On 07/06/2017 12:12 PM, frank wrote:
Phil Hobbs wrote:

You can get Barkhausen oscillations in light bulbs, as I said. If you
have a spectrum analyzer, you can find out pretty fast.

I do have one (of course, I'd say). My radio reception (hamradio bands) has
never been disturbed by incandescent lights though (and it's about
the only electric thing that doesn't make any RF nowadays).

Right, the argon-filled ones don't show the effect--the gas pressure is
much too high. If the transient suppressor has that much gas in it, it
definitely won't be Barkhausen oscillation.

In the next days (as I find time) I'll try to run the transient suppressor
with a small dc current and see if it oscillates (and at what frequency).

I'll be interested in the results.

Cheers

Phil Hobbs
--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC
Optics, Electro-optics, Photonics, Analog Electronics

160 North State Road #203
Briarcliff Manor NY 10510

hobbs at electrooptical dot net
http://electrooptical.net