Question about flybacks circuit changes

[dtvmcdonald]

This is a general question, though the context is the CT-100 and 21CT55.

What happens to the operation of the "typical" flyback circuit, like those
or just the garden 1950s large BYW set, when things get disconnected?
By that I mean ... does the (AC, pulse) voltage go up or down, does the
average horizontal output tube cathode current go up of down, if you ...

1) remove HV rectifier cap

2) use an HV rectifier tube with blown filament

3) unplug damper

4) unplug damper but wire in a resistor to get B+ to the horizontal output tube

5) disconnect yoke

6) vary the load (i.e. brightness)

7) lower (but not raise) the horizontal output tube screen voltage

8) various combinations such as 3) and one of the others?

The idea is ... what's likely (or not) to harm the horizontal output tube
or the flyback, or cause arcing?

Of course one can experiment using a variable B+ voltage, starting low enough to be sure of no harm (presumably no lower than the screen voltage)

It may be that nobody knows, except for things known to cause disaster


Doug McDonald