Doctor Speck,
??? The problem is is that I live in a semi-rural area and the next closet provider is 15 miles away. My disability precludes me from wearing a mask but my doctor has entered in to my medical records that I must wear one so they won't allow me in the building. They are denying me medical service because of my disability. I have talked to ADA but they say that medical groups are exempted from complying. I don't know what to do. This is a death sentence.
GOD Bless and Thanks,
rich!

On 9/16/2020 1:22 PM, David Speck wrote:

Richard,

Then it's time to find a different medical provider.? There are lots of different ones out there.

David D; Speck MD

On 9/16/2020 2:07 PM, Richard R. Pope wrote:

Paul,
??? I appreciate it. The hard part is that I can't get medical care. I am being refuse by my provider.
GOD Bless and Thanks,
rich!

On 9/16/2020 9:05 AM, paulswed wrote:

I had seen the S-100 mention and figured it was something else I did not know. The Altair was my first boxed computer about 1975-6?

It is indeed one and the same. :-)

Rich sorry to?hear the reason for getting rid of everything.

Regards

Paul

On 9/16/20 1:24 PM, David Holland wrote:
> Speaking of Fusion360..
>
>
>
> The elimination of export options (STL particularly) makes it appear
> AutoDesk?want?sto hold onto your data, and be the only tool you can
> use..? (And will be the reason I uninstall it.)

? ?This is, of course, why such services exist.? I hope nobody actually
thought it was some high-minded civic thinking that motivated Autodesk
to offer that service to the public.

? ? ? ? ? ? ? ? -Dave

--
Dave McGuire, AK4HZ
New Kensington, PA

I’m surprised no one has mention fusion360. Full CAD/CAM with Eagle now as well.
3D parametric, direct manufacture to 3D printers. I send to both simplify3D and chitubox all the time.

Easy to use. Still no cost to makers.

On open source
Some comments.? I’ve run into countless projects that die or are abandoned in the opensource community.? Yeh some of the big stay around but far greater go nowhere.

Opensource is not this great pancea of perfection.? If your not a developer yourself you can only hope they’ll accept your proposal for a change.? Personal experience is they don’t always do this.? In fact in my experience they rarely do.? It does not fit the authors vision of how it should work.

I love Perl. But the community refused for the longest time to accept ebcdic(mainframe) into the their world.? And only did by making it ascii internally which has its own problems for those of us in the mainframe.

I’m not against opensource, I use it all the time. Like anything it has it’s upside and downside.

Sandra

7 Plus

> On Sep 8, 2020, at 9:29 AM, Chuck Harris <cfharris@...> wrote:
>
> ?Bear in mind that one of the features of open source projects
> is they really never go away.? Commercial projects come and vanish,
> and change their licensing terms with great regularity.
>
> OpenSCAD is used by dozens of other projects, and is a very solid
> package.? The source is available on github, and if you don't like
> the direction the authors are going, you can take it and make it
> your way.? Sure, if you aren't talented that way, you will have to
> hire it done, but that is what you are already doing with the outright
> commercial packages... without any hope of customization.
>
> If OpenSCAD is too hard to learn (it isn't), you can use one of the
> many packages, like FreeCAD, that have incorporated it into their
> graphic interfaces.
>
> We greybeards remember the PC so well, that we wrote GNU and linux
> for it, and emancipated ourselves from Microsoft.
>
> Educator licenses are available to universities to allow them to
> train their kiddies on the package at no cost to the university.
>
> The university professor gives a 1 year copy to each student, and
> they use it for their course work.? At the end of the year, it is
> inactivated.
>
> The companies do that because it is free advertising, and a free
> beta testing of their product.? They also know that once trained on
> a product, students will ask for it where they work.
>
> That is the sole and only reason Apple and Microsoft have such nice
> licensing terms for K-12 schools.
>
> Also, to use a student license, usually you are required to show
> registration at a university.? The rules on student licenses are
> highly restrictive relative to commercial intention.? A product
> designed on a student license cannot ever be commercialized without
> transferring it to a full on commercial seat... at typically $50K a
> seat... and once there, it can never be brought back to a student
> seat.
>
> -Chuck Harris
>
> Tom Gardner wrote:
>> Overall I doubt that members of this group will want to make anything really complex,
>> but they might like it to be available to other members in a decade or so. So have a
>> quick look and choose any tool that feels comfortable without a large learning curve.
>>
>> After a///very//quick look/, it appears that OnShape is....
>>
>> Free for "educators", with a 1 year time limit on the licence - whatever that means.
>>
>> Online only, running in a browser like OpenJSCAD. The standard questions with any
>> "cloud service" are whether:
>>
>>? * it will be there in 5 years time; see Microsoft PlaysForSure(TM), and giggle
>>? * the licence conditions can be changed, e.g. is the company/product changes ownership
>>
>> Greybeards will remember the sighs of relief when PCs became available, because it
>> meant that users' data was not "held hostage" inside silos owned by other companies.
>>
>>
>>
>>> On 08/09/20 02:54, Kuba Ober wrote:
>>> OnShape - as long as it’s not for commercial purposes - all your projects are
>>> publicly viewable then. A joy to use. All it needs is an OK internet connection and
>>> a supported web browser.
>>>
>>> FreeCAD is another option.
>>>
>>>> 7 sep. 2020 kl. 10:17 fm skrev victor.silva via
>>>> <daejon1=[email protected]>:
>>>>
>>>> ?This is off topic but the end result will be for HP products so please bear with me.
>>>>
>>>> I am looking for recommendation on 3D modeling software (preferably freeware) and
>>>> a company that I can then send the 3D model to
>>>> make a battery holder clamshells.? I propose to make half clamshell pieces that
>>>> would then make a complete
>>>> battery holder by using 2 pieces that would fit together.
>>>>
>>>> Thank you,
>>>> Victor
>>
>>
>
>
>

Hello Folks,

sorry for making a nuissance of myself, but I have heard of similar substitutions being done.

I know of a fact that someone at EEVblog used a set of Mean Well PSUs on a 53310A. My ex lab gypsy swears her hands that a friend of her did something similar to a Danaher AWG2021 (two channel model) which the friend did not want to give up on.

IMHO, it is possible. But most of these conversions I have seen had the Mean Well bricks outside, as a sort of "power system", and only a small box with LC filters inside the TMI. Also, the usual caveats apply:

Mean Well is probably the most faked brand of PSU in the world...

Tam

With best regards
Tam HANNA 

Enjoy electronics? Join 15k7 other followers by visiting the Crazy Electronics Lab at  

On 2020. 09. 16. 4:24, Michael A. Terrell wrote:

Has anyone ever tried installing a switching supply in a 3325A/B?

On Tue, Sep 15, 2020 at 10:22 PM Mike Feher <n4fs@...> wrote:

Hi Kuba –

?

Well I guess this is off topic, but I am surprised someone even recognized the MF10. I had to be on the phone with the National design engineers as I was blowing them up. They told me that on the early ones I had to sequence the power on them. They eventually put out a little book on the part. They sent me a preliminary copy. I used them to design elliptic filters since in those I can have control of where the zeroes go and they have the best or narrowest transition band. They worked great and we provided a couple of them to the Navy. BTW, your books are still waiting for you. Regards – Mike

?

Mike B. Feher, N4FS

89 Arnold Blvd.

Howell NJ 07731

848-245-9115

?

From: [email protected] <[email protected]> On Behalf Of Kuba Ober
Sent: Tuesday, September 15, 2020 9:59 PM
To: [email protected]
Subject: Re: [HP-Agilent-Keysight-equipment] HP 3325A power supply repair

?

Oh wow - MF10. What a cool part! I used it in various instrumentation jobs. Another one that I still use is the switched cap building block LTC1043 – it did things that were thard to do otherwise, but opamps got really good these days so it finds only niche use. But when you need it - it’s great.

?

Cheers, Kuba

15 sep. 2020 kl. 2:18 em skrev Mike Feher <n4fs@...>:

?

I purchased a brand new 3325A from HP back in 1983 or so for a company where I was director of Engineering. I was designing switched capacitor digital filters then using the National MF10 devices. Regardless after I resigned from that company, their engineering dept. dissolved and they called me and asked if I wanted to buy the TE that now they were no longer using. Sure, I bought a truckload for $1000 including the 3325A. The generator worked flawlessly for years and then started having problems. I eventually had to look inside it and found a manufacturing problem. There was an inline Molex style connector from the PS to the rest of the gen. One of the contacts was not crimped well enough and over years of high resistance overheating, melted the connector. Lucky for me, a simple fix. Regards – Mike

?

Mike B. Feher, N4FS

89 Arnold Blvd.

Howell NJ 07731

848-245-9115

?