RCA 21" triage CTC20 CTC16x CTC12

[DavGoodlin]

Originally Posted by Yamamaya42

I am really starting to wonder what the RCA engineers were smoking when they made the CTC-20...
From what I have seen, almost all leading up to it has had the FBT power taken from a shared point on the vert output transformer, and thus, if the yoke was not plugged in, HV was shut off as a safety feature. ( this is a guess by observation ).
But there seems to be no such thing in the 20, what were the thinking? :O

True for the rectangular sets using a yoke plug. None of the 21" round sets used an interlock in the B+ as those did, all were connected with the familiar Red and Blu for Horz and for vertical, Yellow and Yellow with a Black-stripe all individual leads.

Sams did not show (dotted line) that the CTC20C has the Yel/Blk lead grounded! I lit the 6DW4 damper tube up when mis-wired the yoke leads initially