Quote:
Originally Posted by nasadowsk
After vacuuming the floor in here while waiting for my shirts to dry (Yay single male life!), i was wondering:
When did Zenith get auto degauss? I know RCA had it with CTC 16x. Did any Zenith roundies have it?
And also, when did Zenith start using pulse regulators in lieu of the ever-popular 6BK4? And naturally, did any of their roundies use it?
Bonus thought- does anyone know the logic behind the wacky power rectifiers used in their first color chassis?
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I know Zenith had the auto degaussing in M line and N line roundys...My old L line didn't have it, but I forget if the schematic showed it as optional.
Zenith stopped roundys at N line and those still used 6BK4s for regulation...I think the N line rectangular sets used the old 6BK4 shunt reg too. The pulse regulator was rectangular only AFAIK.
The oldest pulse regulator Zenith I have is a Y line (1968).
Zenith's first color set the 29JC20 did use 2 3DG4s...IIRC the power consumption is around 500W and I remember when one of the rectifiers got gassy and started arcing over internally, pulling it and watching the other shortly start doing the same from being overloaded...
I eventually found 2 healthy ones in my bins and that made it happy again.