Wisman DEC Series Portable High-Voltage Power Supply, 70 kV / 200 W

Overview

The Wisman DEC Series is a compact, portable high-voltage DC power supply engineered for precision-demanding applications in analytical instrumentation, materials science, and industrial electrostatic processes. Operating on the principle of high-frequency resonant conversion with linear regulation feedback, the DEC delivers stable, low-noise DC output up to 70 kV at 200 W — optimized for integration with mass spectrometers, electron optics systems, and electrostatic test fixtures. Its architecture prioritizes electromagnetic compatibility (EMC), thermal management, and mechanical robustness for continuous operation in controlled laboratory and light-industrial settings. Unlike general-purpose HV modules, the DEC series incorporates dual-loop analog-digital control architecture, enabling simultaneous high-resolution voltage and current regulation with sub-ppm thermal drift performance — critical for long-duration experiments requiring trace-level reproducibility.

Key Features

• Wide adjustable output range: 0.5–70 kV DC, 0–100 mA, with selectable power ratings from 1.5 W to 200 W
• Exceptional stability: <0.01% per hour after 30-minute thermal stabilization; temperature coefficient ≤25 ppm/°C
• Low-output ripple: ≤0.1% peak-to-peak plus 1 Vrms under full-load conditions
• Dual-control interface: Local multi-turn potentiometers, analog 0–10 V remote setpoint inputs, and digital communication via USB 2.0, RS-232, and RS-422
• Comprehensive protection suite: Programmable overvoltage cutoff, arc detection with auto-recovery, short-circuit current limiting, and hardware-enforced safety interlock circuitry
• Compact form factor: 410 × 170 × 170 mm footprint; weight optimized between 4.5–10 kg depending on voltage rating and cooling configuration
• Front-panel digital display with real-time voltage/current readout (±1% accuracy at rated output)
• Configurable HV output connectors and 1-meter shielded HV cable included; input/output I/O options support custom signal routing for system integration

Sample Compatibility & Compliance

The DEC series is routinely deployed as a dedicated power source for mass spectrometry ion sources (e.g., electrospray, atmospheric pressure chemical ionization), electrostatic precipitators, and dielectric withstand testers. Its design adheres to IEC 61010-1:2010 safety requirements for electrical equipment used in measurement, control, and laboratory use. While not certified for medical or explosive atmospheres, its isolation rating (>100 MΩ @ 500 VDC), creepage/clearance distances, and reinforced insulation meet GLP-aligned lab infrastructure expectations. The unit supports audit-ready operation when integrated with compliant data acquisition software — enabling timestamped parameter logging, user access controls, and change history tracking consistent with FDA 21 CFR Part 11 principles for electronic records.

Software & Data Management

Wisman provides a cross-platform PC application (Windows/macOS/Linux) supporting full remote monitoring and closed-loop control via USB or serial interfaces. The software enables real-time waveform capture, programmable ramp profiles (voltage sweep, step-and-hold, pulse modulation), and automated calibration routines. All communication protocols are ASCII-based and documented in the SDK, facilitating integration into LabVIEW, Python (PySerial), MATLAB, or custom SCADA environments. Data export supports CSV and HDF5 formats, preserving metadata including timestamps, environmental sensor readings (optional external thermistor input), and error event logs. Firmware updates are performed in-field without hardware disassembly, ensuring sustained compliance with evolving lab informatics standards.

Applications

• Mass spectrometry: Ion source biasing, detector gain control, and quadrupole lens array powering
• Electrostatic processing: Electrospinning, electrostatic spraying, flocking, and powder coating systems
• Materials testing: Capacitor charging/discharging cycles, insulation resistance evaluation, and corona discharge characterization
• Air purification: Driving electrostatic precipitators and bipolar ionizers in cleanroom and HVAC validation studies
• Physics research: Particle beam focusing, electron gun biasing, and plasma initiation in low-pressure chambers
• Electrophoresis and microfluidics: High-field gel electrophoresis and dielectrophoretic particle manipulation

FAQ

What is the maximum continuous duty cycle for the DEC at full 70 kV / 200 W output?
Rated for continuous operation at full specifications when ambient temperature remains ≤35°C and adequate airflow is maintained. Derating applies above 35°C per the thermal derating curve in the technical manual.
Can the DEC be integrated into a GMP-compliant instrument platform?
Yes — when paired with validated control software and configured with audit trail logging, user role permissions, and electronic signature capability, it satisfies core elements of GMP Annex 11 and ISO 13485 system integration requirements.
Is analog remote control compatible with standard PLC outputs?
Yes — the 0–10 V analog interface accepts standard industrial voltage signals and includes internal scaling calibration to match arbitrary output ranges without external signal conditioning.
Does the unit include CE or UL certification documentation?
The DEC series complies with IEC 61010-1 and EMC Directive 2014/30/EU; full test reports and DoC are provided upon request for end-system certification submissions.
How is safety interlock implemented physically?
A dedicated 24 VDC-rated dry-contact interlock loop is provided — interruption halts HV generation within <10 ms and discharges stored energy via active bleed resistors meeting IEC 61010 Class II discharge time requirements.