[AMRadio] Dumber than a rock question . .


Joe Bento n6dgy at kirtland.com
Sun Nov 13 14:38:48 EST 2005


I had a good friend send me som Vero / Stripboard from the UK.  Fabulous
stuff!  

For those that don't know, Vero board or Stripboard is perfboard with a
copper strip the entire length of each horizontal row of holes.  Cuts are
made to break the horizontal strip with a special cutting tool, or a drill
bit just twisted a couple times by hand.  Cuts would be made in the case of
an IC - take for example a 26-pin dip package.  You would need to cut 8
traces by twisting the drill bit between the rows where the IC is to be
inserted.  8 traces, that is unless two lined up pins from the adjacent row
connect - 1 and 16, for example.

The board is easy to use, but does take some thought in regards to layout to
minimize the need to cut traces or use jumpers.  Meccano, the same makers of
the Erector Set, offers this handy layout sheet for working with Stripboard.
See http://www.eleinmec.com/article.asp?11 and choose your format - word,
pdf, etc. for viewing.

If I order board myself, I get it from Rapid Electronics in the UK at
http://www.rapidelectronics.co.uk/rkmain.asp?PAGEID=80008.  

I can't understand why this stuff never became popular in the US.  Then
again, I can't understand why the majority of good electronics and computer
magazines are no longer published in the USA either.

73,
de Joe, N6DGY

-----Original Message-----
From: amradio-bounces at mailman.qth.net
[mailto:amradio-bounces at mailman.qth.net] On Behalf Of bcarling at cfl.rr.com
Sent: Sunday, November 13, 2005 11:55 AM
To: Discussion of AM Radio
Subject: Re: [AMRadio] Dumber than a rock question . .

Barrie, you can buy push pins specially made to fit tightly into those perf
board holes and then solder your connections and parts directly to the
stakes/pins. It is a popular way of anchoring things to perf board.  I
prefer a metal chassis and terminal boards for larger tube stuff.

However, for BOARD type construction the BEST thing is  called VERO BOARD.
It is hard to find in the USA though.

On 13 Nov 2005 at 11:37, Barrie Smith wrote:

> Well, guys, I've built a heap of stuff over a many year period, but 
> have never used perfboard.
> 
> I'm in the process of building an in-shack controller for an antenna 
> matching device that is at the base of one of my towers.  This unit 
> has a 90 microhenry coil therein, with four latching vacuum relays 
> which will short out turns as needed for matching.
> 
> Since the latching vacuum relays have no auxilery contacts, I bought 
> four small perfboard latching relays which will be in the control box 
> in the shack.  These relays will actuate the vacuum relays outside and 
> also light a LED, so I will know how many turns are shorted on the outside
coil.
> 
> I bought some perfboard (for the first time), and took a look at it 
> last night.  The relays fit in the holes just fine, with a small 
> amount of pin sticking through the other side.
> 
> So, what the hell do I do with it?  Wrap some wire around the 
> protruding pins and solder it?  Put the wire in an adjacent hole and 
> run a solder trace?
> 
> Well, I told you it was dumb!
> 
> 73, Barrie, W7ALW
> 
> 
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