# Good Will Instrument PSM-3004 30V/4A 120W Single-Output Dual-Range Programmable DC Power Supply (Pre-Owned) # Good Will Instrument PSM-3004 30V/4A 120W Single-Output Dual-Range Programmable DC Power Supply (Pre-Owned) ## Key Features At A Glance - Single-output, dual-range programmable linear DC supply offered in 120 W and 200 W models across the series - High setting resolution of 1 mV / 1 mA - 0.01% load and line regulation with ripple and noise below 350 µVrms - 100 memory sets for store/recall plus auto-step sequencing with timer settings for continuous testing - Protection suite — OVP, OCP, OTP, and output ON/OFF control; OCP delay prevents start-up nuisance trips - Standard RS-232C and GPIB (IEEE-488) interfaces with SCPI commands and LabVIEW drivers for ATE integration - Self-test and software calibration, vacuum-fluorescent display, and front and rear output terminals The PSM-Series is a line of single-output, dual-range programmable linear DC power supplies, available in 120 W and 200 W models including the PSM-2010, PSM-3004, and PSM-6003. Each unit combines a low and a high output range in one instrument, providing controlled DC power for bench work and automated test system integration. A programmable DC power supply provides a stable, adjustable source of direct-current voltage and current to power a device under test. The PSM-Series is positioned as an ideal choice for high-precision applications such as QA verification and product development. ValueTronics stocks and holds its own inventory in a 20,000-square-foot secure warehouse at 1675 Cambridge Drive in Elgin, Illinois. Every pre-owned unit is inspected and functionally verified in-house before it ships, while new units leave the warehouse factory-sealed exactly as received from the manufacturer. ## Compare Other Models in This Series The PSM-Series brings together single-output, dual-range programmable linear DC power supplies rated at 120 W or 200 W. Across the PSM-2010, PSM-3004, and PSM-6003, the shared design provides 1 mV / 1 mA resolution, 0.01% load and line regulation, and low ripple, differing primarily in the voltage and current envelope each model covers. Every model uses the same dual-range concept — a low range optimized for higher current and a high range optimized for higher voltage — so the series can address a range of bench and automated-test requirements without changing instrument family or control interface. Each model in the series below links to its own dedicated pre-owned product page with condition-matched pricing. Select the model whose output ranges fit the application, then choose the configuration that matches your requirements. The principal difference across the series is the output envelope. The PSM-2010 and PSM-6003 are rated at 200 W while the PSM-3004 is rated at 120 W, and each model pairs a distinct low range and high range — see the comparison table for the exact voltage and current values per model. Because resolution, regulation, ripple, protection, and interface features are common to the series, model selection is driven mainly by the voltage and current range required for the load rather than by differences in measurement performance or connectivity. Model Max Output Voltage Max Output Current Output Power **PSM-3004** 30 V 7 A 120 W PSM-2010 20 V 20 A 200 W PSM-6003 60 V 6 A 200 W Additional differences in specifications beyond the few shown above are not listed here — see each model's full specifications below. ## Accessories Supplied - User manual x 1 - Power cord x 1 - Test lead GTL-104 x 1 - European test lead GTL-204 x 1 - GTL-201A Ground lead (European terminal) x 1 - GTL-202 Sense lead (European terminal) x 1 ## Product Core & Specifications Specification Value DC Output Low Range 0 ~ 15 V / 7 A High Range 0 ~ 30 V / 4 A Output Power 120 W Constant Voltage Operation (% of output + offset) Load Regulation < 0.01% + 2 mV Line Regulation < 0.01% + 2 mV Ripple & Noise (Low Range) < 350 µVrms / 3 mVpp Ripple & Noise (High Range) < 350 µVrms / 2 mVpp Constant Current Operation (% of output + offset) Load Regulation < 0.01% + 250 µA Line Regulation < 0.01% + 250 µA Ripple & Noise < 2 mArms Transient Response Recovery Time < 50 µsec (for output to recover within 15 mV following a change in output current from full load to half load) Accuracy (% of output + offset) Programming Voltage 0.05% + 10 mV Programming Current 0.2% + 10 mA Readback Voltage 0.05% + 5 mV Readback Current 0.15% + 5 mA OVP/OCP Voltage 0.1% + 10 mV OVP/OCP Current 0.4% + 10 mA Temperature Coefficient per °C (% of output + offset) Voltage 0.01% + 3 mV Current 0.02% + 3 mA Stability (% of output + offset) Voltage 0.02% + 1 mV Current 0.1% + 1 mA Memory Store/Recall 100 sets Interface Standard RS-232C, GPIB Power Source AC Input AC 100V / 120V / 220V ±10%, 230V: -6% ~ +10%, 50/60 Hz Dimensions & Weight Dimensions (W × H × D) 230 (W) × 140 (H) × 380 (D) mm Weight Approx. 10 kg ## About this Pre-Owned unit This pre-owned unit is inspected and functionally verified in-house before it ships and is backed by our pre-owned warranty. To confirm its exact condition, firmware revision, installed options, or included accessories for your application before ordering, contact our Test Architects. - Warranty included - Functional verification included - Standard Calibration Upgrade Options: No Calibration Required, NIST Traceable, Z540.1 or ISO 17025 with Data, Z540.3 Guardbanding with Data. - Note that unnecessary accessories may not be included (contact Test Architect to confirm). ValueTronics supplies both new and used test and measurement equipment. New units ship factory-sealed, exactly as received from the manufacturer; every used unit is inspected and functionally verified in-house at our 20,000 sq ft secure facility in Elgin, Illinois before it ships. Our Test Architects can help you select the condition, calibration, and configuration that fit your application. **Please review the Manufacturer's Data Sheet to verify published specifications. Feedback on this webpage is always welcome — please reach out to your Test Architect at any time for questions or concerns. Thank you, we truly appreciate you being our customer.** ## Details - **Price:** 0.0 USD - **Vendor:** Good Will Instrument - **Type:** Dc Supply - **Tags:** DC Power Supply, Instek, Manufacturers, Power Supplies & Loads, product_manual_group_3, Product_used ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 0.00 USD | In stock | ## Images - Good Will Instrument PSM-3004 30V/4A 120W Single-Output Dual-Range Programmable DC Power Supply (Pre-Owned) --- > Source: [ValueTronics](https://valuetronics.com/products/psm-3004-instek-dc-power-supply-used) > Updated: 2026-06-20