The RHK Model HVA 900 High Voltage Amplifier module is a low noise, high performance high voltage amplifier module designed specifically for SPM users who require higher than normal SPM operating voltages for their piezo scanners. This includes operating piezo-electric devices at cryogenic temperatures where piezo response is dramatically reduced, making it difficult to perform SPM experiments over a meaningful sample area. The HVA 900 is a rugged amplifier module built with special attention to low noise and high stability operation.
All outputs are current limited to prevent damage to the amplifiers.
Each amplifier channel provides both high voltage and low voltage inputs for operating versatility. High voltage inputs allow direct connection to the outputs of SPM 1000 control system. All inputs to the amplifiers are over-voltage protected and buffered to preserve signal purity by removing common mode noise and eliminating ground loops. A custom linear power supply contributes to the HVA 900's low noise and highly stable operation. All five channels are identical and can be used interchangeably for operation of any section on a piezo device.