It happens that tabby formulated :
On Friday, 1 January 2016 13:23:18 UTC, Bert Coules wrote:
Roger, thanks for that. I would have noticed any rapid switching on and
off, I think.

not at 100 times a second you won't. It kills bulbs.


NT

You sir are an idiot! Switching on and off 100 times per second is
normal operation on a/c mains.

--
Regards,
Harry (M1BYT) (L)
http://www.ukradioamateur.co.uk