UN TUBO ELECTRONICO QUE TIENE UNA DISPOSICION DE ELECTRODOS DESLIZADA DENTRO DE UNA PARTE TUBULAR DE UNA AMPOLLA DE VIDRIO

摘要

In an electron tube having a glass envelope portion (1) is an electrode system (3) which is slid in the envelope portion (1) and is centered with respect to the wall (7) of the envelope portion (1) by means of a number of pretensioned springs (6). The springs (6) each extend from a supporting point B, which is fixed with respect to the electrode system (3), over their effective spring length toward the wall (7) of the envelope portion (1) and press against the wall (7) at a contact point A. A stick-slip movement of the springs over the surface of the wall (7) during the sliding movement of the electrode system (3) is avoided because the springs (6) each extend over their effective spring length along a straight line between supporting point B and contact point A. Flowing of the springs and the resulting occurrence of glass damage to the wall (7) is minimized by this spring configuration.