

    AC & DC Power Supply Testers
    Condition : Used
    Specs
    • Manufacturer : Xantrex
    • Current : 5 A
    • Voltage : 60 V
    • Power : 300 W
    Show Specs

    Model No : HPD60-5

    Condition : Used

    Manufacturer : Xantrex

    Current : 5 A

    Voltage : 60 V

    Power : 300 W

    Add to Quote
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  • new
    9183B B&K Precision DC Power Supply New-ValueTronics
    AC & DC Power Supply Testers

    9183B B&K Precision DC Power Supply New

    AC & DC Power Supply Testers
    Condition : New
    $1,473
    $1,473 $0
    Specs
    • Manufacturer : B&K Precision
    • Current : 3 A
    • Voltage : 70 V
    • Power : 210 W
    Show Specs

    Model No : 9183B

    Condition : New

    Manufacturer : B&K Precision

    Current : 3 A

    Voltage : 70 V

    Power : 210 W

    Add to Quote

Frequently Asked Questions

What are power supplies and electronic loads used for?
Power supplies and electronic loads are used to deliver, regulate, and simulate electrical power during product development, testing, and validation. Power supplies provide a stable voltage or current to a device under test (DUT), while electronic loads draw controlled power to simulate real-world operating conditions.

These tools are commonly used in applications such as circuit design, power system development, battery testing, and quality control. Engineers rely on them to verify performance, ensure safety, and replicate operational stresses in industries like aerospace, automotive (including EV testing), semiconductors, and education.
What types of power supplies are available?
There are several types of power supplies designed for different applications:

DC Power Supplies: Deliver constant direct current. Commonly used in circuit testing, battery charging, and electronics development.

AC Power Supplies: Provide alternating current. Ideal for simulating real-world power sources in appliances, motors, and industrial systems.

Programmable Power Supplies: Allow users to control voltage and current digitally. Used in automated testing and advanced simulations.

Modular Power Supplies: Feature multiple output channels. Useful for multi-device test environments and scalable setups.

ValueTronics carries both linear and switching models, with benchtop and rack-mounted options available from leading manufacturers.
What is the difference between linear and switching power supplies?
The main difference between linear and switching power supplies lies in how they convert and regulate voltage.

Linear Power Supplies: Use a transformer and linear regulator to provide clean, low-noise output. They are simple to use and ideal for sensitive analog or RF applications but tend to be larger, heavier, and less efficient.

Switching Power Supplies: Use high-frequency switching to regulate voltage, making them more compact and energy efficient. These are suitable for high-power or portable applications but may introduce more electrical noise compared to linear models.

Each type has its advantages depending on your application's size, efficiency, noise tolerance, and performance needs.
What is the difference between AC and DC power supplies?
AC and DC power supplies differ in the type of electrical output they provide.

AC Power Supplies: Output alternating current, where the flow of electricity periodically reverses direction. These are used to test devices that operate on standard mains power or require variable frequency and voltage conditions, such as motors, appliances, and power converters.

DC Power Supplies: Provide direct current, where electricity flows in a constant direction. These are commonly used in electronic circuit testing, battery charging, and powering digital systems or components.
How can the right power supply or load be selected for an application?
Selecting the right power supply or electronic load depends on several key factors:

Voltage and Current Requirements: Know the maximum and minimum values your device under test (DUT) needs to operate safely.

Load Type: Determine whether your application requires constant current, constant voltage, or a dynamic load profile.

Control and Programming Needs: Programmable units are ideal for automated testing, remote control, and data collection.

Form Factor: Benchtop models are suitable for labs or small workspaces. Rack-mounted options are better for larger systems or production lines.

Accuracy and Stability: Look for models with low ripple, precise regulation, and high resolution when working with sensitive electronics.

If you're unsure what fits your needs, ValueTronics can provide expert guidance and help you compare models from leading manufacturers.
Do power supplies come with built-in protection features?
Yes, most modern power supplies come equipped with built-in protection features to safeguard both the power supply and the device under test.

Common protection features include:
Overvoltage Protection (OVP): Prevents voltage from exceeding a set limit to avoid damaging connected components.

Overcurrent Protection (OCP): Limits the current output to protect against short circuits or excessive load.

Overtemperature Protection (OTP): Shuts down the unit or reduces output if internal temperatures rise too high.

Short Circuit Protection: Detects and responds to short circuits to prevent equipment failure or damage.