Wiseman AMY±40 kV / 600 W High-Voltage Power Amplifier
| Brand | Wiseman |
|---|---|
| Model | AMY |
| Output Voltage | ±40 kV (DC or AC peak) |
| Output Current | ±15 mA (DC or AC peak) |
| Power Rating | 600 W |
| Input Voltage Range | ±10 V DC or AC peak |
| Voltage Gain | 4000 V/V (DC) |
| Gain Accuracy | < 0.1% of full scale |
| Output Noise | < 5 V RMS |
| Slew Rate | > 350 V/µs (10%–90%) |
| Small-Signal Bandwidth (−3 dB, 1% THD) | DC to > 20 Hz |
| Large-Signal Bandwidth | DC to > 1.4 kHz |
| Stability | < 50 ppm/hr (non-cumulative) |
| Temperature Coefficient | < 25 ppm/°C |
| Operating Temperature | 0–40 °C |
| Relative Humidity | ≤85% RH (non-condensing) |
| Altitude | ≤2000 m |
| Dimensions (H×W×D) | 1040 × 430 × 870 mm |
| Weight | 90 kg |
| Input Impedance | 25 kΩ |
| Output Impedance | 47 Ω |
| Display Resolution | 4000:1 (voltage), 1 V/5 mA (current) |
| Protection | Active short-circuit protection, four-quadrant active output, thermal and overcurrent monitoring |
Overview
The Wiseman AMY±40 kV / 600 W 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 four-quadrant active output architecture, the AMY amplifier delivers true bidirectional current sourcing and sinking across its full ±40 kV output range—enabling dynamic control of highly capacitive, inductive, or reactive loads without signal distortion or instability. Unlike passive HV transformers or switched-mode supplies, the AMY employs linear amplification topology with ultra-low output impedance (47 Ω) and sub-5 VRMS broadband noise, making it suitable for applications where signal fidelity, temporal resolution, and DC stability are critical—such as electro-optic modulation, ion beam steering, ferroelectric polarization cycling, and mass spectrometer detector biasing.
Key Features
- Four-quadrant active output stage enabling seamless current sourcing (positive voltage/positive current) and sinking (positive voltage/negative current, etc.) across full ±40 kV range—essential for driving piezoelectric actuators, electrostatic deflectors, and dielectric barrier discharge cells.
- High slew rate (>350 V/µs, 10–90%) and wide large-signal bandwidth (DC to >1.4 kHz) ensure faithful reproduction of fast transient waveforms, including pulsed DC, square waves, and modulated AC signals.
- Ultra-stable DC performance: drift <50 ppm/hr (non-cumulative), temperature coefficient <25 ppm/°C, and gain accuracy better than 0.1% of full scale—meeting requirements for long-duration polarization experiments and metrology-grade biasing.
- Integrated real-time voltage and current monitoring with calibrated front-panel displays (4000:1 scaling for voltage; 1 V/5 mA for current), each featuring independent analog outputs for external data acquisition systems.
- Comprehensive protection suite: active short-circuit limiting, thermal shutdown, overcurrent detection, and automatic recovery—designed to safeguard both amplifier and connected instrumentation (e.g., TOF-MS detectors, electron multipliers).
- Robust mechanical construction: industrial-grade chassis (90 kg), conformal-coated PCBs, and reinforced high-voltage insulation rated for continuous operation at 2000 m altitude and 85% RH non-condensing environments.
Sample Compatibility & Compliance
The AMY amplifier interfaces directly with a broad class of high-impedance and high-capacitance loads typical in physical sciences laboratories—including electrostatic lenses, MEMS-based micro-deflectors, electrophoretic separation chambers, atmospheric plasma electrodes, and ferroelectric hysteresis test fixtures. Its low output impedance and four-quadrant capability eliminate charge buildup and enable closed-loop control of capacitive loads up to several nF without oscillation. The unit complies with IEC 61010-1:2010 for safety in measurement, control, and laboratory equipment. While not certified for medical or explosion-proof use, its design supports integration into ISO/IEC 17025-accredited testing environments when deployed with documented calibration procedures traceable to NIST standards. It is routinely specified for use in USP compliant analytical instrument qualification (AIQ) protocols where programmable, stable HV bias is required for detector subsystems.
Software & Data Management
The AMY operates as a standalone analog amplifier but includes 0–10 V analog input and monitor outputs compatible with standard DAQ systems (e.g., National Instruments PXI, Keysight U2300A). Optional RS-232 or Ethernet interface modules (sold separately) support remote configuration of operating mode, limit thresholds, and status reporting via ASCII command protocol. All analog monitoring channels provide 16-bit equivalent resolution when digitized at ≥100 kS/s, enabling time-synchronized capture of voltage/current transients during pulsed experiments. Audit trails for parameter changes are maintained only if integrated into a validated SCADA or LIMS platform supporting 21 CFR Part 11 electronic signatures; the base unit itself does not store historical logs or enforce user access controls.
Applications
- Mass spectrometry: Precision DC/AC biasing of time-of-flight reflectrons, quadrupole rods, and electron multiplier detectors.
- Electro-optic modulation: Driving LiNbO₃ or KDP crystals requiring low-noise, high-bandwidth bipolar excitation.
- Materials science: Ferroelectric hysteresis loop characterization (P–E loops), electret charging, and dielectric breakdown studies.
- Plasma physics: Sustaining and modulating atmospheric-pressure plasma jets and dielectric barrier discharges (DBD).
- Particle beam control: Electrostatic focusing and raster scanning of ion/electron beams in accelerator test stands.
- Microfluidics & electrophoresis: High-voltage sequencing for capillary zone electrophoresis (CZE) and isotachophoresis (ITP) systems.
FAQ
What load capacitance can the AMY drive without instability?
The AMY maintains stability with capacitive loads up to 10 nF when operated within its specified bandwidth limits and with proper grounding/shielding practices. For loads exceeding 2 nF, consult the application note AN-AMY-CAP for recommended series damping and layout guidelines.
Is the AMY suitable for use in a Class 100 cleanroom?
Yes—the unit contains no moving parts, uses sealed high-voltage connectors, and generates negligible particulate or outgassing under normal operation. However, airflow restrictions around cooling vents must be observed per the installation manual.
Does the amplifier support arbitrary waveform generation?
No—the AMY is an analog voltage-controlled amplifier. Arbitrary waveforms must be generated externally (e.g., using an AWG with ±10 V output) and fed into the analog input.
Can multiple AMY units be synchronized for phased output?
Not natively. Phase alignment requires external trigger distribution and matched cable lengths; Wiseman offers custom timing interface options upon request for multi-unit deployments.
What calibration interval is recommended?
Annual calibration is recommended for applications requiring traceable measurement uncertainty <0.2% of reading. Calibration certificates include verification against primary HV standards per ISO/IEC 17025 requirements.
