[time-nuts] Re: HP 10638a degausser

[Bill Ezell]

I went ahead and put the zip in my Google Drive share, here's the link: 
https://drive.google.com/file/d/11d-Zr5lsdPibUvvNgWGhUFuTFCItxuII/view?usp=drive_link

Bill

On 7/24/2023 2:45 PM, Bill Ezell wrote:
>
> I did the degausser replacement way back as noted. I still have all 
> the files.
>
> I did follow the design of the original HP version to a fair extent, 
> hence it uses an RC analog decay generator, relays, and such.
>
> The microprocessor it used is obsolete, you might be able to find one, 
> or do a minor redesign to use a modern one, or just use one of those 
> tiny ESP all-in-one boards with some software tweaking.
>
> Also, the relays called out have polarized coils. I had the polarity 
> swapped on the coils in one version of the pcb, I don't remember if I 
> corrected that. In any case, the relays aren't critical, pick whatever 
> you want to use that will fit.
>
> Gmail won't let me send a zip. I hate facist mail systems. If you want 
> it, email me and I can set up a dropbox share or some such.
>
> Bill
>
> --
>
> Bill Ezell
>
> All ducks quack. All ducks waddle. But, few quote Tennyson.
>
-- 
Bill Ezell
All ducks quack. All ducks waddle. But, few quote Tennyson.