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Old style oval HP power cords


 

Ran across these when looking for something else:



Reproduction oval power cords. A bit pricey at $40, but if you need one ...

No connection with seller, yada yada.

Paul
--
Paul Amaranth, GCIH | Manchester MI, USA
Aurora Group of Michigan, LLC | Security, Systems & Software
paul@... | Unix/Linux - We don't do windows


 

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If you obtain one Remember to Verify Hot and Neutral as they may be reversed...
搁别苍é别

On 1/2/24 8:27 AM, Paul Amaranth wrote:

Ran across these when looking for something else:

   

Reproduction oval power cords.  A bit pricey at $40, but if you need one ...

No connection with seller, yada yada.

  Paul


 

On 1/2/24 09:36, 搁别苍é别 wrote:
Remember to Verify Hot and Neutral as they may be reversed...
I just upgrade any I use to IEC connector with a little drilling and filing...


 

I did run across a post from Dale Cook where he says you can often shave
down a standard IEC cord to fit and it will have the correct configuration.
I'm going to give that a try. It's less work than changing out the chassis
receptacle.

Personally, I don't have any objection to fitting a standard IEC
socket if it fits in most circumstances. I would not do that for
my HP 9100B though.

Paul

On Tue, Jan 02, 2024 at 09:45:10AM -0700, John Griessen wrote:
On 1/2/24 09:36, 搁别苍é别 wrote:
Remember to Verify Hot and Neutral as they may be reversed...
I just upgrade any I use to IEC connector with a little drilling and filing...
--
Paul Amaranth, GCIH | Manchester MI, USA
Aurora Group of Michigan, LLC | Security, Systems & Software
paul@... | Unix/Linux - We don't do windows


 

How would that work? The Belden uses round pins/sockets whereas the IEC uses flat pins/sockets.

Thanks,
Barry - N4BUQ

I did run across a post from Dale Cook where he says you can often shave
down a standard IEC cord to fit and it will have the correct configuration.
I'm going to give that a try. It's less work than changing out the chassis
receptacle.

Personally, I don't have any objection to fitting a standard IEC
socket if it fits in most circumstances. I would not do that for
my HP 9100B though.

Paul

On Tue, Jan 02, 2024 at 09:45:10AM -0700, John Griessen wrote:
On 1/2/24 09:36, 搁别苍é别 wrote:
Remember to Verify Hot and Neutral as they may be reversed...
I just upgrade any I use to IEC connector with a little drilling and filing...
--
Paul Amaranth, GCIH | Manchester MI, USA
Aurora Group of Michigan, LLC | Security, Systems & Software
paul@... | Unix/Linux - We don't do windows



 

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you change the chassis receptacle to match - I have done this myself so not to have odd cables or at the time unobtanium....although sometimes ya has to stick to the original...
搁别苍é别

On 1/2/24 9:14 AM, n4buq wrote:

How would that work?  The Belden uses round pins/sockets whereas the IEC uses flat pins/sockets.

Thanks,
Barry - N4BUQ

I did run across a post from Dale Cook where he says you can often shave
down a standard IEC cord to fit and it will have the correct configuration.
I'm going to give that a try.  It's less work than changing out the chassis
receptacle.

Personally, I don't have any objection to fitting a standard IEC
socket if it fits in most circumstances.  I would not do that for
my HP 9100B though.

 Paul

On Tue, Jan 02, 2024 at 09:45:10AM -0700, John Griessen wrote:
On 1/2/24 09:36, 搁别苍é别 wrote:
Remember to Verify Hot and Neutral as they may be reversed...
I just upgrade any I use to IEC connector with a little drilling and filing...

--
Paul Amaranth, GCIH             | Manchester MI, USA
Aurora Group of Michigan, LLC   |   Security, Systems & Software
paul@...              |   Unix/Linux - We don't do windows









 

On Tue, Jan 2, 2024 at 05:14 PM, n4buq wrote:
How would that work? The Belden uses round pins/sockets whereas the IEC uses flat pins/sockets.

Thanks,
Barry - N4BUQ

I did run across a post from Dale Cook where he says you can often shave
down a standard IEC cord to fit and it will have the correct configuration.
I'm going to give that a try. It's less work than changing out the chassis
receptacle.

Personally, I don't have any objection to fitting a standard IEC
socket if it fits in most circumstances. I would not do that for
my HP 9100B though.

Paul

On Tue, Jan 02, 2024 at 09:45:10AM -0700, John Griessen wrote:
On 1/2/24 09:36, 搁别苍é别 wrote:
Remember to Verify Hot and Neutral as they may be reversed...
I just upgrade any I use to IEC connector with a little drilling and filing...
--
Paul Amaranth, GCIH | Manchester MI, USA
Aurora Group of Michigan, LLC | Security, Systems & Software
paul@... | Unix/Linux - We don't do windows
Don't do this, this vandalized IEC cord that came with a 101A I bought a few years ago, the seller did show it powered up.


For my collection I prefer to keep the original sockets, others IMO ruin them with cheap IEC C14 sockets.

Another option is the smaller IEC C6, but that has a limitation of 2.5A, some cords are of poor quality too.

And there is a 3DP housing that some are using.

David


 

Am 02.01.2024 um 17:45 schrieb John Griessen:
I just upgrade any I use to IEC connector with a little drilling and filing...
IEC-C6 (Mickey mouse connector) fits just fine with a small adapter plate (the oval connectors have a wider spacing of the mounting holes)

Bernd


 

I just tried this, and not well. Probably works well enough to test something
if you're in a bind, but doesn't look good as a permanent solution.

The other solution is to get some socket pins and mold a new plug around
them with a urethane rubber. There's also a 3d stl file floating around somewhere
that you print that will work. Looks a bit clunky, but it's effective. Oh, here
it is:


Paul

On Tue, Jan 02, 2024 at 12:14:08PM -0500, n4buq wrote:
How would that work? The Belden uses round pins/sockets whereas the IEC uses flat pins/sockets.

Thanks,
Barry - N4BUQ

I did run across a post from Dale Cook where he says you can often shave
down a standard IEC cord to fit and it will have the correct configuration.
I'm going to give that a try. It's less work than changing out the chassis
receptacle.
--
Paul Amaranth, GCIH | Manchester MI, USA
Aurora Group of Michigan, LLC | Security, Systems & Software
paul@... | Unix/Linux - We don't do windows


 

On 1/2/24 09:57, Paul Amaranth wrote:
I did run across a post from Dale Cook where he says you can often shave
down a standard IEC cord to fit and it will have the correct configuration.
Oh, that does sound good for a historic instrument!


 

On 1/2/24 09:57, Paul Amaranth wrote:
I did run across a post from Dale Cook where he says you can often shave
down a standard IEC cord to fit and it will have the correct configuration.
On 1/2/24 11:08, Paul Amaranth wrote:
I just tried this, and not well.
Oh well, square hole, round peg...
Back to filing and drilling.

"It was fun while it lasted...
Man, we really got blasted..."
Doug Sahm


 

On 1/2/24 13:26, John Griessen wrote:
On 1/2/24 09:57, Paul Amaranth wrote:
> I did run across a post from Dale Cook where he says you can often shave
> down a standard IEC cord to fit and it will have the correct
configuration.
On 1/2/24 11:08, Paul Amaranth wrote:
I just tried this, and not well.
Oh well, square hole, round peg...
Back to filing and drilling.
Are people really having such a difficult time finding the proper cables? They do show up from time to time. I've never had much trouble getting them when needed. It sure beats all this hacking about.

-Dave

--
Dave McGuire, AK4HZ
New Kensington, PA


 

Well, not to appear self serving (because its not a big deal to me) but I have some originals on eBay from my multiyear collection stash and I just dont need that many anymore. So I know there are some out there, some are mine...? Personally, I have looked at hacking an IEC socket into gear, but mechanically there is sometimes no room to retrofit. And there is "keeping things original" but I often go for practicality instead. Happy New Year all! J. Kruth?


 

On Tue, Jan 02, 2024 at 01:32:46PM -0500, Dave McGuire wrote:
Are people really having such a difficult time finding the proper cables?
They do show up from time to time. I've never had much trouble getting them
when needed. It sure beats all this hacking about.

-Dave
I scour the bins at hamfests and have come up empty for the last couple of years.
They seem to be getting a bit harder to find as fewer people have interest in
that vintage of equipment.

Paul


--
Paul Amaranth, GCIH | Manchester MI, USA
Aurora Group of Michigan, LLC | Security, Systems & Software
paul@... | Unix/Linux - We don't do windows


 

I also convert any item I come across to IEC - it's a character building exercise in some cases! I keep one oval connector power cord just for testing. Down here in Australia they are REALLY hard to find.


 

When I got some old Ludlum rad gear that used these oval cords with reversed hot and neutrals, I bought some newer oval cords and cut then reversed the hot and neutral wires, soldered back together and used nice amounts of heat shrink to insulate.? That works quite well.

On Tue, Jan 2, 2024 at 12:32?PM Dave McGuire <mcguire@...> wrote:
On 1/2/24 13:26, John Griessen wrote:
> On 1/2/24 09:57, Paul Amaranth wrote:
>? > I did run across a post from Dale Cook where he says you can often shave
>? > down a standard IEC cord to fit and it will have the correct
> configuration.
>
> On 1/2/24 11:08, Paul Amaranth wrote:
>> I just tried this, and not well.
>
> Oh well, square hole, round peg...
> Back to filing and drilling.

? ?Are people really having such a difficult time finding the proper
cables?? They do show up from time to time.? I've never had much trouble
getting them when needed.? It sure beats all this hacking about.

? ? ? ? ? ?-Dave

--
Dave McGuire, AK4HZ
New Kensington, PA







 

Greetings,

I may have some of these power cords.

Do I correctly remember that there were two different wiring relationships between the male plug and the female socket?

I’m thinking I would like $10.00/ea plus postage.

Shall I look and see what I have in storage?

Regards,

Ken

On Jan 2, 2024, at 11:32 AM, Dave McGuire <mcguire@...> wrote:

On 1/2/24 13:26, John Griessen wrote:
On 1/2/24 09:57, Paul Amaranth wrote:
I did run across a post from Dale Cook where he says you can often shave
down a standard IEC cord to fit and it will have the correct configuration.
On 1/2/24 11:08, Paul Amaranth wrote:
I just tried this, and not well.
Oh well, square hole, round peg...
Back to filing and drilling.
Are people really having such a difficult time finding the proper cables? They do show up from time to time. I've never had much trouble getting them when needed. It sure beats all this hacking about.

-Dave

--
Dave McGuire, AK4HZ
New Kensington, PA






 

Hello and happy new year to the group.
I have a number of older HP test gear that has the small 3 pin cords and also have the correct cords. What I am seeing is the typical 40 year plus plastic/rubber degradation setting in.
When buying cords ask the seller the condition of the cord. You may not be happy with what you receive.
As far as changing things out it really is quite the pain. Maybe after you do a few and are committed to the effort it gets easier.
Suspect one way or another I will become an expert. Not to excited.
Regards
Paul
WB8TSL


 

On Tuesday 02 January 2024 01:32:46 pm Dave McGuire wrote:
On 1/2/24 13:26, John Griessen wrote:
On 1/2/24 09:57, Paul Amaranth wrote:
> I did run across a post from Dale Cook where he says you can often shave
> down a standard IEC cord to fit and it will have the correct
configuration.

On 1/2/24 11:08, Paul Amaranth wrote:
I just tried this, and not well.
Oh well, square hole, round peg...
Back to filing and drilling.
Are people really having such a difficult time finding the proper
cables? They do show up from time to time. I've never had much trouble
getting them when needed. It sure beats all this hacking about.
I know that I haven't seen them around for a good long time. OTOH I have a big box of the more standard ones around here, including a few variations in color, some right angle, etc. I *may* have one of those older style ones somewhere, I'm not sure. I am sure that I don't have anything here that uses them. Some time back I had a guy who was looking for one, offered me $40 for one that I had, and I sent it off to him. That one might have been for a music synthesizer, I'm not sure any more.

The two configurations of those is bothersome as well.

--
Member of the toughest, meanest, deadliest, most unrelenting -- and
ablest -- form of life in this section of space, ?a critter that can
be killed but can't be tamed. ?--Robert A. Heinlein, "The Puppet Masters"
-
Information is more dangerous than cannon to a society ruled by lies. --James
M Dakin


 

If you have the power cords with reversed hot/neutral that were commonplace for use on Friden calculators simply cut off the AC plug end and install a new one wired in reverse.? I seriously doubt if anyone will take the time to disassemble the cord and look for wire color errors in regards to the modification.

?

Simplicity at its best.

?

Way back when the word was starting to circulate that Belden was going to discontinue manufacturer of these cords I made a quantity buy.? And at that time the amount of HP and other equipment that was coming onto the surplus market was rife with these style power receptacles. Over the 45 years or so I have slowly eaten up the supply and now have only a couple left.? But the ~$6 per cord at that time was easy on the pocketbook.

?

Use of a modified IEC power cord is rather Draconian given the mis-fit of the round versus flat contacts.? Brute force when mating such an arrangement will most probably result in damage to the contacts or even break them away from their mounting inside the equipment receptacle.

?

Greg