On Mon, 19 Oct 2020 17:38:37 -0700 (PDT), whit3rd
wrote:

On Sunday, October 18, 2020 at 3:19:45 PM UTC-7, wrote:
On Sat, 17 Oct 2020 11:37:18 -0700 (PDT), whit3rd
wrote:

On Saturday, October 17, 2020 at 10:25:15 AM UTC-7, wrote:
On Sat, 17 Oct 2020 01:58:55 -0700 (PDT), whit3rd
wrote:

But fluorescents with an electronic ballast don't have 120 Hz or 60 Hz modulation (flicker).
If you work with moving machinery, that's an important advantage.

LEDs are no different.

False. A 4 kHz AC ballast for fluorescent tubes sustains a plasma that gives off light
continually, but the same with LEDs doesn't get the same effect, because LED turns
dark in a microsecond, but fluorescent turns dark in a millisecond.

Put an electronic ballast behind both and call me again.

No need; the plasma lifetime in fluorescent tubes is known, and their ballasts always deliver AC instead
of DC because of filament sputter erosion. The AC will make LEDs go dark at zero crossings,
because those LED filled tubes (I've dissected some) have only diodes, no energy storage.

Maybe the cheap crap but it's not all cheap Chinese crap. There are
such things as switching power supplies. No zero crossing - current
controlled (i.e. a ballast).