Transmitting Tube Hot Cathode Characteristics
| Material | Operating temperature | Emission efficacy | Specific emission |
|---|---|---|---|
| Tungsten | 2500 K | 5 mA/W | 500 mA/cm2 |
| Thoriated tungsten | 2000 K | 100 mA/W | 5 A/cm2 |
| Oxide coated | 1100 K | 500 mA/W | 10 A/cm2 |
| Barium aluminate | 1300 K | 400 mA/W | 4 A/cm2 |
Read more about this topic: Hot Cathode
Famous quotes containing the words transmitting, tube and/or hot:
“Anyone who has obeyed nature by transmitting a piece of gossip experiences the explosive relief that accompanies the satisfying of a primary need.”
—Primo Levi (1919–1987)
“One of the great natural phenomena is the way in which a tube of toothpaste suddenly empties itself when it hears that you are planning a trip, so that when you come to pack it is just a twisted shell of its former self, with not even a cubic millimeter left to be squeezed out.”
—Robert Benchley (1889–1945)
“Too often when you thought you’d be showered with confetti
What they flung at you was a plate of hot spaghetti
You’ve put your fancy clothes and flashy gems in hock
Yet you pause before your father’s door afraid to knock”
—John Ashbery (b. 1927)