HV-1 Adjustable DC High-Voltage Power Supply by TOP (Tianjin)
| Brand | TOP (Tianjin) |
|---|---|
| Model | HV-1 |
| Output Voltage Range | 0–1000 V DC, Continuously Adjustable |
| Max. Output Current | 1.5 mA DC |
| Voltage Display | 3½-digit LED |
| Voltage Stability | ≤0.03 %/h |
| Control Mode | Manual (optional auto-control interface available upon request) |
| Origin | Tianjin, China |
| Manufacturer Type | Direct Manufacturer |
| Domestic Classification | Domestic Equipment |
Overview
The HV-1 Adjustable DC High-Voltage Power Supply is an engineered precision instrument designed for laboratory and industrial applications requiring stable, low-noise, and precisely controllable high-voltage DC output. Built on a linear regulation architecture with multi-stage filtering and temperature-compensated reference circuitry, the HV-1 delivers exceptional long-term voltage stability—critical for sensitive electro-optical and piezoelectric systems. Its core function is to supply regulated DC high voltage in the 0–1000 V range with minimal ripple (<500 µVRMS) and negligible load-induced drift. Unlike switching-based HV sources, the HV-1’s linear topology ensures electromagnetic compatibility (EMC) suitability for low-signal environments such as photomultiplier tube (PMT) biasing in fluorescence spectroscopy, dark-current-limited photon counting, and static actuation of piezoelectric transducers in scanning probe microscopy (SPM) and optical alignment stages.
Key Features
- Linear-regulated high-voltage output ensuring ultra-low noise and high reproducibility across extended operation cycles
- Continuous voltage adjustment from 0 to +1000 V DC via precision front-panel potentiometer with vernier scale
- Current-limiting protection set at 1.5 mA nominal, with foldback current limiting to safeguard connected devices
- 3½-digit LED display for real-time voltage readout (resolution: 0.1 V, accuracy: ±0.2 % FS ±1 digit)
- Thermally stabilized voltage reference and feedback network enabling ≤0.03 %/hour short-term stability under constant ambient conditions
- Robust aluminum chassis with isolated HV output connector (SHV or BNC optional), grounded safety interlock, and over-temperature shutdown
- Manual control standard; optional analog (0–10 V) or digital (RS-232/USB) interface for integration into automated test benches or DAQ systems
Sample Compatibility & Compliance
The HV-1 is routinely deployed in applications demanding strict electrical isolation and minimal leakage current—including PMT anode/cathode biasing per IEEE Std 100-2000 definitions, piezoelectric ceramic driver circuits (e.g., PZT stacks rated up to 1 kV), electrophoretic separation modules, and ion trap electrode biasing. It complies with IEC 61010-1:2010 (Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use) for Class I protected equipment. Input power meets EN 61326-1:2013 (EMC for laboratory equipment). While not certified for medical or explosive atmospheres, its design supports GLP-compliant documentation when used with external calibration logs and traceable voltage standards (e.g., Fluke 8508A).
Software & Data Management
As a manually operated unit, the HV-1 does not include embedded firmware or onboard data logging. However, when equipped with the optional RS-232 or USB interface, it supports ASCII command protocol for remote voltage setting, status query (e.g., “VSET?”, “VOUT?”, “IOUT?”), and fault reporting. Integration with LabVIEW™, Python (pySerial), or MATLAB® enables automated voltage sweeps, stability monitoring over time, and synchronization with oscilloscopes or photon counters. Audit trails—required for ISO/IEC 17025 or FDA 21 CFR Part 11 compliance—can be maintained externally via timestamped CSV export of voltage/current readings alongside environmental metadata (ambient temperature, operator ID, calibration due date).
Applications
- Photomultiplier tube (PMT) biasing in Raman spectrometers, scintillation detectors, and time-resolved fluorescence setups
- DC biasing of piezoelectric actuators in nanopositioning systems (e.g., Thorlabs KPZ101, PI P-601 series)
- Electrostatic lens control in electron/ion beam instrumentation
- Calibration source for high-voltage probes and electrometer validation
- Material testing under controlled electric field stress (e.g., dielectric breakdown studies on thin-film capacitors)
- Low-current plasma initiation and glow discharge maintenance in vacuum chambers
FAQ
What is the recommended warm-up time to achieve specified voltage stability?
Minimum 30 minutes after power-on under ambient temperature (23 ±2 °C); full specification compliance requires 60-minute thermal equilibrium.
Can the HV-1 be used in bipolar configuration?
No—the HV-1 provides only positive-polarity DC output referenced to chassis ground. For bipolar operation, two units may be configured in series with floating ground, subject to insulation rating verification.
Is the output short-circuit protected?
Yes—current foldback protection limits output to ≤100 µA during sustained short-circuit conditions, preventing component damage and enabling safe recovery without power cycling.
Does the unit support NIST-traceable calibration?
Calibration certificates with measurement uncertainty (k=2) are available upon request; calibration intervals are recommended annually or per internal quality procedures.
What safety certifications does the HV-1 hold?
Complies with IEC 61010-1:2010 for measurement/control equipment; CE marking applied per EU Low Voltage Directive 2014/35/EU and EMC Directive 2014/30/EU.
