Wiseman PMB30kV/20W High-Voltage Power Supply Module
| Brand | Wiseman |
|---|---|
| Model | PMB30kV/20W |
| Output Voltage | 30 kV (adjustable from 1–30 kV) |
| Output Power | 20 W |
| Ripple & Noise | <0.001% p-p (at full load) |
| Stability | ±0.005%/hr, ±0.01%/8 hr, ±0.05%/1000 hr (standard) |
| optional TC10 | ±0.001%/hr, ±0.002%/8 hr, ±0.01%/1000 hr |
| Temperature Coefficient | 25 ppm/°C (optional 10 ppm/°C) |
| Control Interface | RS-232, RS-485 (addressable, multi-drop bus capable) |
| Input | 24 VDC ±2%, ≤1 A |
| Protection | Reverse polarity, arc detection, short-circuit, continuous overcurrent |
| Compliance | CE certified |
| Dimensions (30 kV variant) | Ø200 × W75 × H35 mm |
| Weight (30 kV variant) | 950 g |
| Polarity | Selectable positive or negative output |
| Shielding | Full six-side conductive enclosure for EMI suppression |
| OEM Customization | Available |
Overview
The Wiseman PMB30kV/20W is a compact, high-stability DC-DC high-voltage power supply module engineered for precision instrumentation requiring ultra-low noise, tight regulation, and long-term drift control. Designed specifically for integration into analytical and scientific systems—including mass spectrometers, electron microscopes, photomultiplier tube (PMT) detectors, ionization chambers, and electrostatic beam optics—the PMB series leverages zero-current resonant topology and advanced high-voltage insulation techniques to achieve exceptional electrical performance in a minimized footprint. Its core architecture eliminates transformer saturation effects and minimizes switching transients, resulting in inherently low electromagnetic interference (EMI) and robust immunity to load and line variations. The module operates on a single 24 VDC input, delivering up to 30 kV at 20 W with programmable polarity, making it suitable for both biasing and acceleration applications in vacuum and atmospheric environments.
Key Features
- Output voltage range: 1–30 kV (factory-configurable in discrete steps: 1, 2, 2.5, 3, 5, 10, 15, 20, 30 kV)
- Maximum output power: 20 W (with derating above 20 kV per model variant)
- Ultra-low ripple and noise: <0.001% peak-to-peak at rated voltage and current—critical for signal-to-noise integrity in PMT and detector biasing
- High short-term and long-term stability: ±0.005% per hour (standard), improved to ±0.001% per hour with optional TC10 temperature-compensated reference
- Low temperature coefficient: 25 ppm/°C (standard); 10 ppm/°C available for high-precision OEM deployments
- Comprehensive protection suite: reverse-input polarity, overvoltage lockout, arc detection with automatic recovery, short-circuit current limiting, and sustained overload foldback
- Dual analog control options: 0–10 V external voltage command or 50 kΩ potentiometer interface (input impedance: 80 kΩ)
- Digital communication: RS-232 and RS-485 interfaces with configurable node addressing—enabling daisy-chained control of multiple modules on a single bus
- Full six-face conductive shielding: meets Class B conducted and radiated emission limits per EN 55032 and supports operation in electromagnetically sensitive lab environments
- OEM-ready mechanical design: compact cylindrical form factor (Ø200 × 75 × 35 mm for 30 kV variant), lightweight (950 g), and compatible with standard heatsink mounting
Sample Compatibility & Compliance
The PMB30kV/20W is routinely integrated into instruments subject to stringent regulatory and quality requirements. Its CE marking confirms conformity with the EU’s Electromagnetic Compatibility (EMC) Directive 2014/30/EU and Low Voltage Directive 2014/35/EU. While not intrinsically certified to IEC 61010-1, its design adheres to key safety principles—including reinforced insulation barriers, creepage/clearance distances exceeding 25 mm at 30 kV, and thermal shutdown thresholds aligned with UL 61010-1 Annex BB. For laboratories operating under GLP or GMP frameworks, the module supports audit-ready control via RS-485 with timestamped command logging when paired with compliant host software. It is widely deployed in FDA-regulated mass spectrometry platforms (e.g., quadrupole and TOF-MS) where stable detector bias directly impacts spectral resolution and quantitative reproducibility per USP and ASTM E260-21 guidelines.
Software & Data Management
Wiseman provides a Windows-based configuration utility supporting firmware updates, real-time voltage/current monitoring, and parameter calibration via RS-232 or RS-485. The protocol stack implements CRC-16 error checking and supports asynchronous command-response sequences with timeout enforcement—ensuring deterministic behavior in automated test systems. For integration into larger instrument control architectures (e.g., LabVIEW, Python PySerial, or MATLAB), Wiseman supplies documented ASCII command sets and DLL libraries. When used in multi-module configurations, the RS-485 addressable interface enables synchronized ramping, interlocked shutdown, and distributed fault reporting—functionality essential for compliance with IEC 62304 software lifecycle requirements in medical device OEM applications.
Applications
- Mass spectrometry: Ion source and detector biasing (e.g., electron multipliers, microchannel plates)
- Electron microscopy: Condenser and objective lens excitation, beam blanking, and Faraday cup biasing
- Radiation detection: PMT and proportional counter high-voltage supply in scintillation and gas-filled detectors
- Electrophoresis and capillary electrophoresis: Electrokinetic separation voltage sourcing
- Industrial electrostatics: ESD simulation, corona charging, and electrostatic printing biasing
- Scientific research: Particle accelerator pre-acceleration stages, plasma confinement electrodes, and laser-triggered breakdown experiments
- OEM instrumentation: Embedded HV subsystem for portable X-ray fluorescence (XRF) analyzers and handheld radiation survey meters
FAQ
Is the PMB30kV/20W suitable for use in vacuum chambers?
Yes—its hermetically sealed construction and absence of outgassing plastics make it compatible with moderate vacuum environments (<10⁻³ mbar); however, direct exposure to ultra-high vacuum requires optional ceramic feedthrough integration.
Can multiple PMB modules be synchronized for ramping or sequencing?
Yes—via RS-485 broadcast commands or individual addressing, enabling coordinated voltage sweeps across arrays for time-of-flight calibration or multi-stage detector biasing.
What is the recommended method for minimizing ground loops in multi-module installations?
Use star-ground topology with isolated DC inputs and RS-485 common-mode chokes; avoid daisy-chaining power grounds between modules.
Does Wiseman provide calibration certificates traceable to NIST standards?
Upon request, factory calibration reports with measurement uncertainty budgets (k=2) are available, referencing NIST-traceable HV dividers and electrometers.
How does the arc protection respond during transient discharge events?
The module detects current spikes >5 µs duration, interrupts output within 200 ns, and automatically recovers after a 100 ms hold-off period—preserving downstream components without manual reset.
