some breadboards
in [Design]
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From: John Larkin on 10 Apr 2010 14:00 On Sat, 10 Apr 2010 13:22:59 -0400, John Ferrell <jferrell13(a)triad.rr.com> wrote: >On Thu, 08 Apr 2010 17:10:42 -0700, John Larkin ><jjlarkin(a)highNOTlandTHIStechnologyPART.com> wrote: > >> >>ftp://jjlarkin.lmi.net/BreadBoards.jpg >> >>ftp://jjlarkin.lmi.net/BreadBoards2.JPG >> >>John >What do you use to remove the copper cladding? >John Ferrell W8CCW Usually an x-acto knife. To remove a large strip, cut the edges, tin a corner, heat with a soldering iron, and peel up the copper with tweezers as you slide the tip along. A dremel is good too. Teflon boards are especially easy to cut and peel. After it's hacked, rub hard with a piece of Scotchbrite. That removes the copper burrs and polishes it up for soldering. Avoid fingerprints; they will corrode the copper in a few days and make ugly spots. You can do some fun stuff with kapton tape, too. John
From: Fester Bestertester on 10 Apr 2010 14:19 > You can do some fun stuff with kapton tape, too. Please elaborate. This sounds like fun!
From: John Larkin on 10 Apr 2010 15:40 On Sat, 10 Apr 2010 11:19:16 -0700, Fester Bestertester <fbt(a)fbt.net> wrote: >> You can do some fun stuff with kapton tape, too. > >Please elaborate. This sounds like fun! Here's an EclipsLite gate driving a phemt. The SO-8 sits on a piece of kapton tape with cutouts for the leads that solder to copper. Nice and planar. Two ugly fingerprints. I really need some gold-plated copperclad. ftp://jjlarkin.lmi.net/BB_fast.JPG You can build multi-GHz stuff, with Digikey parts, this way. John
From: Grant on 10 Apr 2010 18:00 On Sat, 10 Apr 2010 12:40:33 -0700, John Larkin <jjlarkin(a)highNOTlandTHIStechnologyPART.com> wrote: >On Sat, 10 Apr 2010 11:19:16 -0700, Fester Bestertester <fbt(a)fbt.net> >wrote: > >>> You can do some fun stuff with kapton tape, too. >> >>Please elaborate. This sounds like fun! > >Here's an EclipsLite gate driving a phemt. The SO-8 sits on a piece of >kapton tape with cutouts for the leads that solder to copper. Nice and >planar. Two ugly fingerprints. I really need some gold-plated >copperclad. > >ftp://jjlarkin.lmi.net/BB_fast.JPG > >You can build multi-GHz stuff, with Digikey parts, this way. What are those insulated standoffs along top of PCB called? I prototype power stuff on copperclad, usually glue small pieces of PCB for isolated connections, the things you're using look easier? Thanks, Grant. -- http://bugs.id.au/
From: John Larkin on 10 Apr 2010 20:55
On Sun, 11 Apr 2010 08:00:45 +1000, Grant <omg(a)grrr.id.au> wrote: >On Sat, 10 Apr 2010 12:40:33 -0700, John Larkin <jjlarkin(a)highNOTlandTHIStechnologyPART.com> wrote: > >>On Sat, 10 Apr 2010 11:19:16 -0700, Fester Bestertester <fbt(a)fbt.net> >>wrote: >> >>>> You can do some fun stuff with kapton tape, too. >>> >>>Please elaborate. This sounds like fun! >> >>Here's an EclipsLite gate driving a phemt. The SO-8 sits on a piece of >>kapton tape with cutouts for the leads that solder to copper. Nice and >>planar. Two ugly fingerprints. I really need some gold-plated >>copperclad. >> >>ftp://jjlarkin.lmi.net/BB_fast.JPG >> >>You can build multi-GHz stuff, with Digikey parts, this way. > >What are those insulated standoffs along top of PCB called? > Insulated standoffs! I got a bunch of them at some surplus store. I also like old-teevee-set type phenolic terminal strips, which you can still buy. >I prototype power stuff on copperclad, usually glue small pieces of PCB >for isolated connections, the things you're using look easier? That's a nice idea, but you do have to glue them down, and the glue tends to pop off the copper. A 22M resistor makes a pretty good standoff. Some sort of dremel circle cutter, like a tiny hole saw thing, would be cute, to cut isolated circles. John |