Re: big L

On Sat, 21 Dec 2024 14:28:52 +0000, Martin Brown
<'''newspam'''@nonad.co.uk> wrote:

On 17/12/2024 14:58, john larkin wrote:

What's the biggest inductor, the most Henries, that you know of? I
seem to recall some audio transformer that was something like 100 H.

>
I think the Fermi Lab's Tevatron magnet at 1000H and 1500A is one of the
largest ever made but some of the latest GW class mains substation
transformers must have similar levels of inductance and stored energy.
>
See:
https://electronics.stackexchange.com/questions/303320/what-is-the-largest-inductance-value-ever-attained-in-henries

That's cool.

I guess an old neon sign transformer could have a huge inductance,
ballpark 1000 Henries maybe, assuming that leakage inductance is the
main current limiter.

I had a giant one when I was a kid, 15 KV with insulators on both
ends. The Jacobs Ladder arc must have been almost a foot long. Wish I
still had it.

I'm designing inducor sumulators and am curious about how big real
inductors ever get. My buddies at a big aerospace test outfit say they
don't see anything above 2 H.