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.

2639 products

  • new
    Keithley 2260B-30-72 Programmable DC Power Supply, 30V, 72A, 720W-ValueTronics
    AC & DC Power Supply Testers

    Keithley 2260B-30-72 Programmable DC Power Supply, 30V, 72A, 720W

    AC & DC Power Supply Testers
    Condition : New
    Save $236.60
    $3,143.40
    $3,143.40 $3,380
    Specs
    • Manufacturer : Keithley
    • Current : 72 A
    • Voltage : 30 V
    • Power : 720 W
    Show Specs

    Model No : Keithley

    Condition : New

    Manufacturer : Keithley

    Current : 72 A

    Voltage : 30 V

    Power : 720 W

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    Sale
  • new
    2290-5 Keithley DC Power Supply New-ValueTronics
    AC & DC Power Supply Testers

    2290-5 Keithley DC Power Supply New

    AC & DC Power Supply Testers
    Condition : New
    $7,620
    $7,620 $0
    Specs
    • Manufacturer : Keithley
    • Current : 5 mA
    • Voltage : 5 kV
    • Power : 100 W
    Show Specs

    Model No : 2290-5

    Condition : New

    Manufacturer : Keithley

    Current : 5 mA

    Voltage : 5 kV

    Power : 100 W

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  • used
    Agilent 6811B 375 VA AC Power Source/Analyzer (Pre-Owned)-ValueTronics
    AC & DC Power Supply Testers

    Agilent 6811B 375 VA AC Power Source/Analyzer (Pre-Owned)

    AC & DC Power Supply Testers
    Condition : Used
    Specs
    • Manufacturer : Agilent
    • Frequency : 1 kHz
    • Phase : 1
    • Power (va) : 375 VA
    • Volts : 300 V
    Show Specs

    Model No : Agilent

    Condition : Used

    Manufacturer : Agilent

    Frequency : 1 kHz

    Phase : 1

    Power (va) : 375 VA

    Volts : 300 V

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  • new
    61604 Chroma AC Source New-ValueTronics
    AC & DC Power Supply Testers

    61604 Chroma AC Source New

    AC & DC Power Supply Testers
    Condition : New
    $8,731.58
    $8,731.58 $0
    Specs
    • Manufacturer : Chroma
    • Frequency : 1 kHz
    • Phase : 3
    • Power (va) : 2 kVA
    • Volts : 300 V
    Show Specs

    Model No : 61604

    Condition : New

    Manufacturer : Chroma

    Frequency : 1 kHz

    Phase : 3

    Power (va) : 2 kVA

    Volts : 300 V

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  • new
    PSW 80-40.5 Instek DC Power Supply New-ValueTronics
    AC & DC Power Supply Testers

    PSW 80-40.5 Instek DC Power Supply New

    AC & DC Power Supply Testers
    Condition : New
    Save $467.28
    $2,128.72
    $2,128.72 $2,596
    Specs
    • Manufacturer : Instek
    • Current : 40.5 A
    • Voltage : 80 V
    • Power : 1.08 kW
    Show Specs

    Model No : PSW

    Condition : New

    Manufacturer : Instek

    Current : 40.5 A

    Voltage : 80 V

    Power : 1.08 kW

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    Sale
  • new
    SPD-3606 Instek DC Power Supply New-ValueTronics
    AC & DC Power Supply Testers

    SPD-3606 Instek DC Power Supply New

    AC & DC Power Supply Testers
    Condition : New
    $789
    $789 $0
    Specs
    • Manufacturer : Instek
    • Current : 12 A
    • Voltage : 30 V
    • Power : 375 W
    Show Specs

    Model No : SPD-3606

    Condition : New

    Manufacturer : Instek

    Current : 12 A

    Voltage : 30 V

    Power : 375 W

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  • new
    PSW 30-108 Instek DC Power Supply New-ValueTronics
    AC & DC Power Supply Testers

    PSW 30-108 Instek DC Power Supply New

    AC & DC Power Supply Testers
    Condition : New
    Save $103.84
    $2,492.16
    $2,492.16 $2,596
    Specs
    • Manufacturer : Instek
    • Current : 108 A
    • Voltage : 30 V
    • Power : 1.08 kW
    Show Specs

    Model No : PSW

    Condition : New

    Manufacturer : Instek

    Current : 108 A

    Voltage : 30 V

    Power : 1.08 kW

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    Sale
  • used
    Agilent 6653A 35V/15A 500W Single-Output GPIB DC Power Supply (Pre-Owned)-ValueTronics
    AC & DC Power Supply Testers

    Agilent 6653A 35V/15A 500W Single-Output GPIB DC Power Supply (Pre-Owned)

    AC & DC Power Supply Testers
    Condition : Used
    Specs
    • Manufacturer : Agilent
    • Current : 15 A
    • Voltage : 35 V
    • Power : 500 W
    Show Specs

    Model No : Agilent

    Condition : Used

    Manufacturer : Agilent

    Current : 15 A

    Voltage : 35 V

    Power : 500 W

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    Sold out
  • new
    PSW 30-72 Instek DC Power Supply New-ValueTronics
    AC & DC Power Supply Testers

    PSW 30-72 Instek DC Power Supply New

    AC & DC Power Supply Testers
    Condition : New
    $1,992
    $1,992 $0
    Specs
    • Manufacturer : Instek
    • Current : 72 A
    • Voltage : 30 V
    • Power : 720 W
    Show Specs

    Model No : PSW

    Condition : New

    Manufacturer : Instek

    Current : 72 A

    Voltage : 30 V

    Power : 720 W

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  • new
    PSU 12.5-120 Instek DC Power Supply New-ValueTronics
    AC & DC Power Supply Testers

    PSU 12.5-120 Instek DC Power Supply New

    AC & DC Power Supply Testers
    Condition : New
    $2,541
    $2,541 $0
    Specs
    • Manufacturer : Instek
    • Current : 120 A
    • Voltage : 12.5 V
    • Power : 1.5 kW
    Show Specs

    Model No : PSU

    Condition : New

    Manufacturer : Instek

    Current : 120 A

    Voltage : 12.5 V

    Power : 1.5 kW

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  • new
    PSW 80-27 Instek DC Power Supply New-ValueTronics
    AC & DC Power Supply Testers

    PSW 80-27 Instek DC Power Supply New

    AC & DC Power Supply Testers
    Condition : New
    $1,992
    $1,992 $0
    Specs
    • Manufacturer : Instek
    • Current : 27 A
    • Voltage : 80 V
    • Power : 720 W
    Show Specs

    Model No : PSW

    Condition : New

    Manufacturer : Instek

    Current : 27 A

    Voltage : 80 V

    Power : 720 W

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  • new
    B&K Precision XLN60026 600V/2.6A 1560W Programmable DC Power Supply-ValueTronics
    AC & DC Power Supply Testers

    B&K Precision XLN60026 600V/2.6A 1560W Programmable DC Power Supply

    AC & DC Power Supply Testers
    Condition : New
    $3,039
    $3,039 $0
    Specs
    • Manufacturer : B&K Precision
    • Current : 2.6 A
    • Voltage : 600 V
    • Power : 1.56 kW
    Show Specs

    Model No : B&K

    Condition : New

    Manufacturer : B&K Precision

    Current : 2.6 A

    Voltage : 600 V

    Power : 1.56 kW

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  • B&K Precision PVS60085MR 600V/8.5A 3000W Multi-Range High Power Programmable DC Power Supply-ValueTronics
    AC & DC Power Supply Testers

    B&K Precision PVS60085MR 600V/8.5A 3000W Multi-Range High Power Programmable DC Power Supply

    AC & DC Power Supply Testers
    Condition : Factory New
    $4,759
    $4,759 $0
    Specs
    • Condition : Factory New
    • Manufacturer : B&K Precision
    • Dcsup_amps : 8.5 A
    • Dcsup_volts : 600 V
    • Dcsup_watts : 3000 W
    Show Specs

    Model No : B&K

    Condition : Factory New

    Manufacturer : B&K Precision

    Dcsup_amps : 8.5 A

    Dcsup_volts : 600 V

    Dcsup_watts : 3000 W

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  • new
    1745A B&K Precision DC Power Supply New-ValueTronics
    AC & DC Power Supply Testers

    1745A B&K Precision DC Power Supply New

    AC & DC Power Supply Testers
    Condition : New
    $996
    $996 $0
    Specs
    • Manufacturer : B&K Precision
    • Current : 10 A
    • Voltage : 35 V
    • Power : 350 W
    Show Specs

    Model No : 1745A

    Condition : New

    Manufacturer : B&K Precision

    Current : 10 A

    Voltage : 35 V

    Power : 350 W

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  • new
    B&K Precision 9115-AT 80V/60A 1200W Multi-Range Programmable DC Power Supply with Automotive Test Functions and GPIB-ValueTronics
    AC & DC Power Supply Testers

    B&K Precision 9115-AT 80V/60A 1200W Multi-Range Programmable DC Power Supply with Automotive Test Functions and GPIB

    AC & DC Power Supply Testers
    Condition : New
    $3,550
    $3,550 $0
    Specs
    • Manufacturer : B&K Precision
    • Current : 60 A
    • Voltage : 80 V
    • Power : 1.2 kW
    Show Specs

    Model No : B&K

    Condition : New

    Manufacturer : B&K Precision

    Current : 60 A

    Voltage : 80 V

    Power : 1.2 kW

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  • new
    1735A B&K Precision DC Power Supply New-ValueTronics
    AC & DC Power Supply Testers

    1735A B&K Precision DC Power Supply New

    AC & DC Power Supply Testers
    Condition : New
    $562
    $562 $0
    Specs
    • Manufacturer : B&K Precision
    • Current : 3 A
    • Voltage : 30 V
    • Power : 90 W
    Show Specs

    Model No : 1735A

    Condition : New

    Manufacturer : B&K Precision

    Current : 3 A

    Voltage : 30 V

    Power : 90 W

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  • new
    Chroma 6312A 2-Slot Mainframe for 6310A Series DC Electronic Load-ValueTronics
    AC & DC Power Supply Testers

    Chroma 6312A 2-Slot Mainframe for 6310A Series DC Electronic Load

    AC & DC Power Supply Testers
    Condition : New
    $1,643.46
    $1,643.46 $0
    Specs
    • Type : Mainframe
    • Power : 600 W
    • Manufacturer : Chroma
    Show Specs

    Model No : Chroma

    Condition : New

    Type : Mainframe

    Power : 600 W

    Manufacturer : Chroma

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  • used
    8602 B&K Precision DC Electronic Load Used-ValueTronics
    AC & DC Power Supply Testers

    8602 B&K Precision DC Electronic Load Used

    AC & DC Power Supply Testers
    Condition : Used
    $995
    $995 $0
    Specs
    • Manufacturer : B
    Show Specs

    Model No : 8602

    Condition : Used

    Manufacturer : B

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  • new
    DP932E Rigol DC Power Supply New-ValueTronics
    AC & DC Power Supply Testers

    DP932E Rigol DC Power Supply New

    AC & DC Power Supply Testers
    Condition : New
    $499
    $499 $0
    Specs
    • Manufacturer : Rigol
    • Current : 3 A
    • Voltage : 30 V
    • Power : 210 W
    Show Specs

    Model No : DP932E

    Condition : New

    Manufacturer : Rigol

    Current : 3 A

    Voltage : 30 V

    Power : 210 W

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  • new
    SPD1305X Siglent DC Power Supply New-ValueTronics
    AC & DC Power Supply Testers

    SPD1305X Siglent DC Power Supply New

    AC & DC Power Supply Testers
    Condition : New
    $328
    $328 $0
    Specs
    • Manufacturer : Siglent
    Show Specs

    Model No : SPD1305X

    Condition : New

    Manufacturer : Siglent

    Request a Quote for EDU Discount
  • used
    GEN150-22 Lambda DC Power Supply Used-ValueTronics
    AC & DC Power Supply Testers

    GEN150-22 Lambda DC Power Supply Used

    AC & DC Power Supply Testers
    Condition : Used
    Specs
    • Manufacturer : Lambda
    • Current : 22 A
    • Voltage : 150 V
    • Power : 3.3 kW
    Show Specs

    Model No : GEN150-22

    Condition : Used

    Manufacturer : Lambda

    Current : 22 A

    Voltage : 150 V

    Power : 3.3 kW

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    Sold out
  • Extech DCP36 80W Switching Mode DC Power Supply-ValueTronics
    AC & DC Power Supply Testers

    Extech DCP36 80W Switching Mode DC Power Supply

    AC & DC Power Supply Testers
    Condition : Factory New
    $419
    $419 $0
    Specs
    • Condition : Factory New
    • Manufacturer : Extech
    • Dcsup_amps : 0 to 5A
    • Dcsup_volts : 0.5 to 36V
    • Dcsup_watts : 80W
    Show Specs

    Model No : Extech

    Condition : Factory New

    Manufacturer : Extech

    Dcsup_amps : 0 to 5A

    Dcsup_volts : 0.5 to 36V

    Dcsup_watts : 80W

    Add to Quote Request a Quote for EDU Discount
  • new
    382213 Extech DC Power Supply New-ValueTronics
    AC & DC Power Supply Testers

    382213 Extech DC Power Supply New

    AC & DC Power Supply Testers
    Condition : New
    $309
    $309 $0
    Specs
    • Manufacturer : Extech
    • Current : 3 A
    • Voltage : 30 V
    • Power : 90 W
    Show Specs

    Model No : 382213

    Condition : New

    Manufacturer : Extech

    Current : 3 A

    Voltage : 30 V

    Power : 90 W

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  • used
    382275 Extech DC Power Supply Used-ValueTronics
    AC & DC Power Supply Testers

    382275 Extech DC Power Supply Used

    AC & DC Power Supply Testers
    Condition : Used
    Specs
    • Manufacturer : Extech
    • Current : 20 A
    • Voltage : 30 V
    • Power : 600 W
    Show Specs

    Model No : 382275

    Condition : Used

    Manufacturer : Extech

    Current : 20 A

    Voltage : 30 V

    Power : 600 W

    Add to Quote Request a Quote for EDU Discount
    Sold out

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.