Spellman 205A-01R

The Spellman 205A-01R is a 30 W high voltage DC power supply from the Bertan 205B Series, delivering regulated output from 0 to 1 kV at 0 to 30 mA. Built on a low-noise linear topology, it achieves extremely low output ripple and noise while maintaining tight voltage and load regulation. The unit features reversible polarity for positive or negative output operation and includes full arc and short circuit protection. Designed as a component for system integration, it supports both local front panel control and remote analog programming via rear panel configuration. Front panel metering provides real-time voltage and current monitoring, while isolated 0 to 5 VDC monitor outputs enable external system feedback. Input selection accommodates either 115 VAC (±10%, 1 A) or 230 VAC (±10%, 0.5 A) at 50/60 Hz via a switch-selectable IEC320 connector with integrated EMI filtering. Voltage regulation holds ≤50 ppm (0.001%) across the input range, with load regulation at ≤0.005% across full load change. Temperature coefficient remains ≤50 ppm/°C, while short-term stability achieves ≤0.01% per hour following a 30-minute warm-up period. Current limiting is internally set to 105% of rated current at full voltage, derating linearly to 30% of maximum at zero output voltage. The unit meets CE standards and requires customer-supplied enclosure mounting, EMC filtering, and protection isolation devices.

– Technical Specifications

• Output power: 30 W
• Output voltage: 0 to 1 kV DC
• Output current: 0 to 30 mA
• Voltage regulation (line): ≤50 ppm/0.001%
• Voltage regulation (load): ≤0.005% at full load change
• Temperature coefficient: ≤50 ppm/°C
• Stability: ≤0.01% per hour (post warm-up); ≤0.02% per 8 hours
• Voltage monitor output: 0 to 5 VDC (10 kΩ output impedance)
• Input voltage: 115 VAC (±10%, 1 A) or 230 VAC (±10%, 0.5 A), 50/60 Hz, switch-selectable
• Input connector: IEC320 with detachable line cord
• Interface: 9-pin rear connector for remote programming and monitoring

– Key Features

• Reversible polarity (positive or negative output)
• Full arc and short circuit protection
• Low-noise linear topology with minimal ripple
• Precision front panel and remote voltage/current monitoring
• Remote analog control via external voltage or potentiometer input
• Switch-selectable dual input voltage (115/230 VAC)

– Typical Applications

• Research instrumentation requiring precise HV control
• Component within larger test systems and subsystems
• Applications demanding low noise and high stability

– Compatibility & Integration

The 205A-01R is configured as an OEM component requiring integration into a customer-supplied enclosure with appropriate EMC filtering and protective isolation.