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HP Forums › HP Museum Forums › Old HP Forum Archives v
HP71B mains adaptor

Linear Mode
HP71B mains adaptor


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P.Hart Offline
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Posts: 21
Threads: 4
Joined: Oct 2007
#2
09-05-2009, 10:54 AM

At the back of my HP71B are two sockets for HPIL connectors and another which I presume is for a mains adaptor. Can anyone please inform me what the specification would be for an adaptor?

P.Hart

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▼
Garth Wilson Offline
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Posts: 887
Threads: 9
Joined: Jul 2007
#3
09-05-2009, 01:27 PM

In the U.S. it's HP number 82059D, the same one that goes to the 82161A tape drive, the thinkjet printer, the 82169A HPIL-to-HPIB converter, and other things. Output is 8VAC.

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P.Hart Offline
Unregistered
Posts: 21
Threads: 4
Joined: Oct 2007
#4
09-05-2009, 02:40 PM

Thanks Garth. I doubt I could get the HP part. I'm hoping to find out the full spec for an adaptor that I could find elsewhere.

P.

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▼
Katie Wasserman Offline
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Posts: 1,477
Threads: 71
Joined: Jan 2005
#5
09-05-2009, 03:38 PM

It's just a transformer, no regulation or rectification at all. Output is rated 8 VAC at 3VA, I measured 12.5 V RMS with no load.

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P.Hart Offline
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Posts: 21
Threads: 4
Joined: Oct 2007
#6
09-05-2009, 05:01 PM

Thanks Katie, I should be able to find something to that spec.

P.Hart

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Garth Wilson Offline
Unregistered
Posts: 887
Threads: 9
Joined: Jul 2007
#7
09-06-2009, 12:48 AM

I was trying to think of a way you could substitute something; but I have never seen that plug outside of the HP equipment. You might have to more-or-less custom-make it, possibly with some Molex pin sockets.

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