Stanford Research PS375 – High Voltage Power Supply

The Stanford Research PS375 is a single-polarity high-voltage DC power supply delivering 10 W across an output range of +100 V to +20 kV. Built on the proven PS300 Series platform, it combines precision voltage and current control with arc and short-circuit protection, making it suitable for research laboratories and automated test environments requiring stable, programmable high-voltage outputs.

Technical Specifications

• Output range: +100 V to +20 kV


• Set accuracy: 0.06% of full scale


• Display accuracy: ±1 V typical, ±2 V maximum


• Resolution: 1 V (set and display)


• Regulation: 0.001% for ±10% line change; 0.04% for 100% load change


• Output ripple (rms): <0.01% of full scale (300 Hz to 300 kHz)


• Slew rate: 14,000 V/s typical Current Output


• Maximum current: 500 µA (0.5 mA)


• Set accuracy: 0.5% of full scale or 1 µA (whichever is greater)


• Resolution: 1 µA


• Display accuracy: ±1 µA typical, ±2 µA maximum


• Trip response time: <10 ms (excluding stored output charge) Stability & Protection


• Long-term stability: 0.01% per hour; <0.03% per 8 hours


• Temperature drift: 50 ppm/°C (0 to 50 °C typical)


• Arc and short-circuit protection: Yes


• Output stored charge: <40 µC maximum


• Discharge time: <6 seconds to <1% of full-scale voltage, no load (typical)


• Recovery time: 12 ms for 40% load step change (typical)

Key Features

• Programmable voltage limit, current limit, and current trip functions


• Dual LED front-panel displays for real-time voltage and current monitoring


• Status indicators for overload, trip, local/remote mode, and high-voltage enable state


• Three-position HV enable switch: OFF (locked), Momentary ON, and Enabled (computer interface)


• Compact design: 8 lbs

Interfaces & Control

• GPIB interface for computer control


• RS-232 interface (10 kV and 20 kV models)


• Analog programming via BNC SET input (0 to +10 VDC, 0 to full scale)


• Dual monitor outputs (BNC connectors) for voltage and current signals


• Front-panel push-button control with parameter increment/decrement and digit selection