audion vacuum tube
E1029
The audion vacuum tube is an early electronic amplifying device invented by Lee de Forest that enabled long-distance radio communication and laid the groundwork for modern electronics.
Aliases (1)
Statements (45)
| Predicate | Object |
|---|---|
| instanceOf |
electronic amplifying device
→
thermionic valve → vacuum tube → |
| alsoKnownAs |
Audion
→
|
| anodeFunction |
collects electrons
→
|
| category |
electronic components
→
radio technology → |
| cathodeFunction |
emits electrons when heated
→
|
| contributedTo |
development of modern electronics
→
|
| countryOfOrigin |
United States
→
|
| developedBy |
Lee de Forest
→
|
| enables |
long-distance radio communication
→
|
| era |
early 20th century
→
|
| filamentFunction |
heats cathode
→
|
| gridFunction |
controls plate current
→
|
| hasComponent |
anode
→
cathode → control grid → filament → glass envelope → |
| hasType |
triode
→
|
| historicalSignificance |
first practical electronic amplifier
→
key technology in early radio broadcasting → |
| influenced |
design of vacuum tube amplifiers
→
development of electronic communication systems → |
| inventor |
Lee de Forest
→
|
| material |
glass
→
metal electrodes → |
| medium |
evacuated glass bulb with low-pressure gas remnants
→
|
| operatingPrinciple |
control of electron flow by grid voltage
→
thermionic emission → |
| patentHolder |
Lee de Forest
→
|
| powerSource |
direct current supply
→
|
| predecessorOf |
later triode vacuum tubes
→
|
| replacedBy |
improved triode tubes
→
transistor → |
| usedFor |
audio amplification
→
detection of radio signals → radio reception → radio transmission → signal amplification → |
| usedIn |
early electronic circuits
→
early radio receivers → early radio transmitters → telephone repeaters → |
Referenced by (2)
| Subject (surface form when different) | Predicate |
|---|---|
|
De Forest Radio Telephone Company
→
|
associatedWith |
|
Lee de Forest
("Audion vacuum tube")
→
|
knownFor |