Breadboarding

[John Larkin]

On Wed, 24 Sep 2008 15:53:18 -0500, Kris Krieger <me@dowmuff.in>
wrote:

John Larkin <jjlarkin@highNOTlandTHIStechnologyPART.com> wrote in
news:u26ld49c38b8j0uauliu237dueqqa3u1l6@4ax.com:

On Wed, 24 Sep 2008 12:22:44 -0500, Kris Krieger <me@dowmuff.in
wrote:

Rich Grise <rich@example.net> wrote in
newsan.2008.09.23.23.48.53.373398@example.net:
[snip]

It depends on how much you want:
http://www.mcmaster.com/#catalog/114/3352
(scroll down a little)

Cheers!
Rich


Holy cow, that place sells everything... I dunno what the OP thinks, but
for my part, Good link, thanks!

McMaster is amazing, even for "electronic" stuff, like ceramic tubes
to wind power resistors on, or water-cooled cold plates and fittings,
or all sorts of insulating materials and goodies.

John



There is just too damn much interesting stuff in the world

Mouser, Digikey, McMaster, Grainger, Home Depot, AP Circuits, ebay,
www, google: we are living in the golden age of toys.

John

 

[John Larkin]

On Thu, 25 Sep 2008 16:47:23 GMT, Rich Grise <rich@example.net> wrote:

On Wed, 24 Sep 2008 12:22:44 -0500, Kris Krieger wrote:
Rich Grise <rich@example.net> wrote in
On Tue, 23 Sep 2008 20:11:22 +0000, Ben Jackson wrote:
On 2008-09-23, John Larkin <jjlarkin@highNOTlandTHIStechnologyPART.com

You can get down to about 100 ps, 3 GHz or so, with Xacto knives and
copperclad. Kapton tape can be really helpful...

Are you crazy?? I can't afford kapton tape! ;-)

But seriously, is there a supplier for kapton that's not $25-40/roll?

It depends on how much you want:
http://www.mcmaster.com/#catalog/114/3352
(scroll down a little)

Holy cow, that place sells everything... I dunno qwhat the OP thinks, but
for my part, Good link, thanks!

The astonishing thing is, they've got it all on hand. There's one a few
blocks from here, with a "will call" desk. You can order something and
drive down and pick it up.

But, admittedly, they're not shy about their prices - one guy I worked for
said that they're the convenience store of hardware. ;-)

Cheers!
Rich

We bought a water-cooled cold plate from them for about a third the
price from an official heatsink vendor.

John

 

[JosephKK]

On Mon, 22 Sep 2008 18:36:09 +0100, Eeyore
<rabbitsfriendsandrelations@hotmail.com> wrote:

Now, only a little while back I said I never breadboard, I go straight
to pcb.

This one's different though. The client wants to do the layout as part
of a larger scheme and I want to be double sure of stability in practice
as opposed to simulation because if he messes up, I can show mine
working fine.

As I'll be using a 65MHz ? op-amp I don't trust perfboard / Veroboard
for this.

I recall some self adhesive 'pre-etched shapes' that you could stick on
a ground plane. The name Wainwright comes to mind but google isn't
helping much.

Any suggestions ?

Graham

Actually a small lot quick turn shop sounds in order here. Unless you
desire to prove that you can make it work on perfboard (kludgeboard)
prototype don't bother. This client wants "professional look"
immediately. Disappoint at your own hazard.

 

[Leon]

On 22 Sep, 22:14, DJ Delorie <d...@delorie.com> wrote:

Eeyore <rabbitsfriendsandrelati...@hotmail.com> writes:
Similar kind of thing. Except I only need a handful !

Next time someone tells me I'm wasting my time making my own boards,
I'm going to point them at this thread

Last time this came up, it got me thinking.  I can etch on 8 mil FR4,
and double-stick tape that to an unetched copper clad board, to get
what I think you're asking for.  But, not being an RF expert, I have
no idea how well it would "work".  I think it would be worth the
effort to find out if this is a viable RF prototyping platform, just
to satisfy my curiosity, if you can send me a PDF of a SS layout (no
vias .  Contact me off-list if you're interested.

DJ

That technique works very well. Someone mentioned the Wainwright
system, which is basically the same - they were sometimes used at
Racal Comms for RF prototypes when I worked there. I've used it
myself, etching the carriers at home.

Leon

 

[Leon]

On 22 Sep, 22:14, DJ Delorie <d...@delorie.com> wrote:

Eeyore <rabbitsfriendsandrelati...@hotmail.com> writes:
Similar kind of thing. Except I only need a handful !

Next time someone tells me I'm wasting my time making my own boards,
I'm going to point them at this thread

Last time this came up, it got me thinking.  I can etch on 8 mil FR4,
and double-stick tape that to an unetched copper clad board, to get
what I think you're asking for.  But, not being an RF expert, I have
no idea how well it would "work".  I think it would be worth the
effort to find out if this is a viable RF prototyping platform, just
to satisfy my curiosity, if you can send me a PDF of a SS layout (no
vias .  Contact me off-list if you're interested.

DJ

That technique works very well. Someone mentioned the Wainwright
system, which is basically the same - they were sometimes used at
Racal Comms for RF prototypes when I worked there. I've used it
myself, etching the carriers at home.

Leon

 

[Eeyore]

JosephKK wrote:

Eeyore wrote:

Now, only a little while back I said I never breadboard, I go straight
to pcb.

This one's different though. The client wants to do the layout as part
of a larger scheme and I want to be double sure of stability in practice
as opposed to simulation because if he messes up, I can show mine
working fine.

As I'll be using a 65MHz ? op-amp I don't trust perfboard / Veroboard
for this.

I recall some self adhesive 'pre-etched shapes' that you could stick on
a ground plane. The name Wainwright comes to mind but google isn't
helping much.

Actually a small lot quick turn shop sounds in order here. Unless you
desire to prove that you can make it work on perfboard (kludgeboard)
prototype don't bother. This client wants "professional look"
immediately. Disappoint at your own hazard.

Ah, well the client wouldn't be getting it. It was more for my own peace of
mind. Plus it's a sort of freebie job in return for a favour thing so don't
want to spend much money on it.

Graham

 

[Eeyore]

Leon wrote:

On 22 Sep, 22:14, DJ Delorie <d...@delorie.com> wrote:
Eeyore <rabbitsfriendsandrelati...@hotmail.com> writes:
Similar kind of thing. Except I only need a handful !

Next time someone tells me I'm wasting my time making my own boards,
I'm going to point them at this thread

Last time this came up, it got me thinking. I can etch on 8 mil FR4,
and double-stick tape that to an unetched copper clad board, to get
what I think you're asking for. But, not being an RF expert, I have
no idea how well it would "work". I think it would be worth the
effort to find out if this is a viable RF prototyping platform, just
to satisfy my curiosity, if you can send me a PDF of a SS layout (no
vias . Contact me off-list if you're interested.

That technique works very well. Someone mentioned the Wainwright
system, which is basically the same - they were sometimes used at
Racal Comms for RF prototypes when I worked there. I've used it
myself, etching the carriers at home.

Yes it was the Wainwright system I had in mind but I can find no info on
the web.

Graham

 

[Eeyore]

Leon wrote:

Eeyore wrote:
Leon wrote:
On 22 Sep, 22:14, DJ Delorie <d...@delorie.com> wrote:
Eeyore <rabbitsfriendsandrelati...@hotmail.com> writes:
Similar kind of thing. Except I only need a handful !

Next time someone tells me I'm wasting my time making my own boards,
I'm going to point them at this thread

Last time this came up, it got me thinking. I can etch on 8 mil FR4,
and double-stick tape that to an unetched copper clad board, to get
what I think you're asking for. But, not being an RF expert, I have
no idea how well it would "work". I think it would be worth the
effort to find out if this is a viable RF prototyping platform, just
to satisfy my curiosity, if you can send me a PDF of a SS layout (no
vias . Contact me off-list if you're interested.

That technique works very well. Someone mentioned the Wainwright
system, which is basically the same - they were sometimes used at
Racal Comms for RF prototypes when I worked there. I've used it
myself, etching the carriers at home.

Yes it was the Wainwright system I had in mind but I can find no info on
the web.


They were extremely expensive for little blank PCBs with double-sided
tape on the back.

They weren't cheap as I recall for sure ! But I didn't need that much. Mind you
MOQs would probably have caught me out.

I liberated a few from the lab for my own use when I
was at Racal.

I have a feeling I likewise may have some in a box hidden away somewhere too.

Graham

 

[Leon]

On 2 Oct, 14:37, Eeyore <rabbitsfriendsandrelati...@hotmail.com>
wrote:

Leon wrote:
On 22 Sep, 22:14, DJ Delorie <d...@delorie.com> wrote:
Eeyore <rabbitsfriendsandrelati...@hotmail.com> writes:
Similar kind of thing. Except I only need a handful !

Next time someone tells me I'm wasting my time making my own boards,
I'm going to point them at this thread

Last time this came up, it got me thinking.  I can etch on 8 mil FR4,
and double-stick tape that to an unetched copper clad board, to get
what I think you're asking for.  But, not being an RF expert, I have
no idea how well it would "work".  I think it would be worth the
effort to find out if this is a viable RF prototyping platform, just
to satisfy my curiosity, if you can send me a PDF of a SS layout (no
vias .  Contact me off-list if you're interested.

That technique works very well. Someone mentioned the Wainwright
system, which is basically the same - they were sometimes used at
Racal Comms for RF prototypes when I worked there. I've used it
myself, etching the carriers at home.

Yes it was the Wainwright system I had in mind but I can find no info on
the web.

Graham

They were extremely expensive for little blank PCBs with double-sided
tape on the back. I liberated a few from the lab for my own use when I
was at Racal.

Leon