Modular High-Voltage Conditioned Power Supply

• Sources and sinks current at set voltage
• Small size and low-cost
• Multiple versions available
• Modular design with common form factor and electrical interface
• On-board general purpose I2C memory for ID, offsets, etc.
• Regulated voltage 0 to max
• Current and voltage monitor outputs
• 0.5 W output typical
• Output current limit: 0.5 mA for 1 kV version, 0.1 mA for 5 kV version
• Voltage monitor output
• Electronic controlled disconnect

The Modular High-Voltage Conditioned Power Supply is a miniature system that offers a turnkey solution to high-voltage power supply needs. Originally developed by Sandia National Laboratories, this modular and scalable unit features a regulated voltage output, the ability to source or sink current at any set voltage, current monitoring, and electronic float. It can operate in constant voltage mode, or it will support constant current through external control software. Its modularity and small size allows the high-voltage power supply to be used in a variety of applications and simplifies the reconfiguration of the setup, thus saving time and money. This power supply is ideal for applications requiring regulated voltage, current monitoring, and the capability to allow floating circuits by isolating outputs – features that cannot be obtained elsewhere. Some applications might include:

• Electrokinetic and electrophoretic transport
• Microfluidics and micro separators
• Photomultiplier tube power supplies for fast gain response
• Drift tube power supplies
• Field emissions sources
• Electron optics
• Bipolar voltage output when used in combination with a second unit
• ³He detectors
• Ion chambers

The unit maintains a constant output voltage whether current is flowing in or out and can be disconnected via electronic command. The required input voltage is 5 V. The input current drawn is a function of output loading, and is typically 20-50 mA (depending on version) with no output load. The maximum available output power is 0.5 W at the maximum output voltage level. The feedback circuit provides the control signal for accurate output voltage regulation or it will support constant current through external control software. The power supply will survive repeated arcing of its output to ground.