Updated
Quick answer: Choose a product family by the test requirement: general bench operation, automation, high voltage or precision measurement. Then select a model whose complete operating envelope and ordered options meet the job.
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Choose a product family first
| Requirement | Family to evaluate | What to confirm |
|---|---|---|
| General development or repair | Bench supply | Output range, current limit, readback and connector compatibility. |
| Repeatable automated tests | Programmable supply | Ordered interface, command manual, timing and logging. |
| Elevated-voltage engineering tests | High-voltage supply | Operating power, insulation, connections, protection and stored energy. |
| Small permitted measurement error | Precision supply | Accuracy, regulation, noise, warm-up and calibration conditions. |
Specify the operating points
List the voltage and current for each test rather than buying only by a headline maximum. For example, a 500V test drawing 2A requires 1000W at that point; an 800V test drawing 1A requires 800W. These are arithmetic requirements, not claims that every model can provide them.
Check options for the purchase decision
Communication ports, remote SENSE, input configuration and accessories can vary by model and order. Confirm the exact configuration and obtain its operating manual. Automatic CV/CC transition is distinct from OCP shutdown, and a source-only supply is not an electronic load.
Build a useful quotation request
- Application and load type, including any external source or returned energy.
- Required voltage/current test points and continuous operating duration.
- Accuracy, noise, dynamic response and protection requirements.
- Interface, remote-sense and input-power configuration.
- Destination, desired delivery timing and required support.
Compare current products
Use the current product page and quotation for price, availability and terms. A 2026 buying guide should help define the purchase; it should not preserve a historical price as a current offer.
Practical checks
| Check | What to verify |
|---|---|
| Application | State the load, operating points and test purpose. |
| Ratings | Specify voltage, current and continuous power together. |
| Options | Confirm communication, SENSE and input configuration. |
| Ordering | Use the current product listing and a configuration-specific quotation. |