CATODO COMPENSATO,PARTICOLARMENTE ADATTO PER TUBI A RAGGI CATODICI
The invention relates to thermo-electronic cathodes. A dispenser cathode capable of operating with current densities reaching 10A/cm comprises a reservoir made of refractory metal 14 which contains a pastille of tungsten and barium-calcium aluminate 16 and which is closed off by a pastille of porous...
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| Format: | Patent |
| Sprache: | ita |
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| Zusammenfassung: | The invention relates to thermo-electronic cathodes. A dispenser cathode capable of operating with current densities reaching 10A/cm comprises a reservoir made of refractory metal 14 which contains a pastille of tungsten and barium-calcium aluminate 16 and which is closed off by a pastille of porous tungsten 18. The cathode may be incorporated into an integrated structure comprising three cathodes of this type, which are mounted in an insulating housing 22 by means of insulating rings 34. Application to colour cathode ray tubes. |
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