How scarce (valuable) is core for the PDP-8?

From: Chuck McManis <cmcmanis_at_mcmanis.com>
Date: Tue Apr 20 18:04:16 1999

At 06:49 PM 4/20/99 -0400, you wrote:
><Perhaps soft iron #2 washers would be a better choice. The local hardware
>
>Same material as the nuts. A higer carbon steel (more remnant magnetizem)
>may work but you really want small to keep the drive resonable.

I'm not sure I parsed this. At my local hardware store the nuts were made
of Zinc (not steel) and but the washers were made of "soft iron" which I
thought meant there was a _lower_ carbon content than "steel" washers. (The
washers are designed to be compliant whereas the nuts are quite hard)

But assuming I have something worth trying, and I've got my HP pulse
generator set up to drive a fast rise time buffer amp (so I can get a
reasonable amount of current) what else do I need to do to verify that I've
successfully "flipped" the device. (My first guess would be a garden
variety compass)

--Chuck
Received on Tue Apr 20 1999 - 18:04:16 BST