Today's Message Index:
----------------------
1. 03:53 PM - Fuse Blocks (Art Zemon)
2. 04:36 PM - Re: Fuse Blocks (John Ciolino)
3. 04:51 PM - Re: Fuse Blocks (Kent or Jackie Ashton)
4. 04:58 PM - Re: Fuse Blocks (Art Zemon)
5. 05:17 PM - Re: Fuse Blocks (Ron Burnett)
6. 05:34 PM - Re: 1.57542 GHz Filter (Alec Myers)
7. 08:33 PM - Re: 2 AWG crimping tool (wesk)
8. 09:32 PM - Re: Fuse Blocks (Stuart Hutchison)
9. 11:26 PM - Re: Fuse Blocks (John Tipton)
Message 1
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Folks,
I need to select fuse blocks for my plane, less than 20 circuits. I found
the Littelfuse POWR-BLOCK on Digi-Key
<https://www.digikey.com/products/en/circuit-protection/fuseholders/140?k=fuse+block&k=&pkeyword=fuse+block&pv47=22872&pv2094=i7&FV=ffe0008c&mnonly=0&ColumnSort=0&page=1&quantity=0&ptm=0&fid=0&pageSize=25>
and it looks cool but I have to order a zillion pieces to make a complete
set of stuff that is ready to go into the plane: fuse blocks, interlocks,
mounts, terminals.
Is there an easier way? Something off-the-shelf and maybe available
locally? Or should I carefully get together all of the parts that I need
and order the POWR-BLOCK from Digi-Key.
Thanks,
-- Art Z.
--
https://CheerfulCurmudgeon.com/
*"If I am not for myself, who is for me? And if I am only for myself, what
am I? And if not now, when?" Hillel*
Message 2
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There is something simpler. See www.bandc.aero, look under electrical
supplies/circuit protection devices/fuse blocks. A 20 circuit block
ready to use is $30.
Good luck/
John
Bearhawk Patrol
From: owner-aeroelectric-list-server@matronics.com
[mailto:owner-aeroelectric-list-server@matronics.com] On Behalf Of Art
Zemon
Sent: Saturday, August 05, 2017 6:53 PM
Subject: AeroElectric-List: Fuse Blocks
Folks,
I need to select fuse blocks for my plane, less than 20 circuits. I
found the Littelfuse POWR-BLOCK on Digi-Key
<https://www.digikey.com/products/en/circuit-protection/fuseholders/140?k
=fuse+block&k=&pkeyword=fuse+block&pv47=22872&pv2094=i7&FV=ff
e0008c&mnonly=0&ColumnSort=0&page=1&quantity=0&ptm=0&fid=0&pa
geSize=25> and it looks cool but I have to order a zillion pieces to
make a complete set of stuff that is ready to go into the plane: fuse
blocks, interlocks, mounts, terminals.
Is there an easier way? Something off-the-shelf and maybe available
locally? Or should I carefully get together all of the parts that I need
and order the POWR-BLOCK from Digi-Key.
Thanks,
-- Art Z.
--
https://CheerfulCurmudgeon.com/
"If I am not for myself, who is for me? And if I am only for myself,
what am I? And if not now, when?" Hillel
Message 3
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Something like this can fit right on your panel
http://www.cooperindustries.com/content/public/en/bussmann/transportation/products/power_distribution/fuse_panels/series_15710_rearterminalatcfusepanel.html
Or do a google images search for ATC fuse blocks and youll see many other styles.
Some are available at auto parts stores. I have used the 20 gang version
http://www.ebay.com/itm/NEW-Bussmann-15600-18-20-18-Position-ATC-Fuse-Panel-Block-RV-Trailer-Boat-Solar/272378729318
and also used 12 gang and 8 gang models to set up a main and essential bus.
With the 20 position version, it is also possible to cut the center conductor,
silver soldered a extra tab on the end and made a main/essential bus out set up
out of it.
-Kent
> On Aug 5, 2017, at 6:53 PM, Art Zemon <art@zemon.name> wrote:
>
> Folks,
>
> I need to select fuse blocks for my plane, less than 20 circuits. I found the
Littelfuse POWR-BLOCK on Digi-Key and it looks cool but I have to order a zillion
pieces to make a complete set of stuff that is ready to go into the plane:
fuse blocks, interlocks, mounts, terminals.
>
> Is there an easier way? Something off-the-shelf and maybe available locally?
Or should I carefully get together all of the parts that I need and order the
POWR-BLOCK from Digi-Key.
>
> Thanks,
> -- Art Z.
>
> --
> https://CheerfulCurmudgeon.com/
>
> "If I am not for myself, who is for me? And if I am only for myself, what am
I? And if not now, when?" Hillel
Message 4
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That's exactly what I need! Thanks.
-- Art Z.
Sent from my phone. Please excuse brevity and bizarre typos.
On Aug 5, 2017 6:54 PM, "John Ciolino" <JohnCiolino@carolina.rr.com> wrote:
There is something simpler. See www.bandc.aero, look under electrical
supplies/circuit protection devices/fuse blocks. A 20 circuit block ready
to use is $30.
Good luck/
Message 5
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Art,
I got mine at West Marine.
Ron Burnett
May you have the Lord's blessings today!
Sent from my iPad
> On Aug 5, 2017, at 6:57 PM, Art Zemon <art@zemon.name> wrote:
>
> That's exactly what I need! Thanks.
>
> -- Art Z.
>
> Sent from my phone. Please excuse brevity and bizarre typos.
>
> On Aug 5, 2017 6:54 PM, "John Ciolino" <JohnCiolino@carolina.rr.com> wrote
:
> There is something simpler. See www.bandc.aero, look under electrical supp
lies/circuit protection devices/fuse blocks. A 20 circuit block ready to use
is $30.
>
> Good luck/
Message 6
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Subject: | Re: 1.57542 GHz Filter |
Hi Bob
I=99m *very* happy to have your expert attention consider this,
even though it=99s not a homebuilt.
VHF comm equipment is (are?) a King KX165 (com1) and a KX155 (com2),
each connected to its own roof-mount antenna.
The GPS is an Apollo GX50, with the =9Cpatch=9D antenna on
the tailcone, so there=99s about 6 feet between the antenna
systems. The coaxes are routed diversely, the GPS under the floor and
the COM via the pillars to the cabin roof.
The interference is generated from both com1 and com2.
A
> On Jul 23, 2017, at 4:22 PM, Robert L. Nuckolls, III
<nuckolls.bob@aeroelectric.com> wrote:
>
> At 11:35 AM 7/23/2017, you wrote:
>> I'm sorry - I should have given more detail.
>>
>> The GPS reports zero satellites in view and takes itself offline
during, and for a few seconds after, any transmission on either VHF COM
radio on one of a select few frequencies: 121.175MHz I think is one of
them. It=C3=A2=C2=C2=99s an old GPS and not a new problem. I=C3=A2=C2
=C2=99ve put a fair amount of resource into trying to fix it some while
ago, but not found a resolution.
>
> Understand.
>
> Some background on cross-system interference issues
> may be helpful . . .
>
> When one runs the DO160/MIL-STD 461/462 gauntlets,
> it is incumbent on the manufacturer of a new product
> to measure and document extraneous emissions to
> be sure they are below tolerable limits for other
> systems. We know that its difficult if not impossible
> to drive all potential interference emission to zero
> but the design goals call for reducing them to insignificance.
> I.e. the victim system's performance is not degraded.
>
>
> <b12a4d0.jpg>
>
> A fairly recent edition of DO160 offers these testing
> limits for radiated emissions. Note those 'notches' in
> the allowable emissions plot. They are centered over specific
> ranges of spectrum where RECEIVERS of itty-bitty signals
> would like to have a clear shot at detecting the information
> on those frequencies.
>
> Note the notches cover vhf nav/comm, uhf nav/comm, transponder/
> tcas and gps bands. Not sure what service is being protected
> up round 5 ghz . . .
>
> The energy levels allowed are the sum total of energies
> radiated from all components of a device and associated
> cables when laid out on a copper-top table like so.
>
> <b12a51e.jpg>
> All this is fine and dandy for potential antagonists
> that are NOT designed to radiate buckets of energy on purpose
> . . . i.e. transmitters. Tests for bkackbox/harness radiation are
> generally no big deal . . . I've never failed one.
>
> Then there are transmitters. By nature, they're intended to
> radiate signal levels on the order of 130 dBuv/m at 3 meters
> from an antenna. Given that 'extraneous' emission limits
> at GPS frequencies are on the order of 85 dBuv/m LOWER, this
> means that the 13th harmonic (121 mHz x13 = GPS) power has to
> be on the order of 1 times 10^-8 lower than the fundamental.
>
> Modern designs have no problem achieving this goal but
> there's a goodly number of legacy comm equipment that
> was designed and qualified before GPS became the backbone
> of aerial navigation.
>
> GPS signals are exceedingly weak . . . generally at or below
> atmospheric noise. The predictable nature of the incoming
> signal makes if possible to digitally sift useful data
> out of what would otherwise be noise.
>
> If adding the notch filter didn't fix the symptoms, then
> perhaps the interference isn't being radiated from the
> antenna . . . there have been cases of incompatible
> appliances were the interference was getting out of the
> enclosure (i.e. wouldn't pass the bench test as described above).
>
> Will your gps interference symptom repeat on the ground?
>
> You might try dummy loading the transceiver and see
> if the interference goes away. Oops, just noticed that it
> repeats on two separate transmitters (same brand/model?)
> How far apart are your comm and GPS antennas?
>
>
>
>
>
>
>
>
> Bob . . .
>
Message 7
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Subject: | Re: 2 AWG crimping tool |
Before you decide on which wisdom (solder vs crimp terminals) to follow, try to
do your own research. Most industry standards and federal guidance lean towards
crimp connections for vibration prone applications in aircraft. They seem to
show a preference for solder joints only on the lighter weight terminals found
on circuit boards and etc.
Read this topic online here:
http://forums.matronics.com/viewtopic.php?p=471538#471538
Message 8
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SteinAir has everything -
http://www.steinair.com/?search_category=&s=fuse&search_posttype=pro
duct
<http://www.steinair.com/?search_category=&s=fuse&search_posttype=pr
oduct>
Cheers, Stu
> On 6 Aug 2017, at 10:16, Ron Burnett <ronburnett@charter.net> wrote:
>
> Art,
>
> I got mine at West Marine.
>
> Ron Burnett
>
> May you have the Lord's blessings today!
> Sent from my iPad
>
> On Aug 5, 2017, at 6:57 PM, Art Zemon <art@zemon.name
<mailto:art@zemon.name>> wrote:
>
>> That's exactly what I need! Thanks.
>>
>> -- Art Z.
>>
>> Sent from my phone. Please excuse brevity and bizarre typos.
>>
>> On Aug 5, 2017 6:54 PM, "John Ciolino" <JohnCiolino@carolina.rr.com
<mailto:JohnCiolino@carolina.rr.com>> wrote:
>> There is something simpler. See www.bandc.aero
<http://www.bandc.aero/>, look under electrical supplies/circuit
protection devices/fuse blocks. A 20 circuit block ready to use is $30.
>>
>> Good luck/
>>
Message 9
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"SteinAir has everything" - apparently not: they don't seem to to the 16 and
20 fuse sizes !!!
Sent from my iPad
----x--O--x----
> On 6 Aug 2017, at 05:31 am, Stuart Hutchison <stuart@stuarthutchison.com.a
u> wrote:
>
> SteinAir has everything - http://www.steinair.com/?search_category=&s=
fuse&search_posttype=product
>
> Cheers, Stu
>
>> On 6 Aug 2017, at 10:16, Ron Burnett <ronburnett@charter.net> wrote:
>>
>> Art,
>>
>> I got mine at West Marine.
>>
>> Ron Burnett
>>
>> May you have the Lord's blessings today!
>> Sent from my iPad
>>
>>> On Aug 5, 2017, at 6:57 PM, Art Zemon <art@zemon.name> wrote:
>>>
>>> That's exactly what I need! Thanks.
>>>
>>> -- Art Z.
>>>
>>> Sent from my phone. Please excuse brevity and bizarre typos.
>>>
>>> On Aug 5, 2017 6:54 PM, "John Ciolino" <JohnCiolino@carolina.rr.com> wro
te:
>>> There is something simpler. See www.bandc.aero, look under electrical su
pplies/circuit protection devices/fuse blocks. A 20 circuit block ready to u
se is $30.
>>>
>>> Good luck/
>>>
>
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