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Plasma TV = SMPS + PWM display

Posted by gusser (A) on May 22, 2017 at 14:08:16

In Reply to: Unplugged Plasma TV and Installed Genelex Gold Lion GZ-34 Rectifier tube. Wow! posted by artemus on May 21, 2017 at 10:51:52:

There's really nothing special about a Plasma TV power wise over most other modern AV gear. That being a switch mode power supply. All TV's have had these since the mid 1980s.

I guess the only specific drawback with the Plasma is they do draw more power and thus the power supply may emit more RFI/EMI. And the display panel is PWM based to make gray scales (neon lights don't dim linearly) so that too can emit RFI/EMI.

But consider Europe has strict standards for RFI/EMI with the USA being a bit more lax. But as these TVs are sold world wide, they conform to the strict European standards.

So while it's possible, there shouldn't be much EMI/RFI from a TV unless your tube gear is right under it.

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