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Electron tubes (Qtbef)

Electronic devices consisting of a system of electrodes arranged in an evacuated glass or metal envelope. (Source: wordnet.princeton.edu)
Broader Term
Electronic equipment (Qtbe)
Narrower Terms
Cathode ray tubes (Qtbefc)
Vacuum tubes (Qtbefv)
Related Terms (Hierarchical)
Analog to digital converters (Qtbea)
Charge coupled devices (Qtbeb)
Cryogenic devices (Qtbec)
Dampers (Electronics) (Qtbed)
Diodes (Qtbee)
Electronic components (Qtbeh)
Electronic controllers (Qtbei)
Integrated circuits (Qtbej)
Microwave devices (Qtbem)
Millimeter wave devices (Qtbeo)
Pulse generators (Qtbep)
Semiconductor devices (Qtbeq)
Solid state devices (Qtbes)
Transistors (Qtbet)