E
Eeyore
- Jan 1, 1970
- 0
DJ said:Perhaps you could just buy thin copper tape and cut out the shapes you
need?
A bit fiddly for DILs.
Graham
DJ said:Perhaps you could just buy thin copper tape and cut out the shapes you
need?
Eeyore said:A bit fiddly for DILs.
Never seen one with ground plane on one side.
I only wish I could send you a Wainwright 'Mini-Mount' catalogue. I bet I
have one somewhere here in the archive.
It's just such a breeze to use. It could be a useful side income for
anyone.
I used to love that sort of thing when I was back at Boeing. The H/W
contractor would build something and 'throw it over the wall'. If anything
didn't work, they'd just say, "You can fix it in the software".
;-)
You can get down to about 100 ps, 3 GHz or so, with Xacto knives and
copperclad. Kapton tape can be really helpful...
Rich said:If you'd sent your layout to one of those quick-turnaround board shops
when this thread started, it'd probably already be done, and you could
be refining it now. ;-)
Are you crazy?? I can't afford kapton tape! ;-)
But seriously, is there a supplier for kapton that's not $25-40/roll?
Are you crazy?? I can't afford kapton tape! ;-)
But seriously, is there a supplier for kapton that's not $25-40/roll?
So near but so far !
If only I could get my hands on those Mini-Mounts.
David said:Tim Wescott wrote,
Of course they are. Have you forgotten olimex.com and Tsvetan Usunov
who used to post to this group from Bulgaria?
Holy cow, that place sells everything... I dunno qwhat the OP thinks, but
for my part, Good link, thanks!- Hide quoted text -
- Show quoted text -
Holy cow, that place sells everything... I dunno qwhat the OP thinks, but
for my part, Good link, thanks!
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
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
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
JosephKK said: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 said: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
Leon said: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.