Stanford Research PS355 – High Voltage Power Supply

The Stanford Research Systems PS355 is a 10 W high-voltage DC power supply delivering negative output from −100 V to −10 kV with 1 V resolution. Engineered for precision instrumentation and sensitive experiments requiring stable, low-ripple high voltage, the PS355 combines programmable voltage and current control with fast arc and short-circuit protection. Output voltage regulation reaches 0.001% for ±10% line variations and 0.04% across full-load swings.

Ripple performance is <0.01% of full scale from 300 Hz to 300 kHz. The unit supports analog programming and monitoring via 0 to +10 VDC signals, RS-232 command interface, and optional GPIB connectivity for laboratory automation. At 8 lbs and consuming less than 80 VA, it integrates into standard bench and rack configurations while maintaining exceptional long-term stability of 0.01% per hour.

Technical Specifications

• Range: −100 V to −10 kV


• Resolution: 1 V


• Set Accuracy: 0.06% of full scale


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


• Line Regulation: 0.001% for ±10% input change


• Load Regulation: 0.04% for 100% load change


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


• Slew Rate: 7,000 V/s typical Output Current


• Maximum Current: 1 mA


• Current Limit Range: 0 to 105% of full scale


• Current Trip Range: 10 µA to 105% of full scale


• Trip Response Time: <10 ms


• Current Set Accuracy: 0.5% of full scale


• Current Resolution: ±1 µA Stability & Temperature


• Long-term Stability: 0.01% per hour, <0.03% per 8 hours


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


• Discharge Time: <6 s to <1% full scale, no load

Key Features

• Programmable voltage, current limit, and current trip


• Arc and short-circuit protection with <10 ms response


• Analog inputs for remote voltage programming (0 to +10 VDC)


• Dual analog outputs for voltage and current monitoring (0 to +10 VDC, 1 Ω output impedance)


• 16 Hz update rate for real-time feedback


• Stored charge: <20 µC maximum


• Recovery time: 12 ms for 40% load step

Interfaces & Control

• RS-232 standard interface


• GPIB optional connectivity


• SHV male connector (Kings type 1704-1 or equivalent) for high-voltage output

Power Requirements

• Input: 90 VAC to 264 VAC, 47 Hz to 63 Hz


• Power Consumption: <80 VA