Wiseman AMX±30kV/600W High-Voltage Power Amplifier

Overview

The Wiseman AMX±30kV/600W High-Voltage Power Amplifier is a precision-engineered, fully solid-state instrument designed for demanding laboratory and industrial applications requiring stable, low-noise, high-slew-rate bipolar high-voltage excitation. Based on advanced high-voltage semiconductor architecture and optimized electromagnetic shielding, the AMX operates as a true four-quadrant amplifier—capable of sourcing and sinking current across its full ±30 kV output range. This enables precise control over highly reactive or capacitive loads common in mass spectrometry ion optics, electro-optic modulators, dielectric barrier discharge systems, and ferroelectric material characterization. Unlike transformer-coupled or vacuum-tube-based HV sources, the AMX employs monolithic insulated-gate transistor arrays and proprietary feedback compensation networks to achieve exceptional DC stability (<50 ppm/hr), ultra-low output noise (<1.5 V_RMS), and rapid transient response (>550 V/µs). Its design complies with IEC 61010-1 safety standards for measurement, control, and laboratory equipment, and integrates seamlessly into automated test environments requiring traceable, programmable biasing.

Key Features

• Four-quadrant active output stage enabling bidirectional current flow (±20 mA) into resistive, capacitive, or inductive loads without external clamping or protection circuitry
• Ultra-stable DC performance: gain accuracy better than 0.1% of full scale, drift <50 ppm/hr, and temperature coefficient <25 ppm/°C
• High-fidelity analog interface: 0–±10 V DC or AC peak input with 25 kΩ impedance; fixed 3000× voltage gain with calibrated offset compensation
• Dual independent analog monitoring outputs—voltage (3000:1 scaling) and current (1 V / 6 mA)—each with dedicated front-panel meters and BNC connectors for oscilloscope or DAQ integration
• Comprehensive built-in protection: short-circuit detection, overcurrent limiting, overtemperature shutdown, and arc-detection logic with auto-recovery
• Robust mechanical construction: 70 kg chassis with reinforced aluminum frame, EMI-shielded enclosure, and convection-assisted thermal management for continuous 600 W operation at ambient up to 40 °C

Sample Compatibility & Compliance

The AMX is routinely deployed in applications involving high-capacitance electrodes (e.g., quadrupole rods in mass spectrometers), piezoelectric transducers, electro-optic crystals (LiNbO₃, KTP), and atmospheric-pressure plasma actuators. Its ability to drive >1 nF capacitive loads at >2.5 kHz bandwidth—while maintaining <1% total harmonic distortion—makes it suitable for dynamic biasing in time-resolved material polarization studies. The unit conforms to CE marking requirements under Directive 2014/30/EU (EMC) and 2014/35/EU (LVD), and meets UL 61010-1 third-party certification criteria for laboratory power supplies. For regulated environments (e.g., GLP-compliant analytical labs), optional analog/digital I/O supports 21 CFR Part 11–compliant audit trails when integrated with validated SCADA or LabVIEW-based control platforms.

Software & Data Management

While the AMX operates as a standalone analog amplifier, it supports full remote integration via optional IEEE-488 (GPIB), RS-232, or Ethernet (TCP/IP) interfaces. Firmware-upgradable digital control modules enable programmable ramp rates, voltage sweeps, and sequence-triggered output profiles. All analog monitor outputs are compatible with standard data acquisition systems (e.g., National Instruments PXI, Keysight DAQ970A), permitting real-time logging of voltage, current, temperature, and fault status with timestamped metadata. Calibration certificates—including as-found/as-left data, linearity verification per ISO/IEC 17025, and traceability to NIST standards—are provided with each unit upon delivery.

Applications

• Mass spectrometer ion guide and detector biasing (quadrupole, time-of-flight, Orbitrap)
• Electro-optic modulation for laser cavity control and Q-switching
• Pulsed DC and AC biasing in ferroelectric hysteresis loop measurement (P–E loops)
• Electrophoretic and dielectrophoretic particle manipulation in microfluidic devices
• Atmospheric plasma generation for surface treatment and biomedical activation
• Ion beam focusing and steering in accelerator physics test benches
• Current-rheological fluid actuation and electrostatic lensing in adaptive optics

FAQ

What is the maximum capacitive load the AMX can drive while maintaining specified bandwidth?
The AMX maintains its >2.5 kHz large-signal bandwidth with loads up to 2.2 nF when operated within rated current limits. For higher capacitance (>5 nF), bandwidth decreases predictably per the amplifier’s closed-loop transfer function; application-specific stability analysis is recommended.
Does the AMX support synchronized multi-channel operation for phased-array electrode systems?
Yes—when equipped with the optional digital synchronization module (AMX-SYNC), multiple units can be phase-locked with <10 ns jitter using TTL or LVDS reference clocks.
Is the voltage/current display calibrated and traceable?
Yes—front-panel meters are factory-calibrated against NIST-traceable standards, with calibration data included in the certificate of conformance. Recalibration intervals are recommended every 12 months under continuous operation.
Can the AMX be used in vacuum chambers or gloveboxes?
The unit is not rated for direct vacuum or inert-atmosphere enclosure. However, feedthrough-compatible HV cables (SHV or MHV) and external mounting brackets allow remote placement outside the chamber while delivering clean, low-noise output through certified vacuum feedthroughs.
What safety interlocks are supported for integration into OEM systems?
Standard interlock inputs include E-stop (dry contact), interlock chain (24 V fail-safe), and temperature alarm relay. Optional fiber-optic isolation kits ensure galvanic separation for high-noise industrial environments.