Relays eliminate high-voltage noise

Focus:

Relay circuit grounds the inputs of unused piezoelectric actuators in a scanning electronic microscope to prevent them from picking up the noise induced by the high-voltage amplifier that drives the active actuator.

What you’ll learn:

• How to prevent pickup of high-voltage noise in a scanning electron microscope
• How to use relays to prevent pickup of high-voltage noise

Notes:

An EDN Design Idea

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Author & Publication:

Jui-I Tsai, Woei-Wu Pai, Feng-Chang Hsu, Po-Jui Chen, Ching-Cheng Teng, and Tai-Shan Liao, National Applied Research Laboratories, Hsinchu, Taiwan; Edited By Charles H Small and Fran Granville, EDN, Sep 13 2007

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