Re: Hand-held case/enclosure design using CAD tools

On Wed, 24 Jun 2009 09:41:03 -0600, Nicholas Kinar <n.kinar@xxxxxxxx>
wrote:



I'm creating a hand-held ground-based remote sensing system for
determining the physical properties of environmental materials. This
requires attaching transducers to the circuit board. The transducers
that I have been using in previous prototypes unfortunately require the
use of wires. Clips are a good idea. In my previous circuits, I simply
left the wires to slop around in the box. This was really not a good
idea because I soon found that after the circuit was transported,
vibrations would create a big tangled mess.

If the sensors are outside the case, on cables, I'd put connectors on
the cables, and matching PC-mount connectors on the PC board, located
so that they can be accessed from outside the case (protruding through
the front or rear panel.) There are screw terminal strips that could
be mounted on the PC board so that they could be accessed from outside
the case, for individual wire connections (but I prefer connectors -
once you get things connected correctly, you can disconnect and
reconnect the cables without worrying about the correct wire order.)


Sigh, I understand the truth in these words. However, because I am a
researcher working in the context of a university to do research and
also develop a product, I have a vested interest in also learning about
new things. Of course, if I was doing this for a company, then it would
make good sense to hire a mechanical engineer with some experience in
the field. Moreover, purchasing a few books may provide an enlightening
experience, and it will simply give me some interesting summer reading!

While it is good to learn new things, don't lose track of the actual
job you started on.

--
Peter Bennett, VE7CEI
peterbb4 (at) interchange.ubc.ca
GPS and NMEA info: http://vancouver-webpages.com/peter
Vancouver Power Squadron: http://vancouver.powersquadron.ca
.

Relevant Pages

  • Re: Mains conditioners and power cables
    ... >> could drive around this ' circuit ' all day, ... >> other because they're on seperate carriageways (wires). ... I don't dispute anything you say about reference points, ... B. There is a voltage on B with reference to A OR a voltage on A ...
    (uk.rec.audio)
  • Re: Guidelines to shrink the PCB size
    ... connections can be done with ordinary connectors. ... layers to adjust the components. ... Placing of circuit sections to maintain safety isolation ... different packages too. ...
    (comp.arch.embedded)
  • Brought DW to Pin-A-Go-Go, removing head
    ... I brought my Doctor Who game to Pin-A-Go-Go, ... The disadvantage is the time it takes to remove all those connectors ... Put straps around both of the big hoses of wires coming through ... from the playfield, at the area where the wires exit the hose, to help ...
    (rec.games.pinball)
  • Re: replacing older electrical outlets
    ... being a ground even though there's still a 2 prong outlet (I guess this ... the circuit then change the others with three prong ... No one who knows what they are talking about will tell you that what I'm about to suggest is required by code but I'm going to suggest that you use isolated ground receptacles for your replacement receptacles that will be supplied from the Ground Fault Circuit Interrupters. ... Be sure you dont chop up the wires ...
    (alt.home.repair)
  • Re: Question about how RCA wires & headphone mini-jacks "work".
    ... That's what it is, and conductor wire B is the outer shield of the cable, ... Ground means ANY point in the circuit which WE CHOOSE to ALWAYS connect one ... One thing to cling to is this: Audio cables are each 2 conductors. ... The second thing to cling to is this: AC doesn't require any more wires than ...
    (rec.audio.tech)
Quantcast