Various studies an currently being conducted on microelectron source for it
s product applications. Having noted the high-speed properties of electrons
issued from an emitter in a vacuum we applied these to surge absorbers. Ab
sorption properties and service life in surge voltage applications are cruc
ial factors in rating surge absorbers, Tests confirmed that our surge absor
ber had absorption superior to conventional surge absorbers and that servic
e life remained stable after some 10,000 surge voltage repetitions. Observa
tion of the emitter after surge voltage application showed localized meltin
g, indicating that emission concentrated in one area, causing the observed
melting. (C) 1999 Elsevier Science B.V. All rights reserved.