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Audio and Video Talk
Valves / Vacuum Tubes
Valve data books
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<blockquote data-quote="kubusi" data-source="post: 762630" data-attributes="member: 19010"><p>Hi Charles,</p><p>I am surprised that you turned up a number of errors in the Avo data books, in my first posting I mentioned that I considered them generally beyond reproach, I too have a few different editions and normally work with the latest edition I have and have never cross checked against earlier editions. I must bear it in mind in future in view of what you have come up with. </p><p></p><p>Looking at early valve data books makes interesting reading at times, especially when the then current prices are listed, one particular valve comes to mind, a Mullard acorn valve in 1936 with a 4 volt heater was priced at 60/- a hell of a high price at that time, average workman's weekly wage about a quid or so and a small car would have been about ?100, so just a single valve costing about 3% of the price of a new car!! Translate that into our present day prices.</p></blockquote><p></p>
[QUOTE="kubusi, post: 762630, member: 19010"] Hi Charles, I am surprised that you turned up a number of errors in the Avo data books, in my first posting I mentioned that I considered them generally beyond reproach, I too have a few different editions and normally work with the latest edition I have and have never cross checked against earlier editions. I must bear it in mind in future in view of what you have come up with. Looking at early valve data books makes interesting reading at times, especially when the then current prices are listed, one particular valve comes to mind, a Mullard acorn valve in 1936 with a 4 volt heater was priced at 60/- a hell of a high price at that time, average workman's weekly wage about a quid or so and a small car would have been about ?100, so just a single valve costing about 3% of the price of a new car!! Translate that into our present day prices. [/QUOTE]
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Audio and Video Talk
Valves / Vacuum Tubes
Valve data books
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