27-11-2019, 05:59 PM
Definitely a masochistic approach to design broadband amplifiers with valves when transistors make it so easy.
You've used Hutson's book as a reference. The other book that looks at valve video amplification is Television Engineering by Amos and Birkinshaw. It's volume 2 of the 4 volume set that you need.
Ultimately normal valve arrangements run out of steam for wideband amplification and then you need distributed amplifiers. Widely used in Tektronix 'scopes, with rows of ECC88 (6DJ8). I think they were first suggested by Percival at EMI before WW2. Wikipedia confirms my memory: https://en.wikipedia.org/wiki/Distributed_amplifier
You've used Hutson's book as a reference. The other book that looks at valve video amplification is Television Engineering by Amos and Birkinshaw. It's volume 2 of the 4 volume set that you need.
Ultimately normal valve arrangements run out of steam for wideband amplification and then you need distributed amplifiers. Widely used in Tektronix 'scopes, with rows of ECC88 (6DJ8). I think they were first suggested by Percival at EMI before WW2. Wikipedia confirms my memory: https://en.wikipedia.org/wiki/Distributed_amplifier
www.borinsky.co.uk Jeffrey Borinsky www.becg.tv
