Statements (51)
| Predicate | Object |
|---|---|
| gptkbp:instanceOf |
gptkb:microprocessor
|
| gptkbp:advantage |
large size
fragility high power consumption high voltage tolerance robustness to electromagnetic pulses shorter lifespan compared to solid-state devices |
| gptkbp:alsoKnownAs |
vacuum tube
thermionic valve |
| gptkbp:canBe |
directly heated
indirectly heated |
| gptkbp:category |
discrete components
thermionic devices |
| gptkbp:component |
grid
anode cathode |
| gptkbp:example |
transistor
pentode tetrode triode |
| https://www.w3.org/2000/01/rdf-schema#label |
electron tube
|
| gptkbp:introducedIn |
1904
|
| gptkbp:inventedBy |
gptkb:John_Ambrose_Fleming
|
| gptkbp:material |
gptkb:vacuum
glass envelope metal electrodes |
| gptkbp:operatesIn |
gptkb:vacuum
|
| gptkbp:principle |
thermionic emission
electron flow in vacuum |
| gptkbp:regulates |
current flow
|
| gptkbp:relatedTo |
gptkb:microprocessor
transistor solid-state electronics |
| gptkbp:replacedBy |
transistor
|
| gptkbp:requires |
heater
vacuum pump (during manufacture) |
| gptkbp:usedFor |
amplification
switching rectification signal modulation |
| gptkbp:usedIn |
microwave ovens
oscilloscopes early computers radios televisions audio amplifiers high-end audio equipment radio transmitters specialized scientific equipment |
| gptkbp:bfsParent |
gptkb:The_Electron
|
| gptkbp:bfsLayer |
5
|