Wiseman XRW Series 65 kV / 100 W X-Ray Tube High-Voltage Power Supply

Overview

The Wiseman XRW Series is a compact, high-stability DC/DC high-voltage power supply engineered specifically for excitation of grounded-cathode X-ray tubes in energy-dispersive X-ray fluorescence (EDXRF) spectrometers and other analytical X-ray instrumentation. Operating on a 24 V DC input, the XRW delivers precisely regulated output voltages up to 70 kV and power levels up to 100 W—configurable in nine discrete voltage steps (6–70 kV) and six power ratings (10–100 W). Its core architecture employs zero-current resonant switching and advanced high-voltage insulation design to achieve low electromagnetic interference, minimal thermal drift, and long-term operational reliability. The unit integrates a fully adjustable filament supply (0–5.5 V / 0–3.5 A) with preheat functionality, enabling precise thermionic emission control critical for stable X-ray tube current. As a subsystem-level component, the XRW is not a standalone instrument but a certified OEM-grade power module intended for seamless integration into benchtop and floor-standing EDXRF platforms, thickness gauges, ROHS analyzers, and inline process monitoring systems.

Key Features

• High-precision regulation: Voltage stability ≤0.02% over 8 hours after warm-up; current stability matched to same specification
• Ultra-low output ripple: ≤0.1% peak-to-peak at full rated voltage and load
• Negligible thermal drift: Temperature coefficient ≤25 ppm/°C for both voltage and current outputs
• Integrated filament supply: Independently controllable 0–5.5 V / 0–3.5 A DC source with soft-start and preheat modes
• Dual control architecture: Local adjustment via multi-turn potentiometers or remote analog control (0–10 V input for voltage/current setpoints)
• Robust protection suite: Hardware-based overvoltage cutoff, short-circuit shutdown, arc detection with non-latching (NAT) or latching (AT-X, configurable 1–8 arc threshold) response
• Flexible digital interface options: Field-selectable USB 2.0, RS-232, or RS-422 for remote parameter readback, firmware updates, and real-time diagnostics
• Compact form factor: 140.0 × 85.0 × 240.0 mm (H × W × D), optimized for space-constrained instrument chassis
• Compliance-ready design: Fully RoHS-compliant; engineered to meet IEC 61010-1 safety requirements for measurement/control equipment

Sample Compatibility & Compliance

The XRW series is validated for use with grounded-cathode X-ray tubes from leading manufacturers including Kevex, Oxford Instruments, RTW, Superior, Varian, Trufocus, and multiple domestic Chinese suppliers. It supports both continuous-wave and pulsed operation modes typical in EDXRF and X-ray transmission applications. While the XRW itself is not an analytical instrument, its electrical performance directly impacts spectral resolution and quantitative repeatability in downstream systems. When integrated into EDXRF platforms compliant with ASTM E1621 (Standard Guide for X-Ray Spectrometry), ISO 21043 (XRF for elemental analysis), or IEC 62321-5 (RoHS screening), the XRW contributes to system-level conformance by maintaining stable tube bias under varying ambient conditions (0–50 °C operating range) and load transients. Its low ripple and high line/load regulation (<0.01%) minimize Bremsstrahlung continuum fluctuations—critical for accurate background subtraction and peak deconvolution in multi-element quantification workflows.

Software & Data Management

The XRW does not include embedded GUI software but provides standardized analog and digital interfaces compatible with common OEM host controller architectures. Analog 0–10 V monitor outputs deliver real-time voltage and current feedback with ±1% full-scale accuracy, suitable for closed-loop control in automated calibration routines. Digital interfaces support ASCII command protocols for querying status registers (e.g., fault flags, temperature sensor readings, arc event counters), setting operational parameters (voltage limit, filament current, protection thresholds), and initiating controlled ramp sequences. Integration with LabVIEW, Python (pySerial), or C/C++-based host applications enables automated power sequencing, health monitoring, and audit-trail logging—facilitating GLP/GMP-aligned system validation where traceable power delivery records are required. Optional USB or RS-422 variants support daisy-chaining in multi-channel X-ray source arrays used in dual-source or multi-angle EDXRF configurations.

Applications

• Energy-dispersive X-ray fluorescence (EDXRF) spectrometers for elemental analysis in electronics, alloys, geology, and environmental samples
• ROHS-compliant screening systems for Pb, Cd, Hg, Cr(VI), and Br in printed circuit boards and consumer electronics
• Online thickness gauging of thin films, foils (Al, Cu), paper, and polymer coatings in roll-to-roll manufacturing
• X-ray transmission density measurement in battery electrode coating, pharmaceutical tablet inspection, and food packaging integrity testing
• Microfocus X-ray imaging systems requiring stable, low-noise tube bias for high-resolution radiography
• Portable and benchtop XRF analyzers where size, weight, and thermal management are critical constraints
• Custom X-ray sources for academic research in X-ray optics, plasma diagnostics, and radiation physics

FAQ

Is the XRW Series CE-certified or UL-listed?
The XRW is designed to meet the essential safety and EMC requirements of IEC 61010-1 and EN 55011. Final certification is the responsibility of the integrating OEM, as compliance depends on complete system construction, grounding, shielding, and enclosure design.

Can the XRW drive floating-cathode X-ray tubes?
No. The XRW is explicitly engineered for grounded-cathode tube configurations only. Driving floating-cathode tubes requires inverted polarity or bipolar topologies not supported by this series.

What is the recommended cooling method?
For continuous 100 W operation, forced-air cooling with ≥15 CFM airflow across the heatsink surface is required. Derating curves are provided in the technical datasheet for convection-cooled deployments.

Does the unit support analog modulation of tube current during acquisition?
Yes—via the external 0–10 V filament control input, enabling synchronized current ramping for dynamic background suppression or dose optimization in time-resolved measurements.

Are calibration certificates or factory test reports available?
Upon request, Wiseman provides individual unit test reports documenting output stability, ripple, and protection activation thresholds at nominal and extreme operating points—traceable to internal metrology standards.