Wiseman PRB Series ±20 kV Reversible Polarity High-Voltage DC Power Supply
| Brand | Wiseman |
|---|---|
| Model | PRB |
| Output Voltage | ±20 kV |
| Output Power | 10 W |
| Polarity Reversal Time | 8 ms (min) to 1 s (configurable) |
| Ripple | 0.01% Vₚ₋ₚ |
| Stability | <0.02% over 8 h after 30-min warm-up |
| Input | 24 V ±2% DC |
| Interface Options | RS-232, RS-485, USB 2.0 |
| Compliance | CE |
| Dimensions (±20 kV) | 52.0 × 168.0 × 165.0 mm |
| Weight (±20 kV) | 2.5 kg |
| Cooling | Natural convection |
| Operating Temperature | 0–40 °C |
| Storage Temperature | −40–85 °C |
| Relative Humidity | 10–85% RH (non-condensing) |
| Protection | Arc & short-circuit protection |
| Monitoring | Analog voltage/current monitor outputs |
| Control | Local or remote via digital interface |
Overview
The Wiseman PRB Series is a precision-engineered, reversible polarity high-voltage DC power supply designed for demanding OEM and laboratory instrumentation applications where rapid, reliable polarity inversion under active load is critical. Based on zero-current resonant topology and advanced high-voltage insulation architecture, the PRB delivers stable, ultra-low-ripple output across its full voltage range—engineered specifically for sensitive electrostatic and ion-optical systems. Its core functionality centers on controlled, sub-millisecond polarity reversal without interrupting high-voltage operation—a requirement essential in dynamic analytical platforms such as time-of-flight mass spectrometers, capillary electrophoresis instruments, and electron multiplier detectors. Unlike conventional HV supplies requiring full shutdown before polarity change, the PRB enables real-time switching between positive and negative bias states while maintaining regulated output, thereby supporting advanced duty-cycle modulation and multi-stage ion optics control.
Key Features
- Reversible polarity operation at full rated voltage (±5 kV to ±20 kV) and power (0.5 W to 10 W), with user-selectable reversal times from 8 ms to 1 s
- Ultra-low output ripple: ≤0.01% Vp-p, optimized for noise-sensitive detection systems including secondary electron multipliers and Faraday cup arrays
- Dual-mode control: local potentiometer adjustment + digital interface (RS-232, RS-485, or USB 2.0) with full command-set support for voltage setpoint, polarity toggle, and status readback
- Integrated analog monitoring outputs (0–5 V proportional to output voltage and current) for external data acquisition and closed-loop feedback integration
- Comprehensive protection suite: automatic arc recovery, current-limit foldback, and short-circuit latching with auto-reset capability
- Thermally robust mechanical design with natural convection cooling; no fans or moving parts, ensuring silent, maintenance-free operation in vibration-sensitive environments
- CE-certified construction compliant with EN 61000-6-3 (EMI) and EN 61000-6-2 (immunity); suitable for integration into Class I medical and GLP-compliant analytical instruments
- Customizable configurations: input voltage tolerance, output voltage steps, enclosure shielding, and connector pinouts per OEM requirements
Sample Compatibility & Compliance
The PRB series is routinely integrated into instrumentation requiring stable, switchable high-voltage biasing—including quadrupole and magnetic sector mass spectrometers (e.g., as ion source acceleration, detector bias, and lens array drivers), capillary electrophoresis separation modules, scanning electron microscope (SEM) beam blankers, and electrospinning deposition stages. Its low electromagnetic emissions and high common-mode rejection ratio ensure compatibility with low-level signal chains in ISO/IEC 17025-accredited laboratories. The unit meets essential safety and EMC requirements per IEC 61010-1 (measurement/control equipment) and supports traceable calibration protocols aligned with ISO/IEC 17025 Annex A.5. While not inherently FDA 21 CFR Part 11–compliant, its digital interfaces support audit-trail-capable host software for regulated QC/QA environments when deployed within validated instrument architectures.
Software & Data Management
Wiseman provides open-architecture ASCII command protocols for all digital interfaces, enabling seamless integration with LabVIEW, Python (PySerial), MATLAB, and custom C++/C# host applications. Each command includes checksum verification and response acknowledgment to ensure deterministic communication in multi-device systems. Firmware supports non-volatile storage of user-defined default parameters (voltage setpoint, polarity state, ramp rate) and logs operational events—including overvoltage trips, arc counts, and thermal warnings—for post-acquisition diagnostics. Optional Windows-based configuration utility allows GUI-driven parameter tuning, waveform preview (for ramp profiles), and firmware updates via USB. All digital control paths are electrically isolated to prevent ground-loop interference in mixed-signal instrument backplanes.
Applications
- Mass spectrometry: Ion source acceleration, reflectron biasing, detector gain control (electron multipliers, microchannel plates)
- Capillary electrophoresis and microfluidic chip electrophoresis: Electrokinetic injection, separation voltage switching, and electrode bias sequencing
- Electron microscopy: Beam blanking, stigmator correction, and detector biasing in SEM/TEM systems
- Electrostatic applications: E-chuck clamping, electrospinning nozzle voltage control, and ESD testing fixtures
- Life science instrumentation: DNA fragment analysis platforms, MALDI source pulsing, and ion mobility spectrometer gate drivers
- Industrial R&D: Plasma initiation studies, corona discharge characterization, and high-field dielectric testing
FAQ
Can the PRB operate continuously while reversing polarity?
Yes. The PRB is engineered for hot-switching polarity reversal under full load without interruption to output regulation or risk of internal arcing.
What is the minimum achievable reversal time, and is it adjustable?
The fastest factory-configurable reversal time is 8 ms. Custom firmware variants support sub-5-ms transitions upon request, subject to voltage and load constraints.
Does the PRB support analog voltage programming in addition to digital control?
Standard models include 0–5 V analog inputs for remote voltage setpoint and polarity control; optional 0–10 V scaling is available per OEM specification.
Is remote monitoring of output voltage and current supported?
Yes—dedicated analog monitor outputs (0–5 V proportional to actual Vout and Iout) are provided on the D-sub connector for real-time external logging.
How is thermal management handled in enclosed instrument chassis?
The PRB relies exclusively on natural convection. For installations with limited airflow, derating curves and thermal simulation guidance are provided in the OEM Integration Manual.
Are calibration certificates and traceable documentation available?
NIST-traceable calibration reports (including ripple, stability, and line/load regulation data) are available as an optional add-on for GxP-regulated deployments.
