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 Post subject: HP 651B AC Cord Quest!
PostPosted: Sep Mon 06, 2004 5:03 am 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 420
Location: Winnipeg, Manitoba, CANADA
I have just acquired an HP 651B oscillator, and need the AC cord. I was told Belden make this strange-looking cord, but no part number was given to me. Also, I was warned that the Belden price would have me wimpering. Does anyone know the Belden number? Is there a 'generic' replacement? Any help is greatly appreciated.<P>------------------<BR>


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 Post subject: HP 651B AC Cord Quest!
PostPosted: Sep Mon 06, 2004 5:11 am 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 2219
Location: Harviell MO USA 63945 (12 miles S of Poplar Bluff)
Jeez, the newer hp equipment of that era should have already switched over to the NEMA cord as used on all our modern personal computers. You could always replace the older hp "round" connector with the NEMA connector with a little Dremel tool work.<P>Dean<P>------------------<BR>


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 Post subject: HP 651B AC Cord Quest!
PostPosted: Sep Mon 06, 2004 5:38 am 
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Joined: Jan Thu 01, 1970 1:00 am
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Location: Winnipeg, Manitoba, CANADA
Ouch!<P>------------------<BR>


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 Post subject: HP 651B AC Cord Quest!
PostPosted: Sep Mon 06, 2004 7:03 am 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 410
Location: Tokyo, Japan (2006~)
Randy;<P>I just saw an HP 651B on eBay and it had a power cord receptacle like this >> <A HREF="http://images.channeladvisor.com/Sell/SSProfiles/30060762/Images/HP_651B_1230A09080-2.jpg" TARGET=_blank>http://images.channeladvisor.com/Sell/SSProfiles/30060762/Images/HP_651B_1230A09080-2.jpg</A> <P>Is this what you got? If so, looks like a regular HP cord to me... If yours is oval with three contcts kinda similar to the one above, I think I got one you can have...<P>Chris <P>------------------<BR>


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 Post subject: HP 651B AC Cord Quest!
PostPosted: Sep Mon 06, 2004 6:16 pm 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 420
Location: Winnipeg, Manitoba, CANADA
Well, that is exactly the oscillator I have. Unfortunately, that ain't the AC connection I have at all. Darn. That looks original, too, because I see the NEMA connector is centered nicely and rivited in. Mine is the real odd (at least to me) looking oval with all three pins in a straight line. The center pin is the ground. The overall size is a lot smaller. If I had a digital camera, I'd surely show you what I meant. Supposedly it was a common cord years ago (before NEMA?), but I sure don't remember it. <P>------------------<BR>


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 Post subject: HP 651B AC Cord Quest!
PostPosted: Sep Mon 06, 2004 7:40 pm 
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Location: Maryland 20709, USA
Hi Randy,<P>Does yours look like this:<P> <IMG SRC="http://antiqueradios.com/albums/Misc/HPCordQ.jpg"> <P>This is the style that HP used before the NEMA standard was adopted. You can find the cords at (real) office supply stores. They were commonly used on office machines.<P>Alpha still has them in the catalog under p/n 543. I can't find my Belden catalog (somebody probably ate it <IMG SRC="http://antiqueradios.com/forums/eek.gif"> )<P>------------------<BR>73 de Leigh W3NLB | | Leigh@AtwaterKent.Info<BR><A HREF="http://www.AtwaterKent.info" TARGET=_blank>http://www.AtwaterKent.info</A> | | <A HREF="http://www.Synchrophase.info" TARGET=_blank>http://www.Synchrophase.info</A>


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 Post subject: HP 651B AC Cord Quest!
PostPosted: Sep Mon 06, 2004 7:59 pm 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 1616
Location: Burbank, CA and Thailand
Leigh, I too wondered if it might be that type, though I couldn't think of a way to describe it. I've always thought of them as "Dolby cords" because the early Dolby Type A units used them.<P>Randy if that's it and you can't find one, let me know. I've got one or two kicking around.<P>------------------


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 Post subject: HP 651B AC Cord Quest!
PostPosted: Sep Mon 06, 2004 8:09 pm 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 410
Location: Tokyo, Japan (2006~)
Hey Lizard;<P>If its this >> <IMG SRC="http://img.photobucket.com/albums/v297/angusx/DSC00808.jpg"> and >> <IMG SRC="http://img.photobucket.com/albums/v297/angusx/DSC00810.jpg"> <P>then I got one like this you can have >> <IMG SRC="http://img.photobucket.com/albums/v297/angusx/DSC00811.jpg"> <P>The cord portion is about 15.5" so you need to splice on an extention or put a 3-prong plug on the end of it. If you want it, email me your snail mail addy so I can send it to ya.<P>Chris<P>------------------<BR>


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 Post subject: HP 651B AC Cord Quest!
PostPosted: Sep Mon 06, 2004 8:11 pm 
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Leigh wrote:
<font>quote:</font><HR>Originally posted by DavidK:<BR><B>...I've always thought of them as "Dolby cords"...</B><HR>
<P>Hi David,<P>This was the standard removable AC line cord in the US before the NEMA standard came out. But I just noticed that Randy is in Canada. This style may not have been common there.<P>------------------<BR>73 de Leigh W3NLB | | Leigh@AtwaterKent.Info<BR><A HREF="http://www.AtwaterKent.info" TARGET=_blank>http://www.AtwaterKent.info</A> | | <A HREF="http://www.Synchrophase.info" TARGET=_blank>http://www.Synchrophase.info</A>


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 Post subject: HP 651B AC Cord Quest!
PostPosted: Sep Mon 06, 2004 10:00 pm 
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Joined: Jan Thu 01, 1970 1:00 am
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Location: Winnipeg, Manitoba, CANADA
One more reason to wish I was in the US of A. Damn it, that is the cord, Leigh. I rigged up a cheater cord, just to see if the oscillator worked. It does work fine, so now the hunt is on for a real cord. I know I'll find it. there are actually two Swap Meets coming up in the next few weeks, so I am already starting to stash extra change I find in the couch cushions away for just this purpose. I will find it, and now I have at least an Alpha number. Thank you kindly, once again, Leigh.<P>------------------<BR>


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 Post subject: HP 651B AC Cord Quest!
PostPosted: Sep Mon 06, 2004 10:40 pm 
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Location: Maryland 20709, USA
Hi Randy,<P>You're welcome <IMG SRC="http://antiqueradios.com/forums/biggrin.gif"> Here's a link to the catalog page on the Alpha website <A HREF="http://alphawire.com/pages/296.cfm?partner=0∂=0" TARGET=_blank>http://alphawire.com/pages/296.cfm?partner=0∂=0</A> which shows the cable at the top of the page. <P>If you can't find one of these locally, Alpha has a Distributor Inventory Search function available through the search box at the top of every page. Enter 543 in the empty box and select US or Canadian Distributor Inventory Search from the pull-down. I think the price is around $7 US.<P>I checked the Belden catalog (found it!) and their website, and they've apparently discontinued the removable power cord product line <IMG SRC="http://antiqueradios.com/forums/frown.gif"><P>------------------<BR>73 de Leigh W3NLB | | Leigh@AtwaterKent.Info<BR><A HREF="http://www.AtwaterKent.info" TARGET=_blank>http://www.AtwaterKent.info</A> | | <A HREF="http://www.Synchrophase.info" TARGET=_blank>http://www.Synchrophase.info</A>


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 Post subject: HP 651B AC Cord Quest!
PostPosted: Sep Mon 06, 2004 11:02 pm 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 1616
Location: Burbank, CA and Thailand
Randy, no need to pull your hair out. Two forum members offered to send you one for free! (What else are we gonna do - will them to our heirs?)<P>Leigh, if you say this style used to be standard on office equipment I believe you, but I had only seen them on Dolby gear. Maybe it's because (thank God) I never worked in an office. <IMG SRC="http://antiqueradios.com/forums/biggrin.gif"><P>------------------


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 Post subject: HP 651B AC Cord Quest!
PostPosted: Sep Tue 07, 2004 1:46 am 
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Hi David,<P>This style was used on old adding machines and such items. It was a defacto standard, but I don't know it if was ever formalized.<P>------------------<BR>73 de Leigh W3NLB | | Leigh@AtwaterKent.Info<BR><A HREF="http://www.AtwaterKent.info" TARGET=_blank>http://www.AtwaterKent.info</A> | | <A HREF="http://www.Synchrophase.info" TARGET=_blank>http://www.Synchrophase.info</A>


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 Post subject: HP 651B AC Cord Quest!
PostPosted: Sep Tue 07, 2004 2:03 am 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 410
Location: Tokyo, Japan (2006~)
I have a bunch of older HP instruments as well as some military equipment that use this type. I think the new style HP cords were basically developed based on this...<P>When you compare the new NEMA to this old style, it clearly shows its lineage...<BR> <IMG SRC="http://img.photobucket.com/albums/v297/angusx/990.gif"> <P>------------------<BR>


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 Post subject: HP 651B AC Cord Quest!
PostPosted: Sep Sat 11, 2004 10:03 am 
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Joined: Jan Thu 01, 1970 1:00 am
Posts: 2219
Location: Harviell MO USA 63945 (12 miles S of Poplar Bluff)
Watch out for the "office machine" cords often used on adding machines. Although the female end may appear to be the same, the center ground/earth pin may not be connected and there'll be a 2-wire male plug on the other end. Your oscillator won't have a safety earth ground.<P>Usually when manufacturers diddled with their destination power supply requirements, the female end of the cord stayed the same and they just supplied a different cord with an alternate male connector.<P>Dean<P>------------------<BR>


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