# Tektronix PWS2185 18 V, 5 A DC Power Supply (Pre-Owned) # Tektronix PWS2185 18 V, 5 A DC Power Supply (Pre-Owned) ## Key Features At A Glance - Low-noise linear regulation for clean, accurate DC output - Output ranges spanning 0–18 V / 5 A up to 0–72 V / 1.5 A across the four-model series - 0.05% basic voltage accuracy and 0.2% basic current accuracy - 10 mV / 10 mA setting resolution - Less than 3 mVp-p ripple and noise (≤1 mVRMS, 20 Hz to 7 MHz) - Bright vacuum fluorescent display with large digits - 20 user-defined setup memories with numeric-keypad direct parameter entry - Three-year standard warranty The Tektronix PWS2000 Series is a line of linear-regulated DC power supplies built around four models — the PWS2185, PWS2323, PWS2326, and PWS2721. Each delivers clean, accurate output power, combining low-noise linear regulation with a bright vacuum fluorescent display, a direct-entry numeric keypad, and 20 user-definable setup memories. The series is designed with the ease-of-use and familiar operation expected from Tektronix. With wide current and voltage ranges plus 10 mA and 10 mV resolution, the PWS2000 Series satisfies a wide variety of applications. The numeric keypad makes it easy to specify a precise current limit before a test begins, and a maximum output voltage can be set to prevent accidental voltage settings above the specified maximum — helping prevent damaged circuits and lost test time. A user-definable password can lock the front panel to prevent unwanted adjustments during critical tests. ValueTronics stocks and holds its own inventory in a 20,000 sq ft secure warehouse at 1675 Cambridge Drive in Elgin, Illinois. Every used unit is inspected and functionally verified in-house before it ships, while new units ship factory-sealed exactly as received from the manufacturer — so buyers get the right instrument in verified condition either way. ## Compare Other Models in This Series The PWS2000 Series comprises four linear DC power supply models that share a common operating platform — low-noise linear regulation, 10 mV / 10 mA setting resolution, a bright vacuum fluorescent display, a direct-entry numeric keypad, and 20 setup memories — while differing in their rated output voltage and current. This lets a buyer choose the rating that fits the application without changing the operating experience across the bench. Across the series, all four models share the same 0.05% basic voltage accuracy, 0.2% basic current accuracy, ripple and noise performance, and three-year warranty. The distinction between models is the DC output envelope each one delivers, summarized in the comparison table below. Each pre-owned model below is its own dedicated product page with condition-matched pricing. Select the model whose output rating fits your application, then choose the listing that matches your required condition. The four models differ primarily in their DC output rating: the PWS2185 provides 0 to 18 V at up to 5 A, the PWS2323 provides 0 to 32 V at up to 3 A, the PWS2326 provides 0 to 32 V at up to 6 A, and the PWS2721 provides 0 to 72 V at up to 1.5 A. The two 32 V models share the same voltage ceiling but differ in available current, while the PWS2721 reaches the highest voltage in the series. Secondary differences track these ratings. The PWS2326 draws up to 400 VA, while the PWS2185, PWS2323, and PWS2721 draw up to 250 VA. The PWS2185 weighs 5.6 kg, while the PWS2323, PWS2326, and PWS2721 each weigh 6.7 kg. Readback resolution and load-regulation figures also vary slightly by model. Model Output Voltage Output Current Load Regulation (V) **PWS2185** 0 to 18 V 0 to 5 A ≤0.02% + 5 mV PWS2323 0 to 32 V 0 to 3 A ≤0.02% + 5 mV PWS2326 0 to 32 V 0 to 6 A ≤0.04% + 6 mV PWS2721 0 to 72 V 0 to 1.5 A ≤0.02% + 4 mV Additional differences in specifications beyond the few shown above are not listed here — see each model's full specifications below. ## Accessories Supplied - Power supply - Line cord - User manual - Traceable Certificate of Calibration - Documentation CD (includes user manuals and technical reference) ## Product Core & Specifications Specification Value DC Output Rating Voltage 0 to 18 V Current 0 to 5 A Load Regulation Voltage ≤0.02% + 5 mV Current ≤0.1% + 2 mA typical Line Regulation Voltage ≤0.1% + 5 mV Current ≤0.1% + 2 mA typical Ripple and Noise (20 Hz to 7 MHz) Voltage ≤1 mVRMS / 3 mVp-p Current ≤5 mARMS Setting Resolution Voltage 10 mV Current 10 mA Setting Accuracy (25 °C ± 5 °C) Voltage ≤0.05% + 10 mV Current ≤0.2% + 10 mA Readback Resolution Voltage 10 mV Current 10 mA Readback Accuracy (25 °C ± 5 °C) Voltage ≤0.05% + 15 mV Current ≤0.1% + 15 mA Display Type Vacuum fluorescent display Memory Setup memories 20 setup memories Power Source 110 V AC Setting 99 VRMS to 132 VRMS 220 V AC Setting 198 VRMS to 264 VRMS Frequency 47 Hz to 63 Hz Power Consumption 250 VA Physical Characteristics Height 106 mm (4.2 in.) Width 256 mm (10.0 in.) Depth 383 mm (15.0 in.) Weight 5.6 kg (12.3 lb.) Environmental and Safety Operating Temperature 0 °C to 40 °C Storage Temperature –20 °C to 70 °C Warm up 20 minutes to full uncertainty specifications Relative Humidity (Operating and storage) 5% to 95% RH at up to 40 °C, noncondensing; 5% to 60% RH above 40 °C to 70 °C, noncondensing Altitude (Operating) 2,000 meters Altitude (Storage) 4,000 meters Safety EN61010-1 2001; UL61010-1-2004; CAN/CSA C22.2 No. 61010-1 2004 Warranty Warranty Three years > **Important:** Allow 20 minutes warm-up to reach full uncertainty specifications. > **Important:** When ordering, please specify the power plug option (A0 North America, A1 Universal Euro, A2 United Kingdom, A3 Australia, A5 Switzerland, A10 China, A11 India, A12 Brazil) and the preferred language option (L0 English, L1 French, L2 Italian, L3 German, L4 Spanish, L6 Portuguese, L7 Simplified Chinese, L8 Traditional Chinese, L9 Korean, L10 Russian). ## 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:** Tektronix - **Type:** Dc Supply - **Tags:** DC Power Supply, Manufacturers, Power Supplies & Loads, product_manual_group_1, Product_used, Tektronix ## Variants | Variant | Price | Available | |---------|-------|-----------| | Default Title | 0.00 USD | In stock | ## Images - Tektronix PWS2185 18 V, 5 A DC Power Supply (Pre-Owned) --- > Source: [ValueTronics](https://valuetronics.com/products/pws2185-tektronix-dc-power-supply-used) > Updated: 2026-06-27