Which 800V DC power supply should you choose? The load voltage and current at each test point define the required operating range. ETOMMENS offers 0–800V bench supplies with 1A, 3A and 6A current ranges. Choose the continuous-power and AC-input configuration for those operating points, then compare front-panel adjustment and communication options.
An 800V rating alone does not tell you which model fits your bench. A low-current circuit check and a powered converter test can use the same voltage but need very different current and input-power capacity. This guide compares ETOMMENS models for those decisions. The 800V DC power supply range includes product specifications, configuration choices and online ordering.
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Match the supply to your actual voltage and current
Write down the lowest and highest voltage you will use, the current drawn at each voltage, and the duration of the test. Include startup demand if it differs from steady operation. The required load power is voltage multiplied by current; the supply must support that combination continuously in the configuration you order.
| Example load point | Required load power | Current range to consider |
|---|---|---|
| 800V, 0.5A | 400W | 1A or higher |
| 800V, 2A | 1600W | 3A or higher |
| 600V, 5A | 3000W | 6A |
These are load calculations, not additional product power ratings. The model’s continuous operating range and AC-input option determine coverage at each point. A 0–800V adjustable supply also covers lower voltage settings, so one instrument may serve tests at 400V, 600V and 800V when its current and power capability covers the load.
Compare the ETOMMENS 800V bench models
| Model | Output ranges | Front-panel adjustment | Selection focus |
|---|---|---|---|
| eTM-8001C | 0–800V / 0–1A | Two knobs | Tests within the 1A current range |
| eTM-8003C | 0–800V / 0–3A | Two knobs | Loads requiring more than 1A, within the 3A range |
| eTM-8006 | 0–800V / 0–6A | Four-knob coarse/fine control | Manual bench work with larger changes followed by fine adjustment |
| eTM-8006C | 0–800V / 0–6A | Two knobs | 6A-range testing; select available communication options for computer control |
The C suffix matters when comparing controls and communication functions. Models with the same voltage and current ranges can have different adjustment layouts and interface capabilities. Suitability depends on the exact model and selected options.
Choose an 800V supply for your application
High-voltage DC-DC converter development
An adjustable DC input lets you evaluate a converter at different supply voltages. Choose by the converter’s input current, including startup demand, rather than by its output current. For input demand within 1A, consider eTM-8001C; for more than 1A and up to 3A, compare eTM-8003C. For a test such as 600V at 5A, consider the 6A models with a configuration that supports the required 3000W.
The 0–800V range is useful when a development program includes several DC input levels. Automatic CV/CC operation regulates voltage while the load stays below the set current limit; when the limit is reached, the supply can reduce voltage to regulate current. A current-limited startup may therefore differ from operation on a source that supplies the full startup demand.
High-voltage circuit and module checks
For circuit prototypes drawing modest current, the 1A or 3A models provide adjustable voltage without selecting a 6A range solely for its higher headline current. Choose using the circuit’s normal demand, transient requirements and acceptable current limit. If your setup requires small repeated manual changes, compare the four-knob coarse/fine adjustment of eTM-8006 with the two-knob C models.
Repeated bench tests and automated test sequences
For manual work, front-panel adjustment and output control affect how easily you repeat settings. For a computer-controlled test, interface selection and supported commands become part of the model choice. Choose a model and communication configuration that can perform the voltage and current changes your sequence needs.
Can I program an 800V DC power supply over USB or RS232?
The eTM-8006C product page offers RS232, RS485, USB and RS232 plus analogue-control options. Select the required interface in its product options. These are configuration choices, rather than a promise that every connection is included in the base instrument. The command documentation defines voltage setting, current setting, output switching and readback support for software integration.
The eTM-8006 page describes its communication function as On/Off/Read. Remote-setting capability is model-specific; an identical 0–800V, 0–6A range does not establish identical control support.
Choose AC input for the continuous power you need
The eTM-8006C product options limit the 110–130V AC-input choice to output power of 1200W or less. An 800V, 6A load requires 4800W, so that input option does not cover the load. Select the AC-input and output configuration for the full operating point, rather than choosing by the wall-voltage label alone.
What if my load sends energy back to the supply?
Converters, batteries and other energy-storing loads can return power under some test conditions. If your load returns power toward the supply, the test setup must handle that energy. Returned-power absorption is a separate capability from standard bench output. Returned-energy sinking, battery cycling, PV simulation and dielectric-withstand functions require dedicated capabilities beyond a general bench supply.
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