Wiseman MRN70kV/100W High-Voltage DC Power Supply Module

Overview

The Wiseman MRN70kV/100W is a compact, high-reliability DC high-voltage power supply module engineered for precision instrumentation requiring stable, low-noise bias voltages in demanding laboratory and OEM environments. Based on zero-current resonant (ZCR) topology and advanced high-voltage insulation design, the MRN series delivers regulated DC output up to 70 kV with exceptional long-term stability and minimal electromagnetic interference. Its core architecture supports critical applications where voltage fidelity directly impacts measurement integrity—particularly in mass spectrometry systems, where consistent ion acceleration and detector biasing are essential for spectral resolution and signal-to-noise ratio. The module operates from a single 24 VDC input and integrates comprehensive safety features—including overvoltage lockout, short-circuit protection, arc detection with configurable response (arc-trip or arc-tolerant modes), and hardware interlock circuitry compliant with IEC 61010-1 safety requirements for laboratory equipment.

Key Features

• Regulated DC output: 0–70 kV (selectable polarity), 100 W maximum continuous power
• Ultra-low output ripple: ≤0.1% peak-to-peak at full rated voltage, enabling high-fidelity biasing in sensitive detection systems
• High stability: ≤0.02% drift over 8 hours after thermal stabilization; ≤0.01% per hour under constant ambient conditions
• Low temperature coefficient: ≤25 ppm/°C, minimizing thermal drift across operational temperature range (0–50 °C)
• Robust control interface options: Internal multi-turn potentiometers for local voltage/current setting; external 0–10 V analog control for remote regulation
• Standard digital communication: Optional USB 2.0, RS-232, or RS-422 interfaces support programmable control and real-time monitoring in automated test environments
• EMI-hardened mechanical design: Six-sided mu-metal and conductive coating shielding ensures immunity to radiated and conducted noise in multi-instrument labs
• Configurable arc management: NAT (non-interruptive arc tolerance) and AT(X) (arc-triggered shutdown with user-defined arc count threshold, 1–8 events) modes enhance system uptime during transient discharge events
• OEM-optimized form factor: Compact chassis (127 × 75 × 229 mm for 60–70 kV variants) facilitates integration into space-constrained analytical platforms
• CE-marked and designed to meet EN 61326-1 (EMC for laboratory equipment) and EN 61010-1 (safety requirements)

Sample Compatibility & Compliance

The MRN70kV/100W is specifically qualified for use as a dedicated high-voltage source in mass spectrometry systems—including quadrupole, time-of-flight (TOF), and Orbitrap platforms—where precise electrode biasing, ion optics control, and detector gain modulation demand sub-0.05% voltage reproducibility. It is also compatible with electron guns, ion sources, electrostatic lenses, and ESD simulators requiring stable kilovolt-level DC bias. All units comply with EU CE directives covering electromagnetic compatibility (EN 61326-1) and electrical safety (EN 61010-1). While not inherently 21 CFR Part 11–compliant, the optional RS-232/USB interfaces support integration into validated software environments when paired with audit-trail-capable host applications—a common configuration in GLP/GMP-aligned QC laboratories performing instrument qualification per ASTM E2656 or ISO/IEC 17025 requirements.

Software & Data Management

Digital interface firmware enables bidirectional communication for remote parameter setting, real-time readback of output voltage/current, status flag interrogation (e.g., overvoltage fault, arc event counter, interlock state), and firmware updates. Command sets follow ASCII-based protocols compatible with LabVIEW, Python (PySerial), MATLAB, and common SCPI-like frameworks. For regulated environments, the module supports deterministic command-response timing and CRC checksum validation to ensure data integrity. When integrated into larger instrument control architectures, its analog 0–10 V monitor outputs (±1% accuracy at full scale) provide traceable, hardware-synchronized feedback without introducing software latency—critical for closed-loop high-voltage stabilization in research-grade spectrometers or accelerator subsystems.

Applications

• Mass spectrometry: Ion source acceleration, quadrupole RF/DC bias, TOF reflectron voltage control, MCP detector biasing
• Electron and ion beam instrumentation: Electron guns, focused ion beam (FIB) column supplies, plasma source biasing
• Electrostatic applications: Electrostatic chucks (ESC), electrospinning deposition systems, electrostatic precipitators, electrophoretic mobility analyzers
• Nuclear and radiation detection: PMT and SiPM biasing for scintillation detectors, proportional counters, and neutron detection arrays
• Materials science: Dielectric breakdown testing, corona discharge studies, surface charge mapping
• Biotechnology: DNA sequencing platform HV bias, electrophoretic separation systems, protein extraction field generators
• Industrial QA: ESD simulator calibration, high-voltage insulation tester excitation, capacitor charging modules

FAQ

What is the maximum continuous output current at 70 kV?
At 70 kV, the MRN70kV/100W delivers up to 1.43 mA (100 W ÷ 70 kV), with current limit adjustable via front-panel potentiometer or external 0–10 V signal.
Does the unit support both positive and negative polarity output?
Yes—polarity is fixed per unit order; dual-polarity versions require separate configuration and are available upon request for OEM integration.
Is fan cooling mandatory for the 100 W model?
Yes—the 100 W variant requires forced-air cooling at 15 CFM minimum; thermal derating applies if airflow is restricted below specification.
Can the MRN series be used in Class 100 cleanroom environments?
The module itself contains no moving parts or outgassing materials beyond standard conformal coating; however, fan-integrated units require filtered airflow paths to maintain particulate compliance—custom sealed enclosures are offered for cleanroom deployment.
How is traceability maintained for calibration and maintenance records?
While the MRN module does not store internal calibration logs, its analog monitor outputs and digital interface enable external logging systems to record voltage/current setpoints, actual outputs, and fault timestamps—supporting IQ/OQ/PQ documentation per ISO/IEC 17025 Annex A.2.