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Jesse Lackey | 1 Jul 2010 01:49

[EE]: Test lead panel mount holder with fuse...? HP 3478A meter

Hi all,

I'm looking for a spare part... not sure what it is called, which is 
making it hard.

It is a fuseholder designed to have probes plugged into it, and is 
removable from the gear.  The fuse is for protection for measuring current.

I have three of these HP 3478A meters (all from ebay) and one of them 
does not have this fuseholder, and this was not specified by the seller 
nor visible in the picture they provided.  Unfortunately I should have 
been on top of it when bought (a year and a half ago) but I put it aside 
instead.

Now I'd like to find this missing part and get it running properly.  It 
works fine with a fuse holder from one of the other 3478As I've got.

In this picture, it is the lower right connector, "3A/250V fuse".  It is 
spring-loaded, in that you can turn it with a large screwdriver and it 
pops out with the fuse.

<http://cgi.ebay.com/ws/eBayISAPI.dll?VISuperSize&item=280327145408>

Anybody know where I could get one, or even the standard industry name 
for such a connector?  I figure they are relatively common, but I 
haven't been able to figure it out.

Any help appreciated.
Thanks,
J
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Jonathan Hallameyer | 1 Jul 2010 02:04
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Re: [EE] Exploding light bulb

On Wed, Jun 30, 2010 at 6:21 AM, RussellMc <apptechnz@...> wrote:

> > We banished CFLs from Kitchen and dinning room as they are too dim.
>
> Nonsense !!! :-)
> I have a  100 Watt CFL in my  dining room and it is nicely bright.
> Mind you, that's a 100 Watt CFL, not a "100 Watt equivalent" :-).
>
> Briiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiiight !!! :-)
>
> I like the local home depot, they have a 1000W fluorescent lamp,  I
wouldn't venture to call it compact :o), but i saw it and though "1000w
equivalent, right?"  nope, 1kW power.

I had a strong urge to get one, but unfortunately I'd have no use for such a
monster.   Though I'm sure even the small percentage of UV which gets out of
could still give me a decent tan :o)

-Jon
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peter green | 1 Jul 2010 03:00

Re: [EE]: Test lead panel mount holder with fuse...? HP 3478A meter

Jesse Lackey wrote:
> Hi all,
>
> I'm looking for a spare part... not sure what it is called, which is 
> making it hard.
>
> It is a fuseholder designed to have probes plugged into it, and is 
> removable from the gear.  The fuse is for protection for measuring current.
>
> I have three of these HP 3478A meters (all from ebay) and one of them 
> does not have this fuseholder, and this was not specified by the seller 
> nor visible in the picture they provided.  Unfortunately I should have 
> been on top of it when bought (a year and a half ago) but I put it aside 
> instead.
>
> Now I'd like to find this missing part and get it running properly.  It 
> works fine with a fuse holder from one of the other 3478As I've got.
>
> In this picture, it is the lower right connector, "3A/250V fuse".  It is 
> spring-loaded, in that you can turn it with a large screwdriver and it 
> pops out with the fuse.
>
> <http://cgi.ebay.com/ws/eBayISAPI.dll?VISuperSize&item=280327145408>
>
> Anybody know where I could get one, or even the standard industry name 
> for such a connector?  
Assuming i'm reading it correctly. The service manual ( 
http://manoman.sqhill.com/pdf/hp-3478a.pdf page 5-7 pdf page 67) 
mentions a JACK ASSY-FUSED and says it is made by HP with part number 
5061-1163 with designation FC-101 and figure 5-1 (pdf page 69) marks the
(Continue reading)

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Xiaofan Chen | 1 Jul 2010 04:11
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Re: [EE]: Test lead panel mount holder with fuse...? HP 3478A meter

On Thu, Jul 1, 2010 at 9:00 AM, peter green <plugwash@...> wrote:
> I suspect like ordinary panel mount fuseholders the holder and carrier
> were designed as a pair and not compatible across brands.
>
> You could try calling agilent to see if they have any old stock, failing
> that you will probablly have to hack in a new connector and seperate
> fuseholder somehow.
>

We lost one of the rear fuse-holder of the Agilent benchtop DMM,
the only way to get it is to bug the Agilent sales guy and finally
got one from them. We bought a lot of their equipment
(8000/9000 scopes, LA, spectrum analyzers, DC power supplies,
etc).

-- 
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Jesse Lackey | 1 Jul 2010 04:30

Re: [EE]: Test lead panel mount holder with fuse...? HP 3478A meter

Hi - thanks, that is exactly what it is.

I guess a hack is in order.  I suppose this is the downside of getting 
late-80s mfgr gear.  I'm sure it will be unavailable or at least not 
worth the expense and hassle of finding one of them from god knows where.

Cheers,
J

peter green wrote:
> Assuming i'm reading it correctly. The service manual (
> http://manoman.sqhill.com/pdf/hp-3478a.pdf page 5-7 pdf page 67)
> mentions a JACK ASSY-FUSED and says it is made by HP with part number
> 5061-1163 with designation FC-101 and figure 5-1 (pdf page 69) marks the
> fuseholder socket as FC101. At least according to thier website agilent
> no longer sell spare parts.
>
> I suspect like ordinary panel mount fuseholders the holder and carrier
> were designed as a pair and not compatible across brands.
>
> You could try calling agilent to see if they have any old stock, failing
> that you will probablly have to hack in a new connector and seperate
> fuseholder somehow.
>
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Marcel Duchamp | 1 Jul 2010 04:40
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Favicon

Re: [EE]: Test lead panel mount holder with fuse...? HP 3478A meter

Yup.

But... on the other hand, you have one of the finest DMMs you can get.

Based on a recommendation from Jim Williams, I bought an HP3455 DMM. 
Amazing specs.  What a deal at $95 or so...  oh, the golden age of ebay.

On 6/30/2010 7:30 PM, Jesse Lackey wrote:
> Hi - thanks, that is exactly what it is.
>
> I guess a hack is in order.  I suppose this is the downside of getting
> late-80s mfgr gear.  I'm sure it will be unavailable or at least not
> worth the expense and hassle of finding one of them from god knows where.
>
> Cheers,
> J
>
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Jesse Lackey | 1 Jul 2010 05:47

Re: [EE]: Test lead panel mount holder with fuse...? HP 3478A meter

Hi - yes it is indeed a bit of a marvelous phase, where topnotch, $2000 
in 1988 stuff can be had for a dime or a nickel on the dollar, and 
largely works as well now as it did then.  New gear in the kilobucks 
realm, while significantly better, is off in a land of precision and 
performance I doubt I'll ever need.  Scopes may be an exception, but a 
$1K tek TDS 220 (from ebay) has served me well for 7 years and counting.

It could hardly be cheaper than right now to get a lab of good equip for 
most any type of design work.  It just doesn't cost that much for what 
will serve 99% of designs.  Of course, if you do RF design, you're off 
in a different world...

Cheers
J

Marcel Duchamp wrote:
> Yup.
>
> But... on the other hand, you have one of the finest DMMs you can get.
>
> Based on a recommendation from Jim Williams, I bought an HP3455 DMM.
> Amazing specs.  What a deal at $95 or so...  oh, the golden age of ebay.
>
>
>
> On 6/30/2010 7:30 PM, Jesse Lackey wrote:
>> Hi - thanks, that is exactly what it is.
>>
>> I guess a hack is in order.  I suppose this is the downside of getting
>> late-80s mfgr gear.  I'm sure it will be unavailable or at least not
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Sean Breheny | 1 Jul 2010 06:51
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Favicon

Re: [EE]: Test lead panel mount holder with fuse...? HP 3478A meter

Have you tried finding a parts unit on eBay? Someone who sells a lot
of them may even have a parts unit lying there and be willing to sell
you the fuseholder out of it for a fraction of the total cost (and
shipping).

Sean

On Wed, Jun 30, 2010 at 10:30 PM, Jesse Lackey
<jsl-ml@...> wrote:
> Hi - thanks, that is exactly what it is.
>
> I guess a hack is in order.  I suppose this is the downside of getting
> late-80s mfgr gear.  I'm sure it will be unavailable or at least not
> worth the expense and hassle of finding one of them from god knows where.
>
> Cheers,
> J
>
>
> peter green wrote:
>> Assuming i'm reading it correctly. The service manual (
>> http://manoman.sqhill.com/pdf/hp-3478a.pdf page 5-7 pdf page 67)
>> mentions a JACK ASSY-FUSED and says it is made by HP with part number
>> 5061-1163 with designation FC-101 and figure 5-1 (pdf page 69) marks the
>> fuseholder socket as FC101. At least according to thier website agilent
>> no longer sell spare parts.
>>
>> I suspect like ordinary panel mount fuseholders the holder and carrier
>> were designed as a pair and not compatible across brands.
>>
(Continue reading)

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Sean Breheny | 1 Jul 2010 06:56
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Favicon

Re: [EE]: Test lead panel mount holder with fuse...? HP 3478A meter

I've been stocking up on test equipment lately and I have been able to
get quite a bit of good RF stuff fairly cheaply. I've bought several
1GHz signal generators for $300 or so and a very clean, fully working,
late 1980s spectrum analyzer (Tek 492BP, kHz to 21GHz) with 30-day
guarantee for $2700. I also bought a mid-1990s Tek DSO (TDS320 I
think), about 2 years ago, which was in immaculate condition, only
power cycled something like 20 times according to the internal log,
with original probes and manuals, and with communications module
built-in, for $350. I ended up selling it again because I had bought
two scopes with the intent of keeping the better one and selling the
other once I had evaluated them.

I've also saved my company a good deal of money by buying test
equipment on eBay.

There are definitely still good deals to be had on eBay.

Sean

On Wed, Jun 30, 2010 at 11:47 PM, Jesse Lackey
<jsl-ml@...> wrote:
> Hi - yes it is indeed a bit of a marvelous phase, where topnotch, $2000
> in 1988 stuff can be had for a dime or a nickel on the dollar, and
> largely works as well now as it did then.  New gear in the kilobucks
> realm, while significantly better, is off in a land of precision and
> performance I doubt I'll ever need.  Scopes may be an exception, but a
> $1K tek TDS 220 (from ebay) has served me well for 7 years and counting.
>
> It could hardly be cheaper than right now to get a lab of good equip for
> most any type of design work.  It just doesn't cost that much for what
(Continue reading)

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ivp | 1 Jul 2010 07:30
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Re: [EE] Exploding light bulb

>> I like the local home depot, they have a 1000W fluorescent lamp
> 
> I had a strong urge to get one, but unfortunately I'd have no use
> for such a monster.   Though I'm sure even the small percentage
> of UV which gets out of could still give me a decent tan :o)

And I'd imagine very few ships would wreck on your house on
foggy nights
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Gmane