Groups > alt.folklore.computers > #154181

Re: HP split into two

From	hankvc@blackhole.lostwells.org (Hank)
Newsgroups	alt.folklore.computers
Subject	Re: HP split into two
Date	2015-11-08 18:03 +0000
Organization	East of the Sun, West of the Moon
Message-ID	<n1o2on$6kk$1@dont-email.me> (permalink)
References	<n1e44d$r1e$1@reader1.panix.com> <20151105140806.3f09ee42a41bae33dc1b7668@eircom.net> <alpine.LNX.2.02.1511051259330.15812@darkstar.example.org> <n1g7uu$69m$1@dont-email.me>

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gareth <no.spam@thank.you.invalid> wrote:
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>Newsgroups: alt.folklore.computers
>Subject: Re: HP split into two
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>"Michael Black" <et472@ncf.ca> wrote in message 
>news:alpine.LNX.2.02.1511051259330.15812@darkstar.example.org...
>>>
>> I have an HP-410B VTVM, still works fine and very useful since it can 
>> properly measure RF voltages.  I wouldn't use it most of the time, but 
>> it's really good to have around.
>
>One thing that I regret giving away 30 years ago, because I did not
>understand what it was, was a very high impedance HP voltmeter
>that had the rotating butterfly to transfer a minimal amount of charge from 
>the
>input onto the measuring circuit.
>
That sounds like an HP 412A chopper-stabilized DC VTVM.  Very nice
instrument to have, and very accurate (I wouldn't want to part with the
one I keep here).

Conversely, the 400 AC voltmeters are bears to get working properly,
while a Ballantine 300 is pretty trouble-free.
I've spent hours smoking out bad grounds and other problems on these.
And while a 200CD oscillator is a good instrument to have, they develop
their share of problems that require some skill to troubleshoot.  

Hank

Thread

HP split into two jgk@panix.com (Joe keane) - 2015-11-04 23:25 +0000
  Re: HP split into two Michael Black <et472@ncf.ca> - 2015-11-04 18:36 -0500
    Re: HP split into two Dan Espen <despen@verizon.net> - 2015-11-04 22:58 -0500
      Re: HP split into two philo <philo@privacy.net> - 2015-11-05 05:16 -0600
        Re: HP split into two David Hume <David.Hume@example.com> - 2015-11-05 11:28 +0000
          Re: HP split into two Stephen Wolstenholme <steve@easynn.com> - 2015-11-05 11:44 +0000
            Re: HP split into two David Hume <David.Hume@example.com> - 2015-11-05 11:52 +0000
            Re: HP split into two Quadibloc <jsavard@ecn.ab.ca> - 2015-11-06 09:40 -0800
          Re: HP split into two scott@slp53.sl.home (Scott Lurndal) - 2015-11-05 14:15 +0000
            Re: HP split into two Uncle Steve <stevet810@gmail.com> - 2015-11-15 07:48 -0500
        Re: HP split into two "Osmium" <r124c4u102@comcast.net> - 2015-11-05 07:37 -0600
          Re: HP split into two "gareth" <no.spam@thank.you.invalid> - 2015-11-05 13:50 +0000
          Re: HP split into two Roberto Waltman <usenet@rwaltman.com> - 2015-11-05 20:47 -0500
        Re: HP split into two Ahem A Rivet's Shot <steveo@eircom.net> - 2015-11-05 14:08 +0000
          Re: HP split into two Michael Black <et472@ncf.ca> - 2015-11-05 13:00 -0500
            Re: HP split into two "gareth" <no.spam@thank.you.invalid> - 2015-11-05 18:44 +0000
              Re: HP split into two hankvc@blackhole.lostwells.org (Hank) - 2015-11-08 18:03 +0000
          Re: HP split into two Bob Eager <news0005@eager.cx> - 2015-11-05 21:16 +0000
            Re: HP split into two Stan Barr <plan.b@bluesomatic.org> - 2015-11-06 08:02 +0000
              Re: HP split into two Bob Eager <news0005@eager.cx> - 2015-11-06 09:20 +0000
                Re: HP split into two Stephen Wolstenholme <steve@easynn.com> - 2015-11-06 09:53 +0000
                Re: HP split into two Bob Eager <news0005@eager.cx> - 2015-11-06 11:58 +0000
                Re: HP split into two Stan Barr <plan.b@bluesomatic.org> - 2015-11-06 15:19 +0000
                Re: HP split into two Bob Eager <news0005@eager.cx> - 2015-11-06 19:30 +0000
                Re: HP split into two Michael Black <et472@ncf.ca> - 2015-11-06 15:54 -0500
                Re: HP split into two Bob Eager <news0005@eager.cx> - 2015-11-06 23:02 +0000
                Re: HP split into two Huge <Huge@nowhere.much.invalid> - 2015-11-07 10:35 +0000
                Re: HP split into two jmfbahciv <See.above@aol.com> - 2015-11-07 13:45 +0000
                Re: HP split into two Bob Eager <news0005@eager.cx> - 2015-11-07 13:59 +0000
                Re: HP split into two jmfbahciv <See.above@aol.com> - 2015-11-08 13:46 +0000
          Re: HP split into two Andrew Swallow <am.swallow@btinternet.com> - 2015-11-05 21:19 +0000
            Re: HP split into two Ahem A Rivet's Shot <steveo@eircom.net> - 2015-11-06 10:16 +0000
              Re: HP split into two Charlie Gibbs <cgibbs@kltpzyxm.invalid> - 2015-11-06 17:22 +0000
                Re: HP split into two Walter Bushell <proto@panix.com> - 2015-11-11 13:01 -0500
              Re: HP split into two Walter Bushell <proto@panix.com> - 2015-11-11 12:58 -0500
            Re: HP split into two Walter Bushell <proto@panix.com> - 2015-11-11 12:57 -0500
              Re: HP split into two Andrew Swallow <am.swallow@btinternet.com> - 2015-11-12 00:57 +0000
                Re: HP split into two Michael Black <et472@ncf.ca> - 2015-11-11 23:33 -0500
                Re: HP split into two Andrew Swallow <am.swallow@btinternet.com> - 2015-11-12 13:49 +0000
                Re: HP split into two Joe Pfeiffer <pfeiffer@cs.nmsu.edu> - 2015-11-12 10:55 -0700
                Re: HP split into two hancock4@bbs.cpcn.com - 2015-11-13 09:45 -0800
                Re: HP split into two Michael Black <et472@ncf.ca> - 2015-11-13 12:58 -0500
                Re: HP split into two Ahem A Rivet's Shot <steveo@eircom.net> - 2015-11-14 06:20 +0000
        Re: HP split into two Walter Bushell <proto@panix.com> - 2015-11-11 12:50 -0500

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