Wiseman MEF Series 70 kV / 350 W High-Voltage DC Power Supply

Overview

The Wiseman MEF Series is a modular, high-stability DC high-voltage power supply engineered for precision laboratory and industrial applications requiring regulated output from 1 kV to 70 kV at up to 350 W continuous power. Based on zero-current resonant switching topology and advanced high-voltage insulation design, the MEF series delivers exceptional voltage stability, ultra-low ripple, and minimal electromagnetic interference—critical for sensitive instrumentation such as electrophoresis systems, X-ray tubes, electron/ion beam sources, and electrostatic process equipment. Its universal AC input (86–265 VAC) with active power factor correction (PFC) ensures reliable operation across global mains conditions while maintaining >98% efficiency. The unit operates within an ambient temperature range of 0–50 °C and is rated for storage between –40 °C and +85 °C, supporting deployment in both controlled laboratories and rugged OEM integration environments.

Key Features

• Wide-output voltage range: 1 kV to 70 kV DC, continuously adjustable from 0 V to maximum rated output
• High-power density: 350 W continuous output in a compact 80 × 254 × 280 mm chassis, optimized for system integration
• Active power factor correction (PFC) achieving 0.99 PF across full input voltage range (86–265 VAC)
• Auto-crossing voltage/current regulation: simultaneous independent control with seamless transition between CV and CC modes
• Dual-control architecture: local adjustment via precision multi-turn potentiometers; remote analog (0–10 V) or digital (RS-232/RS-485/Ethernet) command interface
• Comprehensive protection suite: programmable overvoltage lockout (OVP), overcurrent limit (OCP), arc detection, short-circuit recovery, and hardware interlock inputs
• High-accuracy monitoring: 4-digit LED display with ±1% full-scale accuracy; isolated 0–10 V analog outputs for remote voltage/current readback
• Robust mechanical design: recessed HV output connector with insulated feedthrough and metal-shielded DB15 I/O interface for signal integrity and EMI suppression

Sample Compatibility & Compliance

The MEF series is specifically qualified for use with electrophoresis instrumentation—including horizontal and vertical gel systems—as well as other high-voltage-dependent analytical tools such as ion mobility spectrometers, electrostatic precipitators, and surface charge characterization platforms. Its low-noise, high-stability output meets the stringent requirements of ISO/IEC 17025-accredited testing labs where reproducibility and traceability are mandatory. While not certified to UL/EN 61010-1 out-of-the-box, the module complies with essential safety principles including reinforced insulation, creepage/clearance distances per IEC 60664-1, and functional grounding provisions. When deployed in FDA-regulated environments (e.g., medical device R&D or biopharmaceutical QC), the optional Ethernet interface enables integration with 21 CFR Part 11-compliant data acquisition systems, supporting electronic signatures, audit trails, and user access controls.

Software & Data Management

Wiseman provides a cross-platform configuration utility (Windows/macOS/Linux) supporting ASCII-based SCPI-like command sets over RS-232, RS-485, or TCP/IP. Commands enable real-time parameter readback (V_out, I_out, status flags), setpoint programming, protection threshold configuration, and firmware updates. For automated workflows, the MEF integrates natively with LabVIEW™, Python (PySerial/PyVISA), MATLAB®, and common SCADA platforms via standard Modbus RTU/TCP mapping (available upon request). All digital interfaces support timestamped event logging—including fault triggers and mode transitions—enabling GLP/GMP-aligned record retention when paired with validated network-attached storage or LIMS middleware.

Applications

• Capillary and slab-gel electrophoresis systems requiring stable, low-ripple HV bias
• X-ray tube excitation in benchtop XRD, XRF, and micro-CT instrumentation
• Electrostatic processes: spray coating, fiber spinning (electrospinning), flocking, and air filtration
• Particle accelerator subsystems: ion source biasing, beam focusing electrodes, and RF cavity pre-bias
• Materials science: dielectric breakdown testing, corona discharge studies, and surface resistivity measurement
• OEM integration: embedded power modules for medical imaging devices, semiconductor metrology tools, and vacuum chamber instrumentation

FAQ

Is the MEF series suitable for CE/FCC-conformant system integration?
Yes—the module’s EMI profile and isolation architecture meet Class B conducted/radiated emission limits when installed with proper filtering and grounding per IEC 61000-6-3. Full system-level certification remains the integrator’s responsibility.
Can output polarity be reversed (positive/negative HV)?
Each MEF model is factory-configured for either positive or negative polarity output; polarity reversal requires hardware modification and is not field-serviceable.
What is the minimum load requirement for stable regulation?
The MEF operates down to no-load conditions without instability; however, optimal ripple performance is achieved above 10% of rated current.
Does Wiseman offer calibration certificates traceable to NIST?
Yes—NIST-traceable calibration reports (ISO/IEC 17025 accredited) are available as an optional service with documented uncertainty budgets.
How is firmware updated, and is version rollback supported?
Firmware is updated via serial or Ethernet using signed binary packages; version history and safe rollback are supported through the configuration utility.