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)
“Even crushed against his brother in the Tube the average Englishman pretends desperately that he is alone.”
—Germaine Greer (b. 1939)
“For do but note a wild and wanton herd
Or race of youthful and unhandled colts
Fetching mad bounds, bellowing and neighing loud,
Which is the hot condition of their blood;
If they but hear perchance a trumpet sound,
Or any air of music touch their ears,
You shall perceive them make a mutual stand,
Their savage eyes turned to a modest gaze
By the sweet power of music.”
—William Shake{peare (1564–1616)