5XP: Difference between revisions
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The '''DuMont 5XP''' is a family of flat-faced 5" CRTs produced from 1948 onward. A 5XP-A series with tighter tolerances followed in 1953,and a 5XP-B range in 1954 that had an aluminized screen for higher brightness. | The '''DuMont 5XP''' is a family of flat-faced 5" CRTs with [[multi-band acceleration | multi-band post accelerators]], produced from 1948 onward. A 5XP-A series with tighter tolerances followed in 1953, and a 5XP-B range in 1954 that had an aluminized screen for higher brightness. | ||
Compared to earlier tubes, they had improved vertical deflection sensitivity, which was achieved by decreasing vertical deflection plate width and reducing spacing between the plates, at the cost of limiting vertical scan | Compared to earlier tubes, they had improved vertical deflection sensitivity, which was achieved by decreasing vertical deflection plate width and reducing spacing between the plates, at the cost of limiting vertical scan to as little as 1.25" (at 20 kV acceleration). | ||
Maximum acceleration voltage was 25.5 kV. | Maximum post-acceleration voltage was 25.5 kV, typical conditions are stated as -2 kV on the cathode and +12 kV on the post-acceleration anode. | ||
They are used in early models of the [[513]] and [[517]], before Tektronix switched these to Tek-made CRTs. | They are used in early models of the [[513]] and [[517]], before Tektronix switched these to Tek-made CRTs. | ||