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Yes, the GTAs and GTBs have more controlled warmup time...

especially the Bs, which had a controlled warm-up specifically for use where the heaters were in series (e.g. in TVs) so that they wouldn't overvoltage on turn-on. The earlier tubes didn't have that.


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  • Yes, the GTAs and GTBs have more controlled warmup time... - JimL 20:19:31 01/28/06 (0)


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