Stanford Research PS350 – High Voltage Power Supply

The Stanford Research PS350 is a high-voltage DC power supply for laboratory and research environments requiring stable, precisely adjustable output from 0 to 30 kV DC. It delivers up to 10 mA continuous current with exceptional voltage stability - less than 0.01% drift over 8 hours and < 0.05% RMS ripple and noise. The unit features a ten-turn potentiometer for fine voltage control, dual 4.5-digit digital displays for voltage (10 V resolution) and current (0.1 mA resolution), and selectable positive or negative polarity via internal jumper.

Over-current protection and remote interlock input support safe operation in demanding test applications such as detector systems, electron gun excitation, and high-voltage apparatus verification.

Technical Specifications

• Voltage Range: 0 to 30 kV DC


• Current Range: 0 to 10 mA (max continuous)


• Voltage Ripple and Noise: < 0.05% RMS at full scale


• Voltage Stability: < 0.01% over 8 hours (after 30-minute warm-up)


• Load Regulation: < 0.01% (0–100% load variation)


• Line Regulation: < 0.005% (±10% line voltage variation)


• Polarity: Positive or Negative, user-selectable Control and Monitoring


• Voltage Adjustment: Ten-turn potentiometer


• Voltage Display: 4.5-digit digital readout, 10 V resolution


• Current Display: 4.5-digit digital readout, 0.1 mA resolution


• Front Panel: Power On/Off, Voltage Adjust, Current Limit Set


• Safety: Over-current protection; Interlock input for remote shutdown Electrical Characteristics


• Input: 100–120/200–240 VAC, 50/60 Hz, user-selectable


• Input Current: < 5 A at 120 VAC, full load


• Power Consumption: < 600 VA Physical and Environmental


• Weight: Approximately 15–20 kg


• Cooling: Forced air


• Operating Temperature: 0°C to 40°C


• Storage Temperature: −20°C to 70°C


• Humidity: < 85% RH non-condensing

Key Features

• Selectable output polarity for flexible test configurations


• High-precision voltage stability and load regulation


• Dual digital displays with fine resolution for real-time monitoring


• Interlock connector integration for external safety systems


• Dual-input voltage support accommodates global facility requirements

Typical Applications

• Detector bias and excitation systems


• Electron gun power supply


• High-voltage test apparatus and research equipment


• Laboratory bench and field-mounted installations

Compatibility & Integration High-voltage BNC output connector. Standard DB-9 interlock connector for external safety shutdown integration.