Which sine wave is suitable for a CRT TV?

Question

Batteries

Good afternoon.
You need to make an inverter 12-> 220 to power the CRT TV https://hi-tech.mail.ru/vityaz_14_ctv_750_3_zodiac... There is no option to change the TV to LCD. there is a need to do it for this TV and with your own hands.
The question is, do you need a pure sine wave for such a TV, or can you get by with a modified one? I found extremely diverse information, starting with a very strong overheating from a modified sinusoid, ending with normal operation.

Answer 1

As the name suggests, it's a 7th generation TV. Starting from the 5th (Horizon 510, etc.), there were no ordinary transformers in the duty room.
You can’t power it with a constant - there is a demagnetization loop in it, and a kinescope will immediately magnetize from the constant - all colors will go away.
So: for this TV to work, any change is needed, even a meander ...
Elementary: take any used UPC with a cold start, check how the TV works from it, and then transfer its giblets into your case with your own hands ...

Answer 2

All modern TVs have pulse power supplies, they do not need a sine wave. You can even power it with constant voltage.