Diff: Philips

Differences between current version and predecessor to the previous major change of Philips.

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Newer page: version 3 Last edited on 5 January 2022 4:51 by harold
Older page: version 2 Last edited on 5 January 2022 4:50 by harold Revert
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 Philips valves dominated the market in much of Europe. Their side-contact series standardized basing in Europe, at the same time as the Octal base became the standard in American dominated markets. However before the Second World War Philips made only a minor penetration into the British sphere of influence, despite having launched an octal based "Red" series to compete with the American Octal series. Some charts have data slipped sideways by a column due to a missing "Mutual Conductance normal" column. 
  
 *[Miniwatt Valves|Upload:PhilipsMiniwatt1938.pdf] - 1938 catalog of receiving tubes. Contributed by Tim Hughes. 11MB 
+* [PM 6667, PM 6668|Upload:harold/PhilipsPM6667-6668.pdf] Frequency Counter  
  
  
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-* [[Upload:harold/PhilipsPM6667-6668.pdf]]  

current version

Philips

Philips valves dominated the market in much of Europe. Their side-contact series standardized basing in Europe, at the same time as the Octal base became the standard in American dominated markets. However before the Second World War Philips made only a minor penetration into the British sphere of influence, despite having launched an octal based "Red" series to compete with the American Octal series. Some charts have data slipped sideways by a column due to a missing "Mutual Conductance normal" column.

*Miniwatt Valves - 1938 catalog of receiving tubes. Contributed by Tim Hughes. 11MB

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