Power supply module and charged particle beam device

Vacuum tube for amplifier circuit, and amplifier circuit using same

Vacuum channel field effect transistor, producing method thereof, and semiconductor device

Shadowed grid structures for electrodes in vacuum electronics

SEMICONDUCTOR-FREE VACUUM FIELD EFFECT TRANSISTOR FABRICATION AND 3D VACUUM FIELD EFFECT TRANSISTOR ARRAYS

Vacuum integrated electronic device and manufacturing process thereof

Integrated gas discharge tube and preparation method therefor

UV pipe

Method of making and use of an automatic system to increase the operating life of vacuum tubes with a vacuum tube device