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Power Converters Developed by HVSS
High stability,-30kV HV Systems for Scanning Electron Microscope (SEM),BARC-Mumbai
A -30 kV/300 µA high stability(15 ppm), ultra low ripple(10 ppm) high voltage (HV) dc power supply and a filament power supply (8V/4A) with a variable bias resistor floating at -30kV is designed & developed for the scanning electron microscope (SEM). The HV power supply has been tested with developed HV connector and HV stability and output voltage ripple with noise(p-p) was in the range of 15 & 10 ppm respectively.
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Front and back view of developed HV and filament power supply with variable bias
for scanning electron microscope (BARC)
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b) The HV supply unit successfully installed and integrated with SEM unit at BARC.
Installation, integration and testing of -30 kV HV power supply system with scanning electron microscope at BARC, Mumbai
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