[GreenKeys] [External] Re: Teletype Part Numbers

[Jones, Douglas W]

From: Dave Horsfall [dave at horsfall.org] -- Monday, December 14, 2020 2:35 PM

> On Wed, 9 Dec 2020, Jim Cooper wrote:
>> Here's a simple explanation. ...
>
> It's all about inductance, and how coils hate current :-)

But coils love current (-:  Give them some current, and they'll insist on that much current even if you open the circuit!