View source for Multi-band acceleration

[[File:Multiband accelerator.jpg|thumb|400px|right]]
Instead of the previously used single [[post-deflection acceleration]] electrode, high-performance CRTs in the 1940s/1950 began using a series of separate accelerator electrode bands applied to a cylindrical bulb.  These bands were separated by insulating bands, and supplied with progressively higher voltages through individual HV connectors.

A disadvantage of this scheme is the additional distortion and compression it causes.

[[File:Dumont 5xp11 1.jpg|thumb|400px|right|The [[5XP]] CRT is an example of a tube using multi-band acceleration.]]
Multi-band accelerators were replaced by [[spiral accelerator]]s in the course of the 1950s.

==Literature==
* {{Keller 1991|pp.103-104}}
* [[Media:062-0852-01.pdf | Oscilloscope Cathode-Ray Tube Concepts]], Chuck Devere, 1969; p.47+
* [https://ir.library.oregonstate.edu/downloads/5425kd53s Design and development of a non-compressing post-deflection method for CRTs] (Perkins, 1967)


<gallery>
Tek 513 left2.jpg  | Multiple acceleration voltages are applied to the [[5XP]] CRT in the [[513]]
Dumont 5xp11 1.jpg | The 5XP tube
</gallery>

[[Category:Cathode ray tubes]]
[[Category:Circuits and Concepts]]