Quote:
Originally Posted by jr_tech
I remember the model 606 with 5 25Z6 rectifiers for B+, but didn't they use a transformer for the 6.3 volt heaters?
jr
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Our first family TV was the 12" version of that chassis, a later run.
It had two larger selenium rectifiers and two smaller ones. It had two B+ supplies, stacked to provide 390 volts for the vertical sweep. It had a mess of electrolytics, where the five 25Z6's were originally and a ballast tube.
The transformer was rather large and only furnished the 6 volts, for the heaters and a separate 5 volt winding, for the 5V4 damper.
It always amazed me, that they went through all that trouble, instead of just using a regular transformer and vacuum tube rectifier.
08-29-2014, 08:40 AM
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