new dc/dc converters...

[John Larkin]

Murata makes some cool converters, with a ferrite toroid embedded in
the PCB, with windings made of traces and vias.

https://www.dropbox.com/sh/lp9lb68pg3dohfa/AACLemXklO6JCdQRebMu1Vm6a?dl=0

Recom has some new parts, similar but they use a conventional wound
transformer.

https://www.dropbox.com/sh/thwbtq5mswzllg7/AACQQkqKd2XLj-MgWGonUd5Ia?dl=0

Both have standard footprints.

The Muratas specify 2.5 pF isolation capacitance, and the Recoms spec
75 max.

 

[Phil Hobbs]

John Larkin wrote:

Murata makes some cool converters, with a ferrite toroid embedded in
the PCB, with windings made of traces and vias.

https://www.dropbox.com/sh/lp9lb68pg3dohfa/AACLemXklO6JCdQRebMu1Vm6a?dl=0

Recom has some new parts, similar but they use a conventional wound
transformer.

https://www.dropbox.com/sh/thwbtq5mswzllg7/AACQQkqKd2XLj-MgWGonUd5Ia?dl=0

Both have standard footprints.

The Muratas specify 2.5 pF isolation capacitance, and the Recoms spec
75 max.

We use the Muratas a lot, both 1W and 2W varieties. They\'re pretty
inoffensive from an EMI point of view, which is a big win.

The Recoms look as though they\'re also toroids, but I can\'t tell from
the photos or the datasheet.

Since custom packaging has become much cheaper, we\'re now using a
combination of solid brass machined parts, 3-D printing, and laser cut
sheet brass faceplates, e.g. these ones:

<https://hobbs-eo.com>.

The supplies go in the black plastic part and the photoreceiver inside
the brass box, communicating via feedthrough caps in the old-school way.
Bling bling!

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510

http://electrooptical.net
http://hobbs-eo.com

 

[John Larkin]

On Tue, 27 Sep 2022 14:38:11 -0400, Phil Hobbs
<pcdhSpamMeSenseless@electrooptical.net> wrote:

John Larkin wrote:

Murata makes some cool converters, with a ferrite toroid embedded in
the PCB, with windings made of traces and vias.

https://www.dropbox.com/sh/lp9lb68pg3dohfa/AACLemXklO6JCdQRebMu1Vm6a?dl=0

Recom has some new parts, similar but they use a conventional wound
transformer.

https://www.dropbox.com/sh/thwbtq5mswzllg7/AACQQkqKd2XLj-MgWGonUd5Ia?dl=0

Both have standard footprints.

The Muratas specify 2.5 pF isolation capacitance, and the Recoms spec
75 max.


We use the Muratas a lot, both 1W and 2W varieties. They\'re pretty
inoffensive from an EMI point of view, which is a big win.

The Recoms look as though they\'re also toroids, but I can\'t tell from
the photos or the datasheet.

Since custom packaging has become much cheaper, we\'re now using a
combination of solid brass machined parts, 3-D printing, and laser cut
sheet brass faceplates, e.g. these ones:

https://hobbs-eo.com>.

The supplies go in the black plastic part and the photoreceiver inside
the brass box, communicating via feedthrough caps in the old-school way.
Bling bling!

Gold plate it!

(Mo and I have been playing with gold leaf lately.)

Cheers

Phil Hobbs

We finally gave up on the dreadful Hammond boxes and custom labels. We
have our own extrusions, blue anodized, and blast all the artwork with
a Boss laser.

https://www.dropbox.com/sh/cfnhhynh6p3auxf/AACPOsScNGmuH1lAlNCPmSdGa?dl=0

This gets us better EMI and some conduction cooling too. Top and
bottom both come off, which is handy when we have parts on both sides
of the board.

 

[Jan Panteltje]

On a sunny day (Tue, 27 Sep 2022 12:44:27 -0700) it happened John Larkin
<jlarkin@highland_atwork_technology.com> wrote in
<cpi6jhp2rui2013ud74ih85ncn8cjmhkn8@4ax.com>:

We finally gave up on the dreadful Hammond boxes and custom labels. We
have our own extrusions, blue anodized, and blast all the artwork with
a Boss laser.

https://www.dropbox.com/sh/cfnhhynh6p3auxf/AACPOsScNGmuH1lAlNCPmSdGa?dl=0

This gets us better EMI and some conduction cooling too. Top and
bottom both come off, which is handy when we have parts on both sides
of the board.

Makes a bad impression
I would like connectors fixed mechanically to the front panel
as this way any forces are directly passed to the peeseebee.
The trimmer holes look similary shit
The trimmer texts are vertical, try
w
i
d
t
h

back to the drawing board.

Do you guys do anything with 3D printing or metal 3D printing?

 

[John Larkin]

On Wed, 28 Sep 2022 04:56:06 GMT, Jan Panteltje
<pNaonStpealmtje@yahoo.com> wrote:

On a sunny day (Tue, 27 Sep 2022 12:44:27 -0700) it happened John Larkin
jlarkin@highland_atwork_technology.com> wrote in
cpi6jhp2rui2013ud74ih85ncn8cjmhkn8@4ax.com>:

We finally gave up on the dreadful Hammond boxes and custom labels. We
have our own extrusions, blue anodized, and blast all the artwork with
a Boss laser.

https://www.dropbox.com/sh/cfnhhynh6p3auxf/AACPOsScNGmuH1lAlNCPmSdGa?dl=0

This gets us better EMI and some conduction cooling too. Top and
bottom both come off, which is handy when we have parts on both sides
of the board.

Makes a bad impression
I would like connectors fixed mechanically to the front panel
as this way any forces are directly passed to the peeseebee.

Think about the forces when the connector is fastened to the panel.

The trimmer holes look similary shit
The trimmer texts are vertical, try
w
i
d
t
h

back to the drawing board.

Feel free to not buy any. We don\'t mind.

Show us some of your products.

Do you guys do anything with 3D printing or metal 3D printing?

Plastic 3D for some test fixtures. Actually, machining usually makes
more sense.

 

[Don]

Jan Panteltje wrote:

John Larkin wrote:

We finally gave up on the dreadful Hammond boxes and custom labels. We
have our own extrusions, blue anodized, and blast all the artwork with
a Boss laser.

https://www.dropbox.com/sh/cfnhhynh6p3auxf/AACPOsScNGmuH1lAlNCPmSdGa?dl=0

This gets us better EMI and some conduction cooling too. Top and
bottom both come off, which is handy when we have parts on both sides
of the board.

Makes a bad impression
I would like connectors fixed mechanically to the front panel
as this way any forces are directly passed to the peeseebee.
The trimmer holes look similary shit
The trimmer texts are vertical, try
w
i
d
t
h

back to the drawing board.

Do you guys do anything with 3D printing or metal 3D printing?

A horrific sight to behold. Nonetheless, it\'s good enough for government
work.

On the other hand, companies who manufacture consumer products must put
more thought into design language: <https://paia.com/>
A couple of years ago Larkin bad-mouthed PAIA\'s engineers because
they used pots in their legacy design: <https://crcomp.net/paia/4720.png>

Danke,

--
Don, KB7RPU, https://www.qsl.net/kb7rpu
There was a young lady named Bright Whose speed was far faster than light;
She set out one day In a relative way And returned on the previous night.

 

[Jan Panteltje]

On a sunny day (Wed, 28 Sep 2022 16:19:14 -0000 (UTC)) it happened \"Don\"
<g@crcomp.net> wrote in <20220928a@crcomp.net>:

Jan Panteltje wrote:
John Larkin wrote:

We finally gave up on the dreadful Hammond boxes and custom labels. We
have our own extrusions, blue anodized, and blast all the artwork with
a Boss laser.

https://www.dropbox.com/sh/cfnhhynh6p3auxf/AACPOsScNGmuH1lAlNCPmSdGa?dl=0

This gets us better EMI and some conduction cooling too. Top and
bottom both come off, which is handy when we have parts on both sides
of the board.

Makes a bad impression
I would like connectors fixed mechanically to the front panel
as this way any forces are directly passed to the peeseebee.
The trimmer holes look similary shit
The trimmer texts are vertical, try
w
i
d
t
h

back to the drawing board.

Do you guys do anything with 3D printing or metal 3D printing?

A horrific sight to behold. Nonetheless, it\'s good enough for government
work.

On the other hand, companies who manufacture consumer products must put
more thought into design language: <https://paia.com/
A couple of years ago Larkin bad-mouthed PAIA\'s engineers because
they used pots in their legacy design: <https://crcomp.net/paia/4720.png

Nice!
A real UJT as oscillator, I still have some from ebay ..
sine out, wonder about the harmonics... Well that is the intension...

 

[Jan Panteltje]

On a sunny day (Wed, 28 Sep 2022 07:39:04 -0700) it happened John Larkin
<jlarkin@highlandSNIPMEtechnology.com> wrote in
<8qm8jh9oaked9p4mh4jbumqdd0ict06n5j@4ax.com>:

On Wed, 28 Sep 2022 04:56:06 GMT, Jan Panteltje
pNaonStpealmtje@yahoo.com> wrote:

On a sunny day (Tue, 27 Sep 2022 12:44:27 -0700) it happened John Larkin
jlarkin@highland_atwork_technology.com> wrote in
cpi6jhp2rui2013ud74ih85ncn8cjmhkn8@4ax.com>:

We finally gave up on the dreadful Hammond boxes and custom labels. We
have our own extrusions, blue anodized, and blast all the artwork with
a Boss laser.

https://www.dropbox.com/sh/cfnhhynh6p3auxf/AACPOsScNGmuH1lAlNCPmSdGa?dl=0

This gets us better EMI and some conduction cooling too. Top and
bottom both come off, which is handy when we have parts on both sides
of the board.

Makes a bad impression
I would like connectors fixed mechanically to the front panel
as this way any forces are directly passed to the peeseebee.

Think about the forces when the connector is fastened to the panel.

Those are controlled by you during assembly, but you never met Big Joe who can turn anything past breakpoint,..

The trimmer holes look similary shit
The trimmer texts are vertical, try
w
i
d
t
h

back to the drawing board.

Feel free to not buy any. We don\'t mind.

Freedom!!!
Mr Hobbs is selling quantum light detectors for 1200 $ ??
Did you read this:
https://www.space.com/jupiter-photo-most-detailed-by-photographer
I followed all the links and postings to get the details.


>Show us some of your products.

1*2=2
4*3=12
2*5=10
The rest is now classified but will be used against the US if they keep destroying pipelines.

Do you guys do anything with 3D printing or metal 3D printing?

Plastic 3D for some test fixtures. Actually, machining usually makes
more sense.

If you can do it with a lathe, yes perhaps.
There is a company that makes whole rocket engines using metal 3D printing
https://www.relativityspace.com/

 

[John Larkin]

On Wed, 28 Sep 2022 16:19:14 -0000 (UTC), \"Don\" <g@crcomp.net> wrote:

Jan Panteltje wrote:
John Larkin wrote:

We finally gave up on the dreadful Hammond boxes and custom labels. We
have our own extrusions, blue anodized, and blast all the artwork with
a Boss laser.

https://www.dropbox.com/sh/cfnhhynh6p3auxf/AACPOsScNGmuH1lAlNCPmSdGa?dl=0

This gets us better EMI and some conduction cooling too. Top and
bottom both come off, which is handy when we have parts on both sides
of the board.

Makes a bad impression
I would like connectors fixed mechanically to the front panel
as this way any forces are directly passed to the peeseebee.
The trimmer holes look similary shit
The trimmer texts are vertical, try
w
i
d
t
h

back to the drawing board.

Do you guys do anything with 3D printing or metal 3D printing?

A horrific sight to behold. Nonetheless, it\'s good enough for government
work.

On the other hand, companies who manufacture consumer products must put
more thought into design language: <https://paia.com/
A couple of years ago Larkin bad-mouthed PAIA\'s engineers because
they used pots in their legacy design: <https://crcomp.net/paia/4720.png

Danke,

Pots are a bad, expensive substitute for managing tolerances and betas
and quiescent currents and such. Sometimes they are great for
calibration, especially for fast stuff.

 

[Lasse Langwadt Christensen]

onsdag den 28. september 2022 kl. 21.39.47 UTC+2 skrev John Larkin:

On Wed, 28 Sep 2022 16:19:14 -0000 (UTC), \"Don\" <g...@crcomp.net> wrote:

Jan Panteltje wrote:
John Larkin wrote:

We finally gave up on the dreadful Hammond boxes and custom labels. We
have our own extrusions, blue anodized, and blast all the artwork with
a Boss laser.

https://www.dropbox.com/sh/cfnhhynh6p3auxf/AACPOsScNGmuH1lAlNCPmSdGa?dl=0

This gets us better EMI and some conduction cooling too. Top and
bottom both come off, which is handy when we have parts on both sides
of the board.

Makes a bad impression
I would like connectors fixed mechanically to the front panel
as this way any forces are directly passed to the peeseebee.
The trimmer holes look similary shit
The trimmer texts are vertical, try
w
i
d
t
h

back to the drawing board.

Do you guys do anything with 3D printing or metal 3D printing?

A horrific sight to behold. Nonetheless, it\'s good enough for government
work.

On the other hand, companies who manufacture consumer products must put
more thought into design language: <https://paia.com/
A couple of years ago Larkin bad-mouthed PAIA\'s engineers because
they used pots in their legacy design: <https://crcomp.net/paia/4720.png

Danke,
Pots are a bad, expensive substitute for managing tolerances and betas
and quiescent currents and such. Sometimes they are great for
calibration, especially for fast stuff.

Motec \"ScrewDriver ECU\" from sometime in the 80\'s: https://imgur.com/dUMo3sS

 

[Clifford Heath]

On 29/9/22 02:19, Don wrote:

On the other hand, companies who manufacture consumer products must put
more thought into design language: <https://paia.com/

That\'s not just consumer - it\'s music production. Those folk are true
aesthetes. Musicians believe that beautiful instruments enable them to
make more beautiful music, and I think they\'re right.

CH

 

[John Larkin]

On Thu, 29 Sep 2022 07:00:50 +1000, Clifford Heath
<no_spam@please.net> wrote:

On 29/9/22 02:19, Don wrote:
On the other hand, companies who manufacture consumer products must put
more thought into design language: <https://paia.com/

That\'s not just consumer - it\'s music production. Those folk are true
aesthetes. Musicians believe that beautiful instruments enable them to
make more beautiful music, and I think they\'re right.

CH

It\'s a fact that beautiful schematics and pcb\'s work better than ugly
ones.

 

[Anthony William Sloman]

On Thursday, September 29, 2022 at 8:05:37 AM UTC+10, John Larkin wrote:

On Thu, 29 Sep 2022 07:00:50 +1000, Clifford Heath <no_...@please.net> wrote:
On 29/9/22 02:19, Don wrote:

On the other hand, companies who manufacture consumer products must put
more thought into design language: <https://paia.com/

That\'s not just consumer - it\'s music production. Those folk are true
aesthetes. Musicians believe that beautiful instruments enable them to
make more beautiful music, and I think they\'re right.

It\'s a fact that beautiful schematics and pcb\'s work better than ugly ones.

But beauty is in the eye of the beholder.

Some people don\'t think about what they are seeing, and aesthetic appreciation isn\'t a rational process. If a schematic or a pcb just looks like one that worked well in the past, you are going to like it better than one that looks like something that didn\'t. As \"facts\" go, this has to be one of the less useful ones.

--
Bill Sloman, Sydney

 

[Ricky]

On Wednesday, September 28, 2022 at 10:39:18 AM UTC-4, John Larkin wrote:

On Wed, 28 Sep 2022 04:56:06 GMT, Jan Panteltje
pNaonSt...@yahoo.com> wrote:

On a sunny day (Tue, 27 Sep 2022 12:44:27 -0700) it happened John Larkin
jlarkin@highland_atwork_technology.com> wrote in
cpi6jhp2rui2013ud...@4ax.com>:

We finally gave up on the dreadful Hammond boxes and custom labels. We
have our own extrusions, blue anodized, and blast all the artwork with
a Boss laser.

https://www.dropbox.com/sh/cfnhhynh6p3auxf/AACPOsScNGmuH1lAlNCPmSdGa?dl=0

This gets us better EMI and some conduction cooling too. Top and
bottom both come off, which is handy when we have parts on both sides
of the board.

Makes a bad impression
I would like connectors fixed mechanically to the front panel
as this way any forces are directly passed to the peeseebee.
Think about the forces when the connector is fastened to the panel.

If your designer can\'t design a board and front panel that doesn\'t stress the connector, you need to get a new designer!

The trimmer holes look similary shit
The trimmer texts are vertical, try
w
i
d
t
h

back to the drawing board.
Feel free to not buy any. We don\'t mind.

Show us some of your products.

Lots of people don\'t buy your products. Do you want a list?

--

Rick C.

- Get 1,000 miles of free Supercharging
- Tesla referral code - https://ts.la/richard11209

 

[Ricky]

On Wednesday, September 28, 2022 at 9:55:38 PM UTC-4, bill....@ieee.org wrote:

On Thursday, September 29, 2022 at 8:05:37 AM UTC+10, John Larkin wrote:
On Thu, 29 Sep 2022 07:00:50 +1000, Clifford Heath <no_...@please.net> wrote:
On 29/9/22 02:19, Don wrote:

On the other hand, companies who manufacture consumer products must put
more thought into design language: <https://paia.com/

That\'s not just consumer - it\'s music production. Those folk are true
aesthetes. Musicians believe that beautiful instruments enable them to
make more beautiful music, and I think they\'re right.

It\'s a fact that beautiful schematics and pcb\'s work better than ugly ones.
But beauty is in the eye of the beholder.

Some people don\'t think about what they are seeing, and aesthetic appreciation isn\'t a rational process. If a schematic or a pcb just looks like one that worked well in the past, you are going to like it better than one that looks like something that didn\'t. As \"facts\" go, this has to be one of the less useful ones.

I find dollar signs to be very aesthetic. That is what the boards produce, so the ultimate perspective on the work.

--

Rick C.

+ Get 1,000 miles of free Supercharging
+ Tesla referral code - https://ts.la/richard11209

 

[John Larkin]

On Wed, 28 Sep 2022 17:08:58 GMT, Jan Panteltje
<pNaonStpealmtje@yahoo.com> wrote:

On a sunny day (Wed, 28 Sep 2022 07:39:04 -0700) it happened John Larkin
jlarkin@highlandSNIPMEtechnology.com> wrote in
8qm8jh9oaked9p4mh4jbumqdd0ict06n5j@4ax.com>:

On Wed, 28 Sep 2022 04:56:06 GMT, Jan Panteltje
pNaonStpealmtje@yahoo.com> wrote:

On a sunny day (Tue, 27 Sep 2022 12:44:27 -0700) it happened John Larkin
jlarkin@highland_atwork_technology.com> wrote in
cpi6jhp2rui2013ud74ih85ncn8cjmhkn8@4ax.com>:

We finally gave up on the dreadful Hammond boxes and custom labels. We
have our own extrusions, blue anodized, and blast all the artwork with
a Boss laser.

https://www.dropbox.com/sh/cfnhhynh6p3auxf/AACPOsScNGmuH1lAlNCPmSdGa?dl=0

This gets us better EMI and some conduction cooling too. Top and
bottom both come off, which is handy when we have parts on both sides
of the board.

Makes a bad impression
I would like connectors fixed mechanically to the front panel
as this way any forces are directly passed to the peeseebee.

Think about the forces when the connector is fastened to the panel.

Those are controlled by you during assembly, but you never met Big Joe who can turn anything past breakpoint,..

Leave connector nuts loose?

 

[Phil Hobbs]

John Larkin wrote:

On Wed, 28 Sep 2022 17:08:58 GMT, Jan Panteltje
pNaonStpealmtje@yahoo.com> wrote:

On a sunny day (Wed, 28 Sep 2022 07:39:04 -0700) it happened John Larkin
jlarkin@highlandSNIPMEtechnology.com> wrote in
8qm8jh9oaked9p4mh4jbumqdd0ict06n5j@4ax.com>:

On Wed, 28 Sep 2022 04:56:06 GMT, Jan Panteltje
pNaonStpealmtje@yahoo.com> wrote:

On a sunny day (Tue, 27 Sep 2022 12:44:27 -0700) it happened John Larkin
jlarkin@highland_atwork_technology.com> wrote in
cpi6jhp2rui2013ud74ih85ncn8cjmhkn8@4ax.com>:

We finally gave up on the dreadful Hammond boxes and custom labels. We
have our own extrusions, blue anodized, and blast all the artwork with
a Boss laser.

https://www.dropbox.com/sh/cfnhhynh6p3auxf/AACPOsScNGmuH1lAlNCPmSdGa?dl=0

This gets us better EMI and some conduction cooling too. Top and
bottom both come off, which is handy when we have parts on both sides
of the board.

Makes a bad impression
I would like connectors fixed mechanically to the front panel
as this way any forces are directly passed to the peeseebee.

Think about the forces when the connector is fastened to the panel.

Those are controlled by you during assembly, but you never met Big Joe who can turn anything past breakpoint,..

Leave connector nuts loose?

We use a fair number of U.FL to SMA bulkhead cables, which solves both
problems.

Cheers

Phil Hobbs

--
Dr Philip C D Hobbs
Principal Consultant
ElectroOptical Innovations LLC / Hobbs ElectroOptics
Optics, Electro-optics, Photonics, Analog Electronics
Briarcliff Manor NY 10510

http://electrooptical.net
http://hobbs-eo.com

 

[Lasse Langwadt Christensen]

torsdag den 29. september 2022 kl. 17.16.20 UTC+2 skrev Phil Hobbs:

John Larkin wrote:
On Wed, 28 Sep 2022 17:08:58 GMT, Jan Panteltje
pNaonSt...@yahoo.com> wrote:

On a sunny day (Wed, 28 Sep 2022 07:39:04 -0700) it happened John Larkin
jla...@highlandSNIPMEtechnology.com> wrote in
8qm8jh9oaked9p4mh...@4ax.com>:

On Wed, 28 Sep 2022 04:56:06 GMT, Jan Panteltje
pNaonSt...@yahoo.com> wrote:

On a sunny day (Tue, 27 Sep 2022 12:44:27 -0700) it happened John Larkin
jlarkin@highland_atwork_technology.com> wrote in
cpi6jhp2rui2013ud...@4ax.com>:

We finally gave up on the dreadful Hammond boxes and custom labels. We
have our own extrusions, blue anodized, and blast all the artwork with
a Boss laser.

https://www.dropbox.com/sh/cfnhhynh6p3auxf/AACPOsScNGmuH1lAlNCPmSdGa?dl=0

This gets us better EMI and some conduction cooling too. Top and
bottom both come off, which is handy when we have parts on both sides
of the board.

Makes a bad impression
I would like connectors fixed mechanically to the front panel
as this way any forces are directly passed to the peeseebee.

Think about the forces when the connector is fastened to the panel.

Those are controlled by you during assembly, but you never met Big Joe who can turn anything past breakpoint,..

Leave connector nuts loose?

We use a fair number of U.FL to SMA bulkhead cables, which solves both
problems.

we use edge launch SMAs and fit them to the panel before soldering

 

[John Larkin]

On Thu, 29 Sep 2022 11:16:11 -0400, Phil Hobbs
<pcdhSpamMeSenseless@electrooptical.net> wrote:

John Larkin wrote:
On Wed, 28 Sep 2022 17:08:58 GMT, Jan Panteltje
pNaonStpealmtje@yahoo.com> wrote:

On a sunny day (Wed, 28 Sep 2022 07:39:04 -0700) it happened John Larkin
jlarkin@highlandSNIPMEtechnology.com> wrote in
8qm8jh9oaked9p4mh4jbumqdd0ict06n5j@4ax.com>:

On Wed, 28 Sep 2022 04:56:06 GMT, Jan Panteltje
pNaonStpealmtje@yahoo.com> wrote:

On a sunny day (Tue, 27 Sep 2022 12:44:27 -0700) it happened John Larkin
jlarkin@highland_atwork_technology.com> wrote in
cpi6jhp2rui2013ud74ih85ncn8cjmhkn8@4ax.com>:

We finally gave up on the dreadful Hammond boxes and custom labels. We
have our own extrusions, blue anodized, and blast all the artwork with
a Boss laser.

https://www.dropbox.com/sh/cfnhhynh6p3auxf/AACPOsScNGmuH1lAlNCPmSdGa?dl=0

This gets us better EMI and some conduction cooling too. Top and
bottom both come off, which is handy when we have parts on both sides
of the board.

Makes a bad impression
I would like connectors fixed mechanically to the front panel
as this way any forces are directly passed to the peeseebee.

Think about the forces when the connector is fastened to the panel.

Those are controlled by you during assembly, but you never met Big Joe who can turn anything past breakpoint,..

Leave connector nuts loose?


We use a fair number of U.FL to SMA bulkhead cables, which solves both
problems.

That\'s expensive and labor intensive and wouldn\'t work very well in a
small box with lots of connectors.

http://www.highlandtechnology.com/DSS/T564DS.shtml

http://www.highlandtechnology.com/DSS/J270DS.shtml

We are not seeing connectors broken off of PC boards. They make
Corvettes from epoxy-glass.

We did get one batch of end plates with anodize in the countersunk
holes, in defiance of the notes on the drawing. We\'ll have to touch up
with a countersink to clean them up, a mild nuisance. I wonder if
there is a kind of flathead screw that has groves or teeth on the
bevels to scrape through the anoddize. I\'d google but I don\'t know
what to call that.

Maybe our Boss laser could do it, clean out the anodize on the
countersinks.

 

[Jan Panteltje]

On a sunny day (Thu, 29 Sep 2022 08:05:21 -0700) it happened John Larkin
<jlarkin@highlandSNIPMEtechnology.com> wrote in
<uvcbjht8mn1lo03rkrfca7ui5i4p2ttca1@4ax.com>:

On Wed, 28 Sep 2022 17:08:58 GMT, Jan Panteltje
pNaonStpealmtje@yahoo.com> wrote:

On a sunny day (Wed, 28 Sep 2022 07:39:04 -0700) it happened John Larkin
jlarkin@highlandSNIPMEtechnology.com> wrote in
8qm8jh9oaked9p4mh4jbumqdd0ict06n5j@4ax.com>:

On Wed, 28 Sep 2022 04:56:06 GMT, Jan Panteltje
pNaonStpealmtje@yahoo.com> wrote:

On a sunny day (Tue, 27 Sep 2022 12:44:27 -0700) it happened John Larkin
jlarkin@highland_atwork_technology.com> wrote in
cpi6jhp2rui2013ud74ih85ncn8cjmhkn8@4ax.com>:

We finally gave up on the dreadful Hammond boxes and custom labels. We
have our own extrusions, blue anodized, and blast all the artwork with
a Boss laser.

https://www.dropbox.com/sh/cfnhhynh6p3auxf/AACPOsScNGmuH1lAlNCPmSdGa?dl=0

This gets us better EMI and some conduction cooling too. Top and
bottom both come off, which is handy when we have parts on both sides
of the board.

Makes a bad impression
I would like connectors fixed mechanically to the front panel
as this way any forces are directly passed to the peeseebee.

Think about the forces when the connector is fastened to the panel.

Those are controlled by you during assembly, but you never met Big Joe who can turn anything past breakpoint,..

Leave connector nuts loose?

Well I think you know what I mean...
Today was interesting, I killed my Chinese satellite receiver box few days ago in the storm
likely did draw too much power when I moved the dish against the storm we had.
had replaced the original current limited 12 V wallwart with a more powerful one.. my fault...
It would still move the dish but always to the wrong angle..
Dish motor on PC sat card OK,, So dish positioner OK.
Bought the thing for about 30$ or so on ebay years ago, 1080 progressive HD, >900 free TV channels, many satellites..
Lots like these now for double that price locally...
Anyways opened it, and could not find any defective parts
Very nice multilayer board, very dense, tuner, several switchmode converters...
no partnumers readable..
Almost gave up.. what could it be? lots of work to enter all my satellites and stations in a new one..
then I had an idea, nothing to lose... switched from manual angle definitions to USALS
and low and behold, now I have even more stations
Probably a bit flipped in the firmware, but in USALS it calculates position from your current (GPS) location each time you select a sat,

And look how nice it is made,:
http://panteltje.com/pub/hd_sat_reciever_front_IXIMG_0862.JPG
http://panteltje.com/pub/hd_sat_receiver_backpanel_IXIMG_0863.JPG
http://panteltje.com/pub/hd_sat_receiver_backpanel_IXIMG_0864.JPG
http://panteltje.com/pub/hd_sat_receiver_inside_IXIMG_0865.JPG
that is a 500 MHz processor under that little heatsink (ball grid array)
The buttons and display are on a separate PCBs conencted with flex cable.
You can open it by removing 2 screws in the back
thin metal housing just slides backward...
nice cinch connectors screwed against the back
LNB input fixed to tuner module that is fixed to the PCB can take a hit

and 30$ !!!!
There is a LOT to learn from this, I had it all apart and was amazed by the PCB layout

My hat off to the designer of that box.

Value for money .. value for many...
many versions
https://www.ebay.com/itm/354190172519