[Findm-Keepm]

Originally Posted by Username1

These are probably the most important things you can do before you get
into modifying the circuit design.... But what if you wanted more protection?

Electrically transformers are made up of a pure inductance component and a
resistive component, It's the resistive component that ends up getting hot.
It's the inefficient part of the wire we can't do anything about inside the
flyback....

I'm wondering, If you wanted to shave an extra 20ma. off the current running
through the flyback, could ya do it be adding possibly 2 - 10 Ohm, @ 10 to 20
watt wire wound resistor to the horizontal output cathode circuit, and
possibly shift some of that heat to the resistor and away from the transformer....?

Anyone with one of these sets on the bench willing to test it ? Naturally,
you would have to be sure it didn't cause any width problems... Etc....

Not sure if it should be in the cathode circuit, or on the business winding
on the flyback supply, probably not too smart to put in in there on the plate
cap end.... Maybe on the other side of that..... I don't have a schematic
for that set, so can't come up with the exact point.....

Anyway, my thinking is, if the resistive component in the flyback "primary"
is say 20 Ohms, and you add a 5 Ohm resistor, will you shift enough heat
off the transformer to have it not melt the wax....? And still not effect
the rest of the set materially.....?

.

No effect at all. Think about it, when you put a milliammeter in the circuit to check the current, you are adding the DC resistance of the meter, which is several hundred ohms, and you still have 200 mA in the circuit.